./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix015.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix015.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix015.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-76401ed-m [2024-06-20 15:56:37,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:56:37,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:56:37,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:56:37,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:56:37,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:56:37,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:56:37,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:56:37,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:56:37,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:56:37,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:56:37,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:56:37,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:56:37,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:56:37,375 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:56:37,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:56:37,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:56:37,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:56:37,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:56:37,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:56:37,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:56:37,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:56:37,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:56:37,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:56:37,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:56:37,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:56:37,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:56:37,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:56:37,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:56:37,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:56:37,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:56:37,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:56:37,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:56:37,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:56:37,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:56:37,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:56:37,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:56:37,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:56:37,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:56:37,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:56:37,382 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:56:37,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:56:37,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:56:37,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:56:37,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:56:37,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:56:37,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:56:37,610 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:56:37,610 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:56:37,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix015.opt.yml/witness.yml [2024-06-20 15:56:37,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:56:37,788 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:56:37,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-20 15:56:38,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:56:38,915 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:56:38,915 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-20 15:56:38,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155363a6b/f1985eb6cf324dff8dfaab90f1da8f55/FLAG654e07157 [2024-06-20 15:56:38,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155363a6b/f1985eb6cf324dff8dfaab90f1da8f55 [2024-06-20 15:56:38,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:56:38,944 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:56:38,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:56:38,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:56:38,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:56:38,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:56:37" (1/2) ... [2024-06-20 15:56:38,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c63e139 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:56:38, skipping insertion in model container [2024-06-20 15:56:38,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:56:37" (1/2) ... [2024-06-20 15:56:38,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72d4d136 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:56:38, skipping insertion in model container [2024-06-20 15:56:38,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:56:38" (2/2) ... [2024-06-20 15:56:38,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c63e139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:38, skipping insertion in model container [2024-06-20 15:56:38,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:56:38" (2/2) ... [2024-06-20 15:56:38,953 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:56:39,028 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:56:39,029 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:56:39,030 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:56:39,030 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:56:39,030 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:56:39,030 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-20 15:56:39,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:56:39,355 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:56:39,371 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:56:39,486 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:56:39,513 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:56:39,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39 WrapperNode [2024-06-20 15:56:39,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:56:39,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:56:39,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:56:39,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:56:39,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,568 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-20 15:56:39,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:56:39,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:56:39,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:56:39,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:56:39,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,591 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,604 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]. [2024-06-20 15:56:39,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:56:39,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:56:39,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:56:39,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:56:39,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (1/1) ... [2024-06-20 15:56:39,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:56:39,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:56:39,651 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) [2024-06-20 15:56:39,655 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 [2024-06-20 15:56:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 15:56:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:56:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 15:56:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 15:56:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 15:56:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 15:56:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-20 15:56:39,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-20 15:56:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:56:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 15:56:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:56:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:56:39,681 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:56:39,817 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:56:39,819 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:56:40,126 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:56:40,126 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:56:40,245 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:56:40,246 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 15:56:40,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:56:40 BoogieIcfgContainer [2024-06-20 15:56:40,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:56:40,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:56:40,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:56:40,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:56:40,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:56:37" (1/4) ... [2024-06-20 15:56:40,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0032a1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:56:40, skipping insertion in model container [2024-06-20 15:56:40,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:56:38" (2/4) ... [2024-06-20 15:56:40,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0032a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:56:40, skipping insertion in model container [2024-06-20 15:56:40,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:56:39" (3/4) ... [2024-06-20 15:56:40,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0032a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:56:40, skipping insertion in model container [2024-06-20 15:56:40,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:56:40" (4/4) ... [2024-06-20 15:56:40,254 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.opt.i [2024-06-20 15:56:40,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:56:40,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-20 15:56:40,268 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:56:40,317 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 15:56:40,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-20 15:56:40,372 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-20 15:56:40,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:56:40,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 15:56:40,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-20 15:56:40,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-20 15:56:40,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:56:40,412 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;@551e2f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:56:40,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-20 15:56:40,415 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:56:40,416 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 15:56:40,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:56:40,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:40,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:56:40,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 402627273, now seen corresponding path program 1 times [2024-06-20 15:56:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:40,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911373734] [2024-06-20 15:56:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:41,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911373734] [2024-06-20 15:56:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911373734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:41,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:56:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864791031] [2024-06-20 15:56:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:41,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:56:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:56:41,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:56:41,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-06-20 15:56:41,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:41,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:41,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-06-20 15:56:41,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:41,913 INFO L124 PetriNetUnfolderBase]: 1116/1782 cut-off events. [2024-06-20 15:56:41,913 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-20 15:56:41,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3533 conditions, 1782 events. 1116/1782 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9227 event pairs, 765 based on Foata normal form. 1/1708 useless extension candidates. Maximal degree in co-relation 3521. Up to 1676 conditions per place. [2024-06-20 15:56:41,928 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 31 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-20 15:56:41,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 173 flow [2024-06-20 15:56:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:56:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:56:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-20 15:56:41,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-06-20 15:56:41,939 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 83 transitions. [2024-06-20 15:56:41,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 173 flow [2024-06-20 15:56:41,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 15:56:41,945 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-20 15:56:41,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-20 15:56:41,949 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-20 15:56:41,949 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-20 15:56:41,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:41,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:41,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:56:41,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:41,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash 377774120, now seen corresponding path program 1 times [2024-06-20 15:56:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:41,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309616117] [2024-06-20 15:56:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:41,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:42,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:42,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309616117] [2024-06-20 15:56:42,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309616117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:42,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:42,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:56:42,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394140293] [2024-06-20 15:56:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:42,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:56:42,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:56:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:56:42,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-20 15:56:42,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:42,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:42,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-20 15:56:42,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:43,085 INFO L124 PetriNetUnfolderBase]: 1280/1968 cut-off events. [2024-06-20 15:56:43,085 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2024-06-20 15:56:43,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 1968 events. 1280/1968 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9889 event pairs, 750 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 4477. Up to 1897 conditions per place. [2024-06-20 15:56:43,093 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-20 15:56:43,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 242 flow [2024-06-20 15:56:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:56:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:56:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-06-20 15:56:43,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-06-20 15:56:43,094 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 105 transitions. [2024-06-20 15:56:43,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 242 flow [2024-06-20 15:56:43,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:56:43,096 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-20 15:56:43,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-20 15:56:43,097 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-20 15:56:43,097 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-20 15:56:43,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:43,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:43,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:43,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:56:43,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:43,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1173903438, now seen corresponding path program 1 times [2024-06-20 15:56:43,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:43,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122841398] [2024-06-20 15:56:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:43,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:43,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122841398] [2024-06-20 15:56:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122841398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:43,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:56:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031141834] [2024-06-20 15:56:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:56:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:56:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:56:44,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-20 15:56:44,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:44,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:44,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-20 15:56:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:44,349 INFO L124 PetriNetUnfolderBase]: 1558/2371 cut-off events. [2024-06-20 15:56:44,349 INFO L125 PetriNetUnfolderBase]: For 1303/1303 co-relation queries the response was YES. [2024-06-20 15:56:44,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5987 conditions, 2371 events. 1558/2371 cut-off events. For 1303/1303 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11778 event pairs, 839 based on Foata normal form. 3/2362 useless extension candidates. Maximal degree in co-relation 5973. Up to 2286 conditions per place. [2024-06-20 15:56:44,359 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 47 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-20 15:56:44,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 322 flow [2024-06-20 15:56:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:56:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:56:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-20 15:56:44,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-06-20 15:56:44,365 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 5 states and 125 transitions. [2024-06-20 15:56:44,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 322 flow [2024-06-20 15:56:44,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 308 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-20 15:56:44,368 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 176 flow [2024-06-20 15:56:44,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-20 15:56:44,369 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-06-20 15:56:44,370 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 176 flow [2024-06-20 15:56:44,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:44,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:44,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:56:44,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:44,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:44,371 INFO L85 PathProgramCache]: Analyzing trace with hash -950747879, now seen corresponding path program 1 times [2024-06-20 15:56:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:44,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264403871] [2024-06-20 15:56:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:44,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:45,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:45,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264403871] [2024-06-20 15:56:45,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264403871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:45,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:45,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:56:45,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031121073] [2024-06-20 15:56:45,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:56:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:56:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:56:45,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-20 15:56:45,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:45,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:45,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-20 15:56:45,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:45,734 INFO L124 PetriNetUnfolderBase]: 1552/2375 cut-off events. [2024-06-20 15:56:45,734 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-06-20 15:56:45,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6561 conditions, 2375 events. 1552/2375 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11924 event pairs, 697 based on Foata normal form. 3/2373 useless extension candidates. Maximal degree in co-relation 6546. Up to 2262 conditions per place. [2024-06-20 15:56:45,745 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-20 15:56:45,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 400 flow [2024-06-20 15:56:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:56:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:56:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-20 15:56:45,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-06-20 15:56:45,747 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 176 flow. Second operand 6 states and 148 transitions. [2024-06-20 15:56:45,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 400 flow [2024-06-20 15:56:45,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 376 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 15:56:45,751 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 212 flow [2024-06-20 15:56:45,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-20 15:56:45,753 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-06-20 15:56:45,753 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 212 flow [2024-06-20 15:56:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:45,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:45,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:56:45,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:45,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1246508503, now seen corresponding path program 1 times [2024-06-20 15:56:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563987322] [2024-06-20 15:56:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:46,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563987322] [2024-06-20 15:56:46,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563987322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:46,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:56:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826376369] [2024-06-20 15:56:46,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:46,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:56:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:46,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:56:46,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:56:46,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:56:46,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:46,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:46,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:56:46,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:46,819 INFO L124 PetriNetUnfolderBase]: 1495/2422 cut-off events. [2024-06-20 15:56:46,819 INFO L125 PetriNetUnfolderBase]: For 3673/3673 co-relation queries the response was YES. [2024-06-20 15:56:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 2422 events. 1495/2422 cut-off events. For 3673/3673 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12725 event pairs, 734 based on Foata normal form. 4/2418 useless extension candidates. Maximal degree in co-relation 7021. Up to 2212 conditions per place. [2024-06-20 15:56:46,831 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 45 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-20 15:56:46,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 364 flow [2024-06-20 15:56:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:56:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:56:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-20 15:56:46,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-06-20 15:56:46,832 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 212 flow. Second operand 5 states and 107 transitions. [2024-06-20 15:56:46,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 364 flow [2024-06-20 15:56:46,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 330 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:46,835 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 224 flow [2024-06-20 15:56:46,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-20 15:56:46,835 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2024-06-20 15:56:46,836 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 224 flow [2024-06-20 15:56:46,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:46,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:46,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 15:56:46,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:46,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 649599816, now seen corresponding path program 1 times [2024-06-20 15:56:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:46,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902399842] [2024-06-20 15:56:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:47,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:47,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902399842] [2024-06-20 15:56:47,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902399842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:47,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:47,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:56:47,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636204742] [2024-06-20 15:56:47,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:56:47,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:56:47,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:56:47,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:56:47,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:47,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:47,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:56:47,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:48,230 INFO L124 PetriNetUnfolderBase]: 1746/2688 cut-off events. [2024-06-20 15:56:48,230 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2024-06-20 15:56:48,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8554 conditions, 2688 events. 1746/2688 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13395 event pairs, 828 based on Foata normal form. 4/2690 useless extension candidates. Maximal degree in co-relation 8535. Up to 2516 conditions per place. [2024-06-20 15:56:48,242 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 55 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2024-06-20 15:56:48,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 482 flow [2024-06-20 15:56:48,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:56:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:56:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-20 15:56:48,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2024-06-20 15:56:48,244 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 224 flow. Second operand 6 states and 130 transitions. [2024-06-20 15:56:48,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 482 flow [2024-06-20 15:56:48,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 460 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-20 15:56:48,246 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 288 flow [2024-06-20 15:56:48,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-06-20 15:56:48,247 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-06-20 15:56:48,247 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 288 flow [2024-06-20 15:56:48,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:48,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:48,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:48,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 15:56:48,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:48,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 657910296, now seen corresponding path program 2 times [2024-06-20 15:56:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:48,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565557757] [2024-06-20 15:56:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:48,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:48,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565557757] [2024-06-20 15:56:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565557757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:48,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:48,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:56:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003523494] [2024-06-20 15:56:48,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:48,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:56:48,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:48,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:56:48,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:56:48,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:56:48,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:48,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:48,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:56:48,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:49,544 INFO L124 PetriNetUnfolderBase]: 1736/2676 cut-off events. [2024-06-20 15:56:49,544 INFO L125 PetriNetUnfolderBase]: For 8105/8115 co-relation queries the response was YES. [2024-06-20 15:56:49,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9144 conditions, 2676 events. 1736/2676 cut-off events. For 8105/8115 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13333 event pairs, 827 based on Foata normal form. 14/2689 useless extension candidates. Maximal degree in co-relation 9124. Up to 2508 conditions per place. [2024-06-20 15:56:49,557 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 49 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-20 15:56:49,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 460 flow [2024-06-20 15:56:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:56:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:56:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-20 15:56:49,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-20 15:56:49,558 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 288 flow. Second operand 6 states and 124 transitions. [2024-06-20 15:56:49,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 460 flow [2024-06-20 15:56:49,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 428 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-20 15:56:49,564 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 296 flow [2024-06-20 15:56:49,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-20 15:56:49,564 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-06-20 15:56:49,564 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 296 flow [2024-06-20 15:56:49,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:49,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:49,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:49,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 15:56:49,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:49,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:49,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1432569102, now seen corresponding path program 1 times [2024-06-20 15:56:49,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:49,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143142152] [2024-06-20 15:56:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:49,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143142152] [2024-06-20 15:56:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143142152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:50,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003808029] [2024-06-20 15:56:50,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:50,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:50,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:56:50,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:50,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:50,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:56:50,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:51,269 INFO L124 PetriNetUnfolderBase]: 1823/2768 cut-off events. [2024-06-20 15:56:51,269 INFO L125 PetriNetUnfolderBase]: For 9784/9784 co-relation queries the response was YES. [2024-06-20 15:56:51,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 2768 events. 1823/2768 cut-off events. For 9784/9784 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13605 event pairs, 592 based on Foata normal form. 6/2773 useless extension candidates. Maximal degree in co-relation 9667. Up to 2610 conditions per place. [2024-06-20 15:56:51,288 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 75 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2024-06-20 15:56:51,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 608 flow [2024-06-20 15:56:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:56:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:56:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-20 15:56:51,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319767441860465 [2024-06-20 15:56:51,290 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 296 flow. Second operand 8 states and 183 transitions. [2024-06-20 15:56:51,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 608 flow [2024-06-20 15:56:51,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 568 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-20 15:56:51,299 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 333 flow [2024-06-20 15:56:51,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-20 15:56:51,300 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-06-20 15:56:51,300 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 333 flow [2024-06-20 15:56:51,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:51,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:51,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:51,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 15:56:51,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:51,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash 212596114, now seen corresponding path program 1 times [2024-06-20 15:56:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:51,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335943130] [2024-06-20 15:56:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:51,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335943130] [2024-06-20 15:56:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335943130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:52,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:52,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977466498] [2024-06-20 15:56:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:52,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:56:52,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:52,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:52,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:56:52,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:52,837 INFO L124 PetriNetUnfolderBase]: 1845/2795 cut-off events. [2024-06-20 15:56:52,837 INFO L125 PetriNetUnfolderBase]: For 12597/12597 co-relation queries the response was YES. [2024-06-20 15:56:52,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10392 conditions, 2795 events. 1845/2795 cut-off events. For 12597/12597 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13654 event pairs, 635 based on Foata normal form. 4/2797 useless extension candidates. Maximal degree in co-relation 10369. Up to 2586 conditions per place. [2024-06-20 15:56:52,849 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 67 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-20 15:56:52,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 675 flow [2024-06-20 15:56:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:56:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:56:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-20 15:56:52,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4850498338870432 [2024-06-20 15:56:52,851 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 333 flow. Second operand 7 states and 146 transitions. [2024-06-20 15:56:52,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 675 flow [2024-06-20 15:56:52,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 624 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-20 15:56:52,857 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 396 flow [2024-06-20 15:56:52,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-20 15:56:52,857 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-06-20 15:56:52,858 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 396 flow [2024-06-20 15:56:52,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:52,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:52,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:52,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 15:56:52,858 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:52,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash 212775604, now seen corresponding path program 2 times [2024-06-20 15:56:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838874739] [2024-06-20 15:56:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:53,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:53,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838874739] [2024-06-20 15:56:53,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838874739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:53,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:53,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:53,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661111867] [2024-06-20 15:56:53,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:53,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:53,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:53,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:56:53,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:53,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:53,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:56:53,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:54,354 INFO L124 PetriNetUnfolderBase]: 1867/2827 cut-off events. [2024-06-20 15:56:54,354 INFO L125 PetriNetUnfolderBase]: For 15849/15849 co-relation queries the response was YES. [2024-06-20 15:56:54,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11131 conditions, 2827 events. 1867/2827 cut-off events. For 15849/15849 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13781 event pairs, 635 based on Foata normal form. 4/2829 useless extension candidates. Maximal degree in co-relation 11106. Up to 2605 conditions per place. [2024-06-20 15:56:54,368 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 65 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-20 15:56:54,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 714 flow [2024-06-20 15:56:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:56:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:56:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-20 15:56:54,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47840531561461797 [2024-06-20 15:56:54,369 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 396 flow. Second operand 7 states and 144 transitions. [2024-06-20 15:56:54,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 714 flow [2024-06-20 15:56:54,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 668 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-20 15:56:54,378 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 442 flow [2024-06-20 15:56:54,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-20 15:56:54,379 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-06-20 15:56:54,379 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 442 flow [2024-06-20 15:56:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:54,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:54,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:54,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 15:56:54,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:54,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1079615854, now seen corresponding path program 3 times [2024-06-20 15:56:54,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696037134] [2024-06-20 15:56:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:54,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:55,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696037134] [2024-06-20 15:56:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696037134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:55,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:55,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053054968] [2024-06-20 15:56:55,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:55,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:55,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:55,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:56:55,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:55,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:55,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:56:55,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:55,852 INFO L124 PetriNetUnfolderBase]: 1857/2816 cut-off events. [2024-06-20 15:56:55,852 INFO L125 PetriNetUnfolderBase]: For 18378/18388 co-relation queries the response was YES. [2024-06-20 15:56:55,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11367 conditions, 2816 events. 1857/2816 cut-off events. For 18378/18388 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13802 event pairs, 646 based on Foata normal form. 11/2826 useless extension candidates. Maximal degree in co-relation 11340. Up to 2597 conditions per place. [2024-06-20 15:56:55,866 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 59 selfloop transitions, 26 changer transitions 0/90 dead transitions. [2024-06-20 15:56:55,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 666 flow [2024-06-20 15:56:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:56:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:56:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-20 15:56:55,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-20 15:56:55,867 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 442 flow. Second operand 7 states and 138 transitions. [2024-06-20 15:56:55,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 666 flow [2024-06-20 15:56:55,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 602 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:55,880 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 438 flow [2024-06-20 15:56:55,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-20 15:56:55,881 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-06-20 15:56:55,881 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 438 flow [2024-06-20 15:56:55,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:55,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:55,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:55,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 15:56:55,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:55,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2132121964, now seen corresponding path program 1 times [2024-06-20 15:56:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819934155] [2024-06-20 15:56:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:56,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:56,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819934155] [2024-06-20 15:56:56,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819934155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:56,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:56,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:56:56,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262994561] [2024-06-20 15:56:56,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:56,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:56:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:56:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:56:56,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:56:56,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:56,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:56,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:56:56,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:57,521 INFO L124 PetriNetUnfolderBase]: 1532/2454 cut-off events. [2024-06-20 15:56:57,521 INFO L125 PetriNetUnfolderBase]: For 17391/17391 co-relation queries the response was YES. [2024-06-20 15:56:57,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9863 conditions, 2454 events. 1532/2454 cut-off events. For 17391/17391 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12779 event pairs, 547 based on Foata normal form. 4/2442 useless extension candidates. Maximal degree in co-relation 9835. Up to 2219 conditions per place. [2024-06-20 15:56:57,533 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 69 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-20 15:56:57,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 695 flow [2024-06-20 15:56:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:56:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:56:57,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-20 15:56:57,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-20 15:56:57,535 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 438 flow. Second operand 7 states and 143 transitions. [2024-06-20 15:56:57,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 695 flow [2024-06-20 15:56:57,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 614 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 15:56:57,546 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 443 flow [2024-06-20 15:56:57,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-06-20 15:56:57,546 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-06-20 15:56:57,547 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 443 flow [2024-06-20 15:56:57,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:57,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:57,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 15:56:57,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:57,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash -683826412, now seen corresponding path program 1 times [2024-06-20 15:56:57,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:57,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739518210] [2024-06-20 15:56:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:58,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:58,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739518210] [2024-06-20 15:56:58,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739518210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:58,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:58,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:56:58,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559539070] [2024-06-20 15:56:58,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:58,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:56:58,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:58,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:56:58,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:56:58,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-20 15:56:58,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:58,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:58,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-20 15:56:58,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:56:58,653 INFO L124 PetriNetUnfolderBase]: 1428/2352 cut-off events. [2024-06-20 15:56:58,653 INFO L125 PetriNetUnfolderBase]: For 19904/19904 co-relation queries the response was YES. [2024-06-20 15:56:58,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 2352 events. 1428/2352 cut-off events. For 19904/19904 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12639 event pairs, 556 based on Foata normal form. 1/2352 useless extension candidates. Maximal degree in co-relation 9904. Up to 2130 conditions per place. [2024-06-20 15:56:58,665 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 63 selfloop transitions, 8 changer transitions 0/84 dead transitions. [2024-06-20 15:56:58,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 627 flow [2024-06-20 15:56:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:56:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:56:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-20 15:56:58,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-20 15:56:58,666 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 443 flow. Second operand 5 states and 105 transitions. [2024-06-20 15:56:58,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 627 flow [2024-06-20 15:56:58,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 586 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-20 15:56:58,678 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 452 flow [2024-06-20 15:56:58,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-06-20 15:56:58,678 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-06-20 15:56:58,678 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 452 flow [2024-06-20 15:56:58,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:58,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:56:58,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:56:58,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 15:56:58,679 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:56:58,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:56:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1648445975, now seen corresponding path program 1 times [2024-06-20 15:56:58,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:56:58,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933541705] [2024-06-20 15:56:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:56:58,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:56:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:56:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:56:59,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:56:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933541705] [2024-06-20 15:56:59,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933541705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:56:59,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:56:59,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:56:59,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507511816] [2024-06-20 15:56:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:56:59,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:56:59,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:56:59,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:56:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:56:59,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:56:59,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 452 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:56:59,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:56:59,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:56:59,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:00,365 INFO L124 PetriNetUnfolderBase]: 1868/2825 cut-off events. [2024-06-20 15:57:00,366 INFO L125 PetriNetUnfolderBase]: For 27082/27082 co-relation queries the response was YES. [2024-06-20 15:57:00,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12560 conditions, 2825 events. 1868/2825 cut-off events. For 27082/27082 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13802 event pairs, 588 based on Foata normal form. 4/2827 useless extension candidates. Maximal degree in co-relation 12529. Up to 2531 conditions per place. [2024-06-20 15:57:00,380 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 78 selfloop transitions, 37 changer transitions 0/120 dead transitions. [2024-06-20 15:57:00,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 898 flow [2024-06-20 15:57:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-20 15:57:00,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-20 15:57:00,382 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 452 flow. Second operand 8 states and 168 transitions. [2024-06-20 15:57:00,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 898 flow [2024-06-20 15:57:00,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 870 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-20 15:57:00,396 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 576 flow [2024-06-20 15:57:00,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-06-20 15:57:00,397 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2024-06-20 15:57:00,397 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 576 flow [2024-06-20 15:57:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:00,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:00,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:00,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 15:57:00,398 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:00,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1648296245, now seen corresponding path program 2 times [2024-06-20 15:57:00,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:00,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067641868] [2024-06-20 15:57:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:00,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:01,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:01,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067641868] [2024-06-20 15:57:01,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067641868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:01,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:01,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696586435] [2024-06-20 15:57:01,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:01,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:01,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:01,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:01,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:01,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:01,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:02,025 INFO L124 PetriNetUnfolderBase]: 1890/2857 cut-off events. [2024-06-20 15:57:02,026 INFO L125 PetriNetUnfolderBase]: For 31661/31661 co-relation queries the response was YES. [2024-06-20 15:57:02,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13457 conditions, 2857 events. 1890/2857 cut-off events. For 31661/31661 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13922 event pairs, 588 based on Foata normal form. 4/2859 useless extension candidates. Maximal degree in co-relation 13425. Up to 2550 conditions per place. [2024-06-20 15:57:02,039 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 77 selfloop transitions, 38 changer transitions 0/120 dead transitions. [2024-06-20 15:57:02,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 120 transitions, 992 flow [2024-06-20 15:57:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-20 15:57:02,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2024-06-20 15:57:02,040 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 576 flow. Second operand 8 states and 166 transitions. [2024-06-20 15:57:02,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 120 transitions, 992 flow [2024-06-20 15:57:02,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 120 transitions, 913 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:02,056 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 619 flow [2024-06-20 15:57:02,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=619, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-06-20 15:57:02,057 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2024-06-20 15:57:02,057 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 619 flow [2024-06-20 15:57:02,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:02,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:02,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:02,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 15:57:02,058 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:02,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1642732055, now seen corresponding path program 3 times [2024-06-20 15:57:02,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:02,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749018815] [2024-06-20 15:57:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:02,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749018815] [2024-06-20 15:57:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749018815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:02,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:02,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:02,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77433209] [2024-06-20 15:57:02,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:02,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:02,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:02,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 619 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:02,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:02,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:02,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:03,728 INFO L124 PetriNetUnfolderBase]: 1912/2889 cut-off events. [2024-06-20 15:57:03,729 INFO L125 PetriNetUnfolderBase]: For 35265/35265 co-relation queries the response was YES. [2024-06-20 15:57:03,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 2889 events. 1912/2889 cut-off events. For 35265/35265 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14071 event pairs, 593 based on Foata normal form. 4/2891 useless extension candidates. Maximal degree in co-relation 13793. Up to 2569 conditions per place. [2024-06-20 15:57:03,742 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 75 selfloop transitions, 40 changer transitions 0/120 dead transitions. [2024-06-20 15:57:03,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 1029 flow [2024-06-20 15:57:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-20 15:57:03,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-20 15:57:03,744 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 619 flow. Second operand 8 states and 164 transitions. [2024-06-20 15:57:03,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 1029 flow [2024-06-20 15:57:03,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 951 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:03,768 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 665 flow [2024-06-20 15:57:03,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-06-20 15:57:03,768 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2024-06-20 15:57:03,769 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 665 flow [2024-06-20 15:57:03,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:03,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:03,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:03,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 15:57:03,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:03,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 891648375, now seen corresponding path program 4 times [2024-06-20 15:57:03,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699031544] [2024-06-20 15:57:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:04,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:04,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699031544] [2024-06-20 15:57:04,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699031544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:04,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:04,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638772386] [2024-06-20 15:57:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:04,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:04,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:04,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 665 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:04,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:04,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:04,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:05,407 INFO L124 PetriNetUnfolderBase]: 1902/2879 cut-off events. [2024-06-20 15:57:05,407 INFO L125 PetriNetUnfolderBase]: For 38808/38814 co-relation queries the response was YES. [2024-06-20 15:57:05,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13954 conditions, 2879 events. 1902/2879 cut-off events. For 38808/38814 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14056 event pairs, 616 based on Foata normal form. 7/2885 useless extension candidates. Maximal degree in co-relation 13919. Up to 2561 conditions per place. [2024-06-20 15:57:05,421 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 70 selfloop transitions, 40 changer transitions 0/115 dead transitions. [2024-06-20 15:57:05,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 959 flow [2024-06-20 15:57:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-20 15:57:05,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-20 15:57:05,422 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 665 flow. Second operand 8 states and 158 transitions. [2024-06-20 15:57:05,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 959 flow [2024-06-20 15:57:05,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 115 transitions, 868 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:05,447 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 662 flow [2024-06-20 15:57:05,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=662, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-06-20 15:57:05,447 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2024-06-20 15:57:05,447 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 662 flow [2024-06-20 15:57:05,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:05,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:05,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:05,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 15:57:05,448 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:05,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash 232426522, now seen corresponding path program 1 times [2024-06-20 15:57:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:05,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029332730] [2024-06-20 15:57:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:05,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029332730] [2024-06-20 15:57:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029332730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:57:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272990005] [2024-06-20 15:57:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:57:06,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:57:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:57:06,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-20 15:57:06,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 662 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:06,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:06,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-20 15:57:06,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:06,854 INFO L124 PetriNetUnfolderBase]: 1458/2403 cut-off events. [2024-06-20 15:57:06,854 INFO L125 PetriNetUnfolderBase]: For 34777/34777 co-relation queries the response was YES. [2024-06-20 15:57:06,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11717 conditions, 2403 events. 1458/2403 cut-off events. For 34777/34777 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12884 event pairs, 527 based on Foata normal form. 2/2402 useless extension candidates. Maximal degree in co-relation 11681. Up to 2133 conditions per place. [2024-06-20 15:57:06,868 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 73 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2024-06-20 15:57:06,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 880 flow [2024-06-20 15:57:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:57:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:57:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-20 15:57:06,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-20 15:57:06,869 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 662 flow. Second operand 6 states and 123 transitions. [2024-06-20 15:57:06,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 880 flow [2024-06-20 15:57:06,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 745 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:57:06,888 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 587 flow [2024-06-20 15:57:06,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=587, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-06-20 15:57:06,888 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 42 predicate places. [2024-06-20 15:57:06,889 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 587 flow [2024-06-20 15:57:06,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:06,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:06,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:06,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 15:57:06,889 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:06,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:06,890 INFO L85 PathProgramCache]: Analyzing trace with hash 442247839, now seen corresponding path program 1 times [2024-06-20 15:57:06,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519724610] [2024-06-20 15:57:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:07,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519724610] [2024-06-20 15:57:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519724610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199699402] [2024-06-20 15:57:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:07,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:07,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:07,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:07,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 587 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:07,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:07,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:07,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:08,738 INFO L124 PetriNetUnfolderBase]: 1915/2903 cut-off events. [2024-06-20 15:57:08,738 INFO L125 PetriNetUnfolderBase]: For 45274/45274 co-relation queries the response was YES. [2024-06-20 15:57:08,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14482 conditions, 2903 events. 1915/2903 cut-off events. For 45274/45274 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14168 event pairs, 627 based on Foata normal form. 4/2906 useless extension candidates. Maximal degree in co-relation 14446. Up to 2758 conditions per place. [2024-06-20 15:57:08,753 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 109 selfloop transitions, 20 changer transitions 0/134 dead transitions. [2024-06-20 15:57:08,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 985 flow [2024-06-20 15:57:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-20 15:57:08,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-20 15:57:08,754 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 587 flow. Second operand 9 states and 178 transitions. [2024-06-20 15:57:08,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 985 flow [2024-06-20 15:57:08,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 947 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:08,775 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 639 flow [2024-06-20 15:57:08,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-06-20 15:57:08,775 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-06-20 15:57:08,775 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 639 flow [2024-06-20 15:57:08,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:08,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:08,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 15:57:08,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:08,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1858158861, now seen corresponding path program 2 times [2024-06-20 15:57:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:08,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388272103] [2024-06-20 15:57:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:09,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:09,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388272103] [2024-06-20 15:57:09,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388272103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:09,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:09,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412601890] [2024-06-20 15:57:09,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:09,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:09,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:09,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:09,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:09,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:09,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:09,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:09,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:10,638 INFO L124 PetriNetUnfolderBase]: 1937/2943 cut-off events. [2024-06-20 15:57:10,639 INFO L125 PetriNetUnfolderBase]: For 50361/50361 co-relation queries the response was YES. [2024-06-20 15:57:10,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 2943 events. 1937/2943 cut-off events. For 50361/50361 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14504 event pairs, 543 based on Foata normal form. 4/2945 useless extension candidates. Maximal degree in co-relation 15197. Up to 2508 conditions per place. [2024-06-20 15:57:10,653 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 87 selfloop transitions, 51 changer transitions 0/143 dead transitions. [2024-06-20 15:57:10,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 143 transitions, 1187 flow [2024-06-20 15:57:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-20 15:57:10,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48578811369509045 [2024-06-20 15:57:10,654 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 639 flow. Second operand 9 states and 188 transitions. [2024-06-20 15:57:10,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 143 transitions, 1187 flow [2024-06-20 15:57:10,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 143 transitions, 1121 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 15:57:10,674 INFO L231 Difference]: Finished difference. Result has 93 places, 100 transitions, 773 flow [2024-06-20 15:57:10,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=773, PETRI_PLACES=93, PETRI_TRANSITIONS=100} [2024-06-20 15:57:10,675 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-06-20 15:57:10,675 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 100 transitions, 773 flow [2024-06-20 15:57:10,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:10,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:10,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:10,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 15:57:10,675 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:10,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:10,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1853517231, now seen corresponding path program 3 times [2024-06-20 15:57:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:10,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840043324] [2024-06-20 15:57:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:11,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:11,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840043324] [2024-06-20 15:57:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840043324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:11,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:11,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928550940] [2024-06-20 15:57:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:11,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:11,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:11,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 100 transitions, 773 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:11,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:11,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:11,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:12,531 INFO L124 PetriNetUnfolderBase]: 1959/2985 cut-off events. [2024-06-20 15:57:12,531 INFO L125 PetriNetUnfolderBase]: For 56995/56995 co-relation queries the response was YES. [2024-06-20 15:57:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16097 conditions, 2985 events. 1959/2985 cut-off events. For 56995/56995 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14776 event pairs, 548 based on Foata normal form. 4/2987 useless extension candidates. Maximal degree in co-relation 16059. Up to 2527 conditions per place. [2024-06-20 15:57:12,548 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 86 selfloop transitions, 52 changer transitions 0/143 dead transitions. [2024-06-20 15:57:12,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 143 transitions, 1281 flow [2024-06-20 15:57:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-20 15:57:12,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-20 15:57:12,550 INFO L175 Difference]: Start difference. First operand has 93 places, 100 transitions, 773 flow. Second operand 9 states and 186 transitions. [2024-06-20 15:57:12,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 143 transitions, 1281 flow [2024-06-20 15:57:12,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 1186 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:12,576 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 838 flow [2024-06-20 15:57:12,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2024-06-20 15:57:12,576 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2024-06-20 15:57:12,577 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 838 flow [2024-06-20 15:57:12,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:12,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:12,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:12,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 15:57:12,577 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:12,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1680781077, now seen corresponding path program 1 times [2024-06-20 15:57:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:12,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824551567] [2024-06-20 15:57:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:12,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:13,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824551567] [2024-06-20 15:57:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824551567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070916449] [2024-06-20 15:57:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:13,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:13,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:13,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:57:13,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 838 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:13,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:13,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:57:13,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:14,238 INFO L124 PetriNetUnfolderBase]: 1859/2890 cut-off events. [2024-06-20 15:57:14,238 INFO L125 PetriNetUnfolderBase]: For 61879/61879 co-relation queries the response was YES. [2024-06-20 15:57:14,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16062 conditions, 2890 events. 1859/2890 cut-off events. For 61879/61879 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14732 event pairs, 603 based on Foata normal form. 4/2885 useless extension candidates. Maximal degree in co-relation 16022. Up to 2647 conditions per place. [2024-06-20 15:57:14,254 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 103 selfloop transitions, 23 changer transitions 0/136 dead transitions. [2024-06-20 15:57:14,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 1217 flow [2024-06-20 15:57:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-20 15:57:14,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-20 15:57:14,256 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 838 flow. Second operand 8 states and 162 transitions. [2024-06-20 15:57:14,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 1217 flow [2024-06-20 15:57:14,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 136 transitions, 1107 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:14,289 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 846 flow [2024-06-20 15:57:14,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2024-06-20 15:57:14,289 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2024-06-20 15:57:14,290 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 846 flow [2024-06-20 15:57:14,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:14,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:14,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 15:57:14,290 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:14,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1681027341, now seen corresponding path program 4 times [2024-06-20 15:57:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:14,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404476134] [2024-06-20 15:57:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:14,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:15,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:15,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404476134] [2024-06-20 15:57:15,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404476134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:15,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:15,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363899485] [2024-06-20 15:57:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:15,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:15,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:15,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:15,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:15,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 846 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:15,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:15,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:15,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:16,103 INFO L124 PetriNetUnfolderBase]: 1998/3059 cut-off events. [2024-06-20 15:57:16,103 INFO L125 PetriNetUnfolderBase]: For 67734/67734 co-relation queries the response was YES. [2024-06-20 15:57:16,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17172 conditions, 3059 events. 1998/3059 cut-off events. For 67734/67734 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15264 event pairs, 556 based on Foata normal form. 4/3061 useless extension candidates. Maximal degree in co-relation 17130. Up to 2573 conditions per place. [2024-06-20 15:57:16,120 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 87 selfloop transitions, 56 changer transitions 0/148 dead transitions. [2024-06-20 15:57:16,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 148 transitions, 1369 flow [2024-06-20 15:57:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-20 15:57:16,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754521963824289 [2024-06-20 15:57:16,122 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 846 flow. Second operand 9 states and 184 transitions. [2024-06-20 15:57:16,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 148 transitions, 1369 flow [2024-06-20 15:57:16,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 148 transitions, 1298 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:16,151 INFO L231 Difference]: Finished difference. Result has 104 places, 111 transitions, 938 flow [2024-06-20 15:57:16,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=938, PETRI_PLACES=104, PETRI_TRANSITIONS=111} [2024-06-20 15:57:16,152 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-06-20 15:57:16,152 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 111 transitions, 938 flow [2024-06-20 15:57:16,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:16,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:16,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:16,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 15:57:16,153 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:16,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1398059147, now seen corresponding path program 1 times [2024-06-20 15:57:16,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:16,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746346699] [2024-06-20 15:57:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:16,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:16,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746346699] [2024-06-20 15:57:16,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746346699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:16,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:16,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:57:16,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205398199] [2024-06-20 15:57:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:16,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:57:16,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:57:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:57:16,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:16,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 111 transitions, 938 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:16,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:16,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:16,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:17,372 INFO L124 PetriNetUnfolderBase]: 1740/2763 cut-off events. [2024-06-20 15:57:17,372 INFO L125 PetriNetUnfolderBase]: For 73023/73033 co-relation queries the response was YES. [2024-06-20 15:57:17,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16458 conditions, 2763 events. 1740/2763 cut-off events. For 73023/73033 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14503 event pairs, 586 based on Foata normal form. 1/2738 useless extension candidates. Maximal degree in co-relation 16415. Up to 2549 conditions per place. [2024-06-20 15:57:17,387 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 102 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-06-20 15:57:17,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 129 transitions, 1230 flow [2024-06-20 15:57:17,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:57:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:57:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-20 15:57:17,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-20 15:57:17,388 INFO L175 Difference]: Start difference. First operand has 104 places, 111 transitions, 938 flow. Second operand 6 states and 123 transitions. [2024-06-20 15:57:17,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 129 transitions, 1230 flow [2024-06-20 15:57:17,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 1115 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:17,422 INFO L231 Difference]: Finished difference. Result has 104 places, 114 transitions, 885 flow [2024-06-20 15:57:17,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=885, PETRI_PLACES=104, PETRI_TRANSITIONS=114} [2024-06-20 15:57:17,422 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-06-20 15:57:17,422 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 114 transitions, 885 flow [2024-06-20 15:57:17,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:17,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:17,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:17,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 15:57:17,423 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:17,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:17,423 INFO L85 PathProgramCache]: Analyzing trace with hash -280238285, now seen corresponding path program 2 times [2024-06-20 15:57:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:17,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280023747] [2024-06-20 15:57:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280023747] [2024-06-20 15:57:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280023747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:18,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818609660] [2024-06-20 15:57:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:18,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:18,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:18,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:18,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:57:18,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 114 transitions, 885 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:18,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:18,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:57:18,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:19,142 INFO L124 PetriNetUnfolderBase]: 1914/2989 cut-off events. [2024-06-20 15:57:19,142 INFO L125 PetriNetUnfolderBase]: For 79150/79158 co-relation queries the response was YES. [2024-06-20 15:57:19,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17573 conditions, 2989 events. 1914/2989 cut-off events. For 79150/79158 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15417 event pairs, 608 based on Foata normal form. 12/3000 useless extension candidates. Maximal degree in co-relation 17529. Up to 2725 conditions per place. [2024-06-20 15:57:19,158 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 107 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-20 15:57:19,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 146 transitions, 1304 flow [2024-06-20 15:57:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-20 15:57:19,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-20 15:57:19,159 INFO L175 Difference]: Start difference. First operand has 104 places, 114 transitions, 885 flow. Second operand 8 states and 158 transitions. [2024-06-20 15:57:19,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 146 transitions, 1304 flow [2024-06-20 15:57:19,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 146 transitions, 1264 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:19,193 INFO L231 Difference]: Finished difference. Result has 109 places, 122 transitions, 1013 flow [2024-06-20 15:57:19,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1013, PETRI_PLACES=109, PETRI_TRANSITIONS=122} [2024-06-20 15:57:19,193 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2024-06-20 15:57:19,193 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 122 transitions, 1013 flow [2024-06-20 15:57:19,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:19,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:19,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:19,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 15:57:19,194 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:19,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:19,194 INFO L85 PathProgramCache]: Analyzing trace with hash -269762765, now seen corresponding path program 3 times [2024-06-20 15:57:19,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:19,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608245544] [2024-06-20 15:57:19,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:19,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:20,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:20,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608245544] [2024-06-20 15:57:20,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608245544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:20,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824764676] [2024-06-20 15:57:20,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:20,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:57:20,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 122 transitions, 1013 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:20,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:20,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:57:20,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:20,783 INFO L124 PetriNetUnfolderBase]: 1931/3016 cut-off events. [2024-06-20 15:57:20,783 INFO L125 PetriNetUnfolderBase]: For 86730/86738 co-relation queries the response was YES. [2024-06-20 15:57:20,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18404 conditions, 3016 events. 1931/3016 cut-off events. For 86730/86738 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15617 event pairs, 572 based on Foata normal form. 12/3020 useless extension candidates. Maximal degree in co-relation 18358. Up to 2669 conditions per place. [2024-06-20 15:57:20,804 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 107 selfloop transitions, 36 changer transitions 0/153 dead transitions. [2024-06-20 15:57:20,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 153 transitions, 1543 flow [2024-06-20 15:57:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-20 15:57:20,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-20 15:57:20,805 INFO L175 Difference]: Start difference. First operand has 109 places, 122 transitions, 1013 flow. Second operand 8 states and 161 transitions. [2024-06-20 15:57:20,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 153 transitions, 1543 flow [2024-06-20 15:57:20,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 153 transitions, 1476 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-20 15:57:20,840 INFO L231 Difference]: Finished difference. Result has 114 places, 126 transitions, 1113 flow [2024-06-20 15:57:20,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1113, PETRI_PLACES=114, PETRI_TRANSITIONS=126} [2024-06-20 15:57:20,841 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-06-20 15:57:20,841 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 126 transitions, 1113 flow [2024-06-20 15:57:20,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:20,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:20,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:20,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 15:57:20,841 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:20,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -565338155, now seen corresponding path program 4 times [2024-06-20 15:57:20,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:20,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744833898] [2024-06-20 15:57:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:21,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:21,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744833898] [2024-06-20 15:57:21,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744833898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:21,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:21,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:57:21,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514556651] [2024-06-20 15:57:21,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:21,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:57:21,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:57:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:57:21,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:57:21,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 126 transitions, 1113 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:21,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:21,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:57:21,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:22,557 INFO L124 PetriNetUnfolderBase]: 1923/3004 cut-off events. [2024-06-20 15:57:22,557 INFO L125 PetriNetUnfolderBase]: For 91403/91411 co-relation queries the response was YES. [2024-06-20 15:57:22,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18263 conditions, 3004 events. 1923/3004 cut-off events. For 91403/91411 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15514 event pairs, 606 based on Foata normal form. 12/3015 useless extension candidates. Maximal degree in co-relation 18216. Up to 2740 conditions per place. [2024-06-20 15:57:22,576 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 112 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-20 15:57:22,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 150 transitions, 1453 flow [2024-06-20 15:57:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:57:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:57:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-20 15:57:22,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622093023255814 [2024-06-20 15:57:22,579 INFO L175 Difference]: Start difference. First operand has 114 places, 126 transitions, 1113 flow. Second operand 8 states and 159 transitions. [2024-06-20 15:57:22,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 150 transitions, 1453 flow [2024-06-20 15:57:22,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 150 transitions, 1355 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:22,620 INFO L231 Difference]: Finished difference. Result has 118 places, 126 transitions, 1078 flow [2024-06-20 15:57:22,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1078, PETRI_PLACES=118, PETRI_TRANSITIONS=126} [2024-06-20 15:57:22,620 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 74 predicate places. [2024-06-20 15:57:22,620 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 126 transitions, 1078 flow [2024-06-20 15:57:22,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:22,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:22,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:22,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 15:57:22,621 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:22,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:22,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1945194227, now seen corresponding path program 5 times [2024-06-20 15:57:22,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:22,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128352567] [2024-06-20 15:57:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:23,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:23,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128352567] [2024-06-20 15:57:23,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128352567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:23,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:23,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042940931] [2024-06-20 15:57:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:23,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:23,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:23,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 1078 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:23,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:23,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:23,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:24,416 INFO L124 PetriNetUnfolderBase]: 2030/3123 cut-off events. [2024-06-20 15:57:24,416 INFO L125 PetriNetUnfolderBase]: For 95392/95396 co-relation queries the response was YES. [2024-06-20 15:57:24,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18764 conditions, 3123 events. 2030/3123 cut-off events. For 95392/95396 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15696 event pairs, 588 based on Foata normal form. 5/3126 useless extension candidates. Maximal degree in co-relation 18715. Up to 2621 conditions per place. [2024-06-20 15:57:24,436 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 92 selfloop transitions, 60 changer transitions 0/157 dead transitions. [2024-06-20 15:57:24,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 157 transitions, 1466 flow [2024-06-20 15:57:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-20 15:57:24,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-20 15:57:24,437 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 1078 flow. Second operand 9 states and 178 transitions. [2024-06-20 15:57:24,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 157 transitions, 1466 flow [2024-06-20 15:57:24,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 157 transitions, 1349 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-20 15:57:24,509 INFO L231 Difference]: Finished difference. Result has 118 places, 126 transitions, 1089 flow [2024-06-20 15:57:24,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1089, PETRI_PLACES=118, PETRI_TRANSITIONS=126} [2024-06-20 15:57:24,510 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 74 predicate places. [2024-06-20 15:57:24,510 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 126 transitions, 1089 flow [2024-06-20 15:57:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:24,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:24,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 15:57:24,511 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:24,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1384726667, now seen corresponding path program 2 times [2024-06-20 15:57:24,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:24,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748058861] [2024-06-20 15:57:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:25,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:25,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748058861] [2024-06-20 15:57:25,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748058861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:25,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:25,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:57:25,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734471426] [2024-06-20 15:57:25,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:25,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:57:25,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:25,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:57:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:57:25,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:25,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 1089 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:25,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:25,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:25,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:25,708 INFO L124 PetriNetUnfolderBase]: 1764/2800 cut-off events. [2024-06-20 15:57:25,709 INFO L125 PetriNetUnfolderBase]: For 100509/100532 co-relation queries the response was YES. [2024-06-20 15:57:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17852 conditions, 2800 events. 1764/2800 cut-off events. For 100509/100532 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14621 event pairs, 596 based on Foata normal form. 9/2776 useless extension candidates. Maximal degree in co-relation 17804. Up to 2583 conditions per place. [2024-06-20 15:57:25,729 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 106 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-20 15:57:25,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 138 transitions, 1393 flow [2024-06-20 15:57:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:57:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:57:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-20 15:57:25,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-20 15:57:25,731 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 1089 flow. Second operand 6 states and 119 transitions. [2024-06-20 15:57:25,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 138 transitions, 1393 flow [2024-06-20 15:57:25,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 138 transitions, 1194 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 15:57:25,778 INFO L231 Difference]: Finished difference. Result has 114 places, 129 transitions, 972 flow [2024-06-20 15:57:25,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=972, PETRI_PLACES=114, PETRI_TRANSITIONS=129} [2024-06-20 15:57:25,780 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-06-20 15:57:25,780 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 129 transitions, 972 flow [2024-06-20 15:57:25,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:25,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:25,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 15:57:25,780 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:25,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1996682947, now seen corresponding path program 1 times [2024-06-20 15:57:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:25,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731393537] [2024-06-20 15:57:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:26,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:26,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731393537] [2024-06-20 15:57:26,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731393537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:26,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:26,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:57:26,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473177821] [2024-06-20 15:57:26,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:26,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:57:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:26,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:57:26,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:57:26,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:26,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 129 transitions, 972 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:26,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:26,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:26,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:27,002 INFO L124 PetriNetUnfolderBase]: 1691/2745 cut-off events. [2024-06-20 15:57:27,002 INFO L125 PetriNetUnfolderBase]: For 89971/89973 co-relation queries the response was YES. [2024-06-20 15:57:27,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16611 conditions, 2745 events. 1691/2745 cut-off events. For 89971/89973 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 14711 event pairs, 509 based on Foata normal form. 4/2741 useless extension candidates. Maximal degree in co-relation 16562. Up to 2487 conditions per place. [2024-06-20 15:57:27,019 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 123 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2024-06-20 15:57:27,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 145 transitions, 1308 flow [2024-06-20 15:57:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:57:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:57:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-20 15:57:27,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-20 15:57:27,020 INFO L175 Difference]: Start difference. First operand has 114 places, 129 transitions, 972 flow. Second operand 6 states and 121 transitions. [2024-06-20 15:57:27,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 145 transitions, 1308 flow [2024-06-20 15:57:27,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 145 transitions, 1248 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:27,073 INFO L231 Difference]: Finished difference. Result has 116 places, 132 transitions, 980 flow [2024-06-20 15:57:27,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=980, PETRI_PLACES=116, PETRI_TRANSITIONS=132} [2024-06-20 15:57:27,074 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-06-20 15:57:27,074 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 132 transitions, 980 flow [2024-06-20 15:57:27,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:27,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:27,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:27,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 15:57:27,074 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:27,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash -27142861, now seen corresponding path program 2 times [2024-06-20 15:57:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959399908] [2024-06-20 15:57:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959399908] [2024-06-20 15:57:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959399908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:27,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:57:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104012459] [2024-06-20 15:57:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:27,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:57:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:57:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:57:27,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:27,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 132 transitions, 980 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:27,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:27,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:27,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:28,298 INFO L124 PetriNetUnfolderBase]: 1693/2751 cut-off events. [2024-06-20 15:57:28,298 INFO L125 PetriNetUnfolderBase]: For 95056/95060 co-relation queries the response was YES. [2024-06-20 15:57:28,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17045 conditions, 2751 events. 1693/2751 cut-off events. For 95056/95060 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 14732 event pairs, 518 based on Foata normal form. 6/2742 useless extension candidates. Maximal degree in co-relation 16995. Up to 2481 conditions per place. [2024-06-20 15:57:28,314 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 119 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2024-06-20 15:57:28,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 146 transitions, 1320 flow [2024-06-20 15:57:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:57:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:57:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-20 15:57:28,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-20 15:57:28,315 INFO L175 Difference]: Start difference. First operand has 116 places, 132 transitions, 980 flow. Second operand 6 states and 121 transitions. [2024-06-20 15:57:28,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 146 transitions, 1320 flow [2024-06-20 15:57:28,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 146 transitions, 1274 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:28,364 INFO L231 Difference]: Finished difference. Result has 118 places, 135 transitions, 1018 flow [2024-06-20 15:57:28,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1018, PETRI_PLACES=118, PETRI_TRANSITIONS=135} [2024-06-20 15:57:28,365 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 74 predicate places. [2024-06-20 15:57:28,365 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 135 transitions, 1018 flow [2024-06-20 15:57:28,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:28,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:28,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:28,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 15:57:28,366 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:28,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1624242289, now seen corresponding path program 1 times [2024-06-20 15:57:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:28,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356217992] [2024-06-20 15:57:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356217992] [2024-06-20 15:57:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356217992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156995258] [2024-06-20 15:57:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:29,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:29,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 135 transitions, 1018 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:29,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:29,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:29,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:30,352 INFO L124 PetriNetUnfolderBase]: 2056/3169 cut-off events. [2024-06-20 15:57:30,352 INFO L125 PetriNetUnfolderBase]: For 120346/120346 co-relation queries the response was YES. [2024-06-20 15:57:30,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20416 conditions, 3169 events. 2056/3169 cut-off events. For 120346/120346 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15987 event pairs, 584 based on Foata normal form. 4/3171 useless extension candidates. Maximal degree in co-relation 20365. Up to 2870 conditions per place. [2024-06-20 15:57:30,373 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 129 selfloop transitions, 41 changer transitions 0/175 dead transitions. [2024-06-20 15:57:30,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 175 transitions, 1504 flow [2024-06-20 15:57:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-20 15:57:30,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-20 15:57:30,374 INFO L175 Difference]: Start difference. First operand has 118 places, 135 transitions, 1018 flow. Second operand 9 states and 177 transitions. [2024-06-20 15:57:30,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 175 transitions, 1504 flow [2024-06-20 15:57:30,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 175 transitions, 1442 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:30,422 INFO L231 Difference]: Finished difference. Result has 124 places, 140 transitions, 1111 flow [2024-06-20 15:57:30,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1111, PETRI_PLACES=124, PETRI_TRANSITIONS=140} [2024-06-20 15:57:30,422 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 80 predicate places. [2024-06-20 15:57:30,422 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 140 transitions, 1111 flow [2024-06-20 15:57:30,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:30,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:30,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:30,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 15:57:30,423 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:30,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:30,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1516134099, now seen corresponding path program 1 times [2024-06-20 15:57:30,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:30,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228942954] [2024-06-20 15:57:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:30,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:31,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:31,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228942954] [2024-06-20 15:57:31,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228942954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:31,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:31,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545116870] [2024-06-20 15:57:31,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:31,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:31,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:57:31,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 140 transitions, 1111 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:31,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:31,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:57:31,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:31,772 INFO L124 PetriNetUnfolderBase]: 1915/3010 cut-off events. [2024-06-20 15:57:31,772 INFO L125 PetriNetUnfolderBase]: For 126526/126526 co-relation queries the response was YES. [2024-06-20 15:57:31,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20607 conditions, 3010 events. 1915/3010 cut-off events. For 126526/126526 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15624 event pairs, 572 based on Foata normal form. 1/3003 useless extension candidates. Maximal degree in co-relation 20554. Up to 2813 conditions per place. [2024-06-20 15:57:31,791 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 140 selfloop transitions, 14 changer transitions 0/165 dead transitions. [2024-06-20 15:57:31,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 165 transitions, 1515 flow [2024-06-20 15:57:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-20 15:57:31,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-20 15:57:31,792 INFO L175 Difference]: Start difference. First operand has 124 places, 140 transitions, 1111 flow. Second operand 7 states and 139 transitions. [2024-06-20 15:57:31,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 165 transitions, 1515 flow [2024-06-20 15:57:31,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 165 transitions, 1402 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:31,842 INFO L231 Difference]: Finished difference. Result has 125 places, 143 transitions, 1078 flow [2024-06-20 15:57:31,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1078, PETRI_PLACES=125, PETRI_TRANSITIONS=143} [2024-06-20 15:57:31,842 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 81 predicate places. [2024-06-20 15:57:31,842 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 143 transitions, 1078 flow [2024-06-20 15:57:31,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:31,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:31,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:31,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 15:57:31,843 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:31,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:31,843 INFO L85 PathProgramCache]: Analyzing trace with hash -572022995, now seen corresponding path program 2 times [2024-06-20 15:57:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:31,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014505396] [2024-06-20 15:57:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:31,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:32,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014505396] [2024-06-20 15:57:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014505396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:32,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:32,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054132286] [2024-06-20 15:57:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:32,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:32,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:32,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 143 transitions, 1078 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:32,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:32,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:32,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:33,730 INFO L124 PetriNetUnfolderBase]: 2089/3209 cut-off events. [2024-06-20 15:57:33,730 INFO L125 PetriNetUnfolderBase]: For 135816/135816 co-relation queries the response was YES. [2024-06-20 15:57:33,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21707 conditions, 3209 events. 2089/3209 cut-off events. For 135816/135816 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16210 event pairs, 580 based on Foata normal form. 4/3211 useless extension candidates. Maximal degree in co-relation 21653. Up to 2916 conditions per place. [2024-06-20 15:57:33,753 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 135 selfloop transitions, 41 changer transitions 0/181 dead transitions. [2024-06-20 15:57:33,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 181 transitions, 1585 flow [2024-06-20 15:57:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-20 15:57:33,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-20 15:57:33,754 INFO L175 Difference]: Start difference. First operand has 125 places, 143 transitions, 1078 flow. Second operand 9 states and 176 transitions. [2024-06-20 15:57:33,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 181 transitions, 1585 flow [2024-06-20 15:57:33,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 181 transitions, 1527 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:33,821 INFO L231 Difference]: Finished difference. Result has 130 places, 149 transitions, 1192 flow [2024-06-20 15:57:33,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1192, PETRI_PLACES=130, PETRI_TRANSITIONS=149} [2024-06-20 15:57:33,821 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-20 15:57:33,822 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 149 transitions, 1192 flow [2024-06-20 15:57:33,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:33,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:33,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:33,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 15:57:33,822 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:33,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash -564873155, now seen corresponding path program 3 times [2024-06-20 15:57:33,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:33,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811471923] [2024-06-20 15:57:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:33,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:34,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:34,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811471923] [2024-06-20 15:57:34,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811471923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:34,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:34,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:34,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210688624] [2024-06-20 15:57:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:34,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:34,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:34,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:34,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 149 transitions, 1192 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:34,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:34,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:34,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:35,774 INFO L124 PetriNetUnfolderBase]: 2106/3246 cut-off events. [2024-06-20 15:57:35,774 INFO L125 PetriNetUnfolderBase]: For 145371/145371 co-relation queries the response was YES. [2024-06-20 15:57:35,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22593 conditions, 3246 events. 2106/3246 cut-off events. For 145371/145371 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16491 event pairs, 595 based on Foata normal form. 4/3248 useless extension candidates. Maximal degree in co-relation 22537. Up to 2943 conditions per place. [2024-06-20 15:57:35,795 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 136 selfloop transitions, 44 changer transitions 0/185 dead transitions. [2024-06-20 15:57:35,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 185 transitions, 1706 flow [2024-06-20 15:57:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-20 15:57:35,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-20 15:57:35,797 INFO L175 Difference]: Start difference. First operand has 130 places, 149 transitions, 1192 flow. Second operand 9 states and 175 transitions. [2024-06-20 15:57:35,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 185 transitions, 1706 flow [2024-06-20 15:57:35,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 185 transitions, 1581 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:35,869 INFO L231 Difference]: Finished difference. Result has 133 places, 153 transitions, 1234 flow [2024-06-20 15:57:35,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=133, PETRI_TRANSITIONS=153} [2024-06-20 15:57:35,869 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-20 15:57:35,869 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 153 transitions, 1234 flow [2024-06-20 15:57:35,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:35,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:35,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:35,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 15:57:35,870 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:35,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash -564604385, now seen corresponding path program 4 times [2024-06-20 15:57:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:35,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646386883] [2024-06-20 15:57:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:35,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:36,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646386883] [2024-06-20 15:57:36,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646386883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:36,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:36,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894799695] [2024-06-20 15:57:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:36,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:36,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:36,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 153 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:36,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:36,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:36,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:37,677 INFO L124 PetriNetUnfolderBase]: 2123/3273 cut-off events. [2024-06-20 15:57:37,677 INFO L125 PetriNetUnfolderBase]: For 154167/154167 co-relation queries the response was YES. [2024-06-20 15:57:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23077 conditions, 3273 events. 2123/3273 cut-off events. For 154167/154167 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16694 event pairs, 581 based on Foata normal form. 4/3275 useless extension candidates. Maximal degree in co-relation 23020. Up to 2893 conditions per place. [2024-06-20 15:57:37,700 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 132 selfloop transitions, 51 changer transitions 0/188 dead transitions. [2024-06-20 15:57:37,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 188 transitions, 1740 flow [2024-06-20 15:57:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-20 15:57:37,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-20 15:57:37,702 INFO L175 Difference]: Start difference. First operand has 133 places, 153 transitions, 1234 flow. Second operand 9 states and 176 transitions. [2024-06-20 15:57:37,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 188 transitions, 1740 flow [2024-06-20 15:57:37,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 188 transitions, 1625 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:37,769 INFO L231 Difference]: Finished difference. Result has 137 places, 155 transitions, 1284 flow [2024-06-20 15:57:37,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1284, PETRI_PLACES=137, PETRI_TRANSITIONS=155} [2024-06-20 15:57:37,769 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 93 predicate places. [2024-06-20 15:57:37,770 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 155 transitions, 1284 flow [2024-06-20 15:57:37,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:37,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:37,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:37,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 15:57:37,770 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:37,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash -390159013, now seen corresponding path program 1 times [2024-06-20 15:57:37,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:37,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883327751] [2024-06-20 15:57:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:38,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:38,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883327751] [2024-06-20 15:57:38,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883327751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:38,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:38,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027526281] [2024-06-20 15:57:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:38,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:38,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 155 transitions, 1284 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:38,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:38,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:39,330 INFO L124 PetriNetUnfolderBase]: 1876/3008 cut-off events. [2024-06-20 15:57:39,330 INFO L125 PetriNetUnfolderBase]: For 159081/159081 co-relation queries the response was YES. [2024-06-20 15:57:39,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22135 conditions, 3008 events. 1876/3008 cut-off events. For 159081/159081 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16108 event pairs, 571 based on Foata normal form. 1/3001 useless extension candidates. Maximal degree in co-relation 22077. Up to 2704 conditions per place. [2024-06-20 15:57:39,350 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 136 selfloop transitions, 14 changer transitions 0/174 dead transitions. [2024-06-20 15:57:39,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 174 transitions, 1664 flow [2024-06-20 15:57:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:39,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-20 15:57:39,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-20 15:57:39,351 INFO L175 Difference]: Start difference. First operand has 137 places, 155 transitions, 1284 flow. Second operand 7 states and 139 transitions. [2024-06-20 15:57:39,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 174 transitions, 1664 flow [2024-06-20 15:57:39,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 174 transitions, 1517 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 15:57:39,406 INFO L231 Difference]: Finished difference. Result has 137 places, 158 transitions, 1217 flow [2024-06-20 15:57:39,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1217, PETRI_PLACES=137, PETRI_TRANSITIONS=158} [2024-06-20 15:57:39,407 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 93 predicate places. [2024-06-20 15:57:39,407 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 158 transitions, 1217 flow [2024-06-20 15:57:39,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:39,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:39,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:39,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 15:57:39,408 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:39,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash -390159447, now seen corresponding path program 2 times [2024-06-20 15:57:39,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:39,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995715440] [2024-06-20 15:57:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:39,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995715440] [2024-06-20 15:57:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995715440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:40,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:40,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721726310] [2024-06-20 15:57:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:40,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:57:40,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 158 transitions, 1217 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:40,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:40,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:57:40,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:40,814 INFO L124 PetriNetUnfolderBase]: 1987/3116 cut-off events. [2024-06-20 15:57:40,814 INFO L125 PetriNetUnfolderBase]: For 167603/167603 co-relation queries the response was YES. [2024-06-20 15:57:40,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23171 conditions, 3116 events. 1987/3116 cut-off events. For 167603/167603 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16171 event pairs, 571 based on Foata normal form. 1/3102 useless extension candidates. Maximal degree in co-relation 23112. Up to 2918 conditions per place. [2024-06-20 15:57:40,836 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 147 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2024-06-20 15:57:40,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 177 transitions, 1643 flow [2024-06-20 15:57:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-20 15:57:40,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-20 15:57:40,838 INFO L175 Difference]: Start difference. First operand has 137 places, 158 transitions, 1217 flow. Second operand 7 states and 135 transitions. [2024-06-20 15:57:40,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 177 transitions, 1643 flow [2024-06-20 15:57:40,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 177 transitions, 1585 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:40,912 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 1263 flow [2024-06-20 15:57:40,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1263, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2024-06-20 15:57:40,912 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-20 15:57:40,912 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 1263 flow [2024-06-20 15:57:40,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:40,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:40,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:40,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 15:57:40,913 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:40,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash -97719563, now seen corresponding path program 5 times [2024-06-20 15:57:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323426534] [2024-06-20 15:57:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:40,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:41,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:41,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323426534] [2024-06-20 15:57:41,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323426534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:41,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087620149] [2024-06-20 15:57:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:42,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:42,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 1263 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:42,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:42,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:42,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:42,780 INFO L124 PetriNetUnfolderBase]: 2161/3333 cut-off events. [2024-06-20 15:57:42,781 INFO L125 PetriNetUnfolderBase]: For 179222/179228 co-relation queries the response was YES. [2024-06-20 15:57:42,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24561 conditions, 3333 events. 2161/3333 cut-off events. For 179222/179228 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16972 event pairs, 600 based on Foata normal form. 7/3339 useless extension candidates. Maximal degree in co-relation 24501. Up to 3023 conditions per place. [2024-06-20 15:57:42,804 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 141 selfloop transitions, 51 changer transitions 0/197 dead transitions. [2024-06-20 15:57:42,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 197 transitions, 1818 flow [2024-06-20 15:57:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 15:57:42,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 15:57:42,805 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 1263 flow. Second operand 9 states and 171 transitions. [2024-06-20 15:57:42,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 197 transitions, 1818 flow [2024-06-20 15:57:42,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 197 transitions, 1736 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:42,932 INFO L231 Difference]: Finished difference. Result has 144 places, 169 transitions, 1415 flow [2024-06-20 15:57:42,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1415, PETRI_PLACES=144, PETRI_TRANSITIONS=169} [2024-06-20 15:57:42,933 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 100 predicate places. [2024-06-20 15:57:42,933 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 169 transitions, 1415 flow [2024-06-20 15:57:42,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:42,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:42,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:42,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 15:57:42,934 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:42,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash -97450793, now seen corresponding path program 6 times [2024-06-20 15:57:42,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:42,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382315158] [2024-06-20 15:57:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382315158] [2024-06-20 15:57:43,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382315158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:43,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:43,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:43,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229312504] [2024-06-20 15:57:43,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:43,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:43,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:43,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:44,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:44,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 169 transitions, 1415 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:44,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:44,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:44,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:44,897 INFO L124 PetriNetUnfolderBase]: 2178/3360 cut-off events. [2024-06-20 15:57:44,897 INFO L125 PetriNetUnfolderBase]: For 190645/190651 co-relation queries the response was YES. [2024-06-20 15:57:44,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25523 conditions, 3360 events. 2178/3360 cut-off events. For 190645/190651 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17112 event pairs, 595 based on Foata normal form. 7/3366 useless extension candidates. Maximal degree in co-relation 25461. Up to 3009 conditions per place. [2024-06-20 15:57:44,922 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 141 selfloop transitions, 54 changer transitions 0/200 dead transitions. [2024-06-20 15:57:44,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 200 transitions, 1939 flow [2024-06-20 15:57:44,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 15:57:44,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-20 15:57:44,925 INFO L175 Difference]: Start difference. First operand has 144 places, 169 transitions, 1415 flow. Second operand 9 states and 173 transitions. [2024-06-20 15:57:44,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 200 transitions, 1939 flow [2024-06-20 15:57:45,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 200 transitions, 1829 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-20 15:57:45,048 INFO L231 Difference]: Finished difference. Result has 149 places, 171 transitions, 1486 flow [2024-06-20 15:57:45,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1486, PETRI_PLACES=149, PETRI_TRANSITIONS=171} [2024-06-20 15:57:45,049 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 105 predicate places. [2024-06-20 15:57:45,049 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 171 transitions, 1486 flow [2024-06-20 15:57:45,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:45,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:45,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:45,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 15:57:45,050 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:45,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash -654813747, now seen corresponding path program 7 times [2024-06-20 15:57:45,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:45,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254729852] [2024-06-20 15:57:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:45,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:46,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254729852] [2024-06-20 15:57:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254729852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:46,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454555219] [2024-06-20 15:57:46,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:46,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:46,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:46,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:46,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:46,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 171 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:46,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:46,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:46,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:47,057 INFO L124 PetriNetUnfolderBase]: 2206/3398 cut-off events. [2024-06-20 15:57:47,057 INFO L125 PetriNetUnfolderBase]: For 199900/199906 co-relation queries the response was YES. [2024-06-20 15:57:47,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25792 conditions, 3398 events. 2206/3398 cut-off events. For 199900/199906 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17329 event pairs, 600 based on Foata normal form. 7/3404 useless extension candidates. Maximal degree in co-relation 25729. Up to 3089 conditions per place. [2024-06-20 15:57:47,084 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 147 selfloop transitions, 52 changer transitions 0/204 dead transitions. [2024-06-20 15:57:47,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 204 transitions, 2050 flow [2024-06-20 15:57:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-20 15:57:47,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-20 15:57:47,086 INFO L175 Difference]: Start difference. First operand has 149 places, 171 transitions, 1486 flow. Second operand 9 states and 172 transitions. [2024-06-20 15:57:47,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 204 transitions, 2050 flow [2024-06-20 15:57:47,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 204 transitions, 1881 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-20 15:57:47,209 INFO L231 Difference]: Finished difference. Result has 151 places, 176 transitions, 1528 flow [2024-06-20 15:57:47,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1528, PETRI_PLACES=151, PETRI_TRANSITIONS=176} [2024-06-20 15:57:47,209 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 107 predicate places. [2024-06-20 15:57:47,209 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 176 transitions, 1528 flow [2024-06-20 15:57:47,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:47,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:47,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:47,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 15:57:47,210 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:47,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:47,210 INFO L85 PathProgramCache]: Analyzing trace with hash -388790037, now seen corresponding path program 8 times [2024-06-20 15:57:47,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:47,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366292536] [2024-06-20 15:57:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:47,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:48,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:48,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366292536] [2024-06-20 15:57:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366292536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:48,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276206009] [2024-06-20 15:57:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:48,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:48,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 176 transitions, 1528 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:48,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:48,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:48,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:49,202 INFO L124 PetriNetUnfolderBase]: 2223/3435 cut-off events. [2024-06-20 15:57:49,203 INFO L125 PetriNetUnfolderBase]: For 210621/210627 co-relation queries the response was YES. [2024-06-20 15:57:49,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26258 conditions, 3435 events. 2223/3435 cut-off events. For 210621/210627 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17692 event pairs, 546 based on Foata normal form. 7/3441 useless extension candidates. Maximal degree in co-relation 26194. Up to 2846 conditions per place. [2024-06-20 15:57:49,228 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 132 selfloop transitions, 75 changer transitions 0/212 dead transitions. [2024-06-20 15:57:49,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 212 transitions, 2306 flow [2024-06-20 15:57:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-20 15:57:49,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-20 15:57:49,229 INFO L175 Difference]: Start difference. First operand has 151 places, 176 transitions, 1528 flow. Second operand 9 states and 175 transitions. [2024-06-20 15:57:49,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 212 transitions, 2306 flow [2024-06-20 15:57:49,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 212 transitions, 2125 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-20 15:57:49,339 INFO L231 Difference]: Finished difference. Result has 152 places, 180 transitions, 1648 flow [2024-06-20 15:57:49,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=152, PETRI_TRANSITIONS=180} [2024-06-20 15:57:49,340 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 108 predicate places. [2024-06-20 15:57:49,340 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 180 transitions, 1648 flow [2024-06-20 15:57:49,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:49,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:49,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:49,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 15:57:49,345 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:49,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash -345880941, now seen corresponding path program 9 times [2024-06-20 15:57:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:49,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691867677] [2024-06-20 15:57:49,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:50,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691867677] [2024-06-20 15:57:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691867677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:50,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:50,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:50,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914126178] [2024-06-20 15:57:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:50,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:50,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:50,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:50,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 180 transitions, 1648 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:50,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:50,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:50,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:51,309 INFO L124 PetriNetUnfolderBase]: 2240/3462 cut-off events. [2024-06-20 15:57:51,309 INFO L125 PetriNetUnfolderBase]: For 221737/221743 co-relation queries the response was YES. [2024-06-20 15:57:51,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26825 conditions, 3462 events. 2240/3462 cut-off events. For 221737/221743 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17809 event pairs, 615 based on Foata normal form. 7/3468 useless extension candidates. Maximal degree in co-relation 26762. Up to 3143 conditions per place. [2024-06-20 15:57:51,337 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 154 selfloop transitions, 51 changer transitions 0/210 dead transitions. [2024-06-20 15:57:51,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 210 transitions, 2202 flow [2024-06-20 15:57:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 15:57:51,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-20 15:57:51,338 INFO L175 Difference]: Start difference. First operand has 152 places, 180 transitions, 1648 flow. Second operand 9 states and 173 transitions. [2024-06-20 15:57:51,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 210 transitions, 2202 flow [2024-06-20 15:57:51,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 210 transitions, 2053 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:51,451 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 1686 flow [2024-06-20 15:57:51,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1686, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-06-20 15:57:51,452 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 112 predicate places. [2024-06-20 15:57:51,452 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 1686 flow [2024-06-20 15:57:51,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:51,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:51,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:51,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 15:57:51,452 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:51,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:51,453 INFO L85 PathProgramCache]: Analyzing trace with hash -345612171, now seen corresponding path program 10 times [2024-06-20 15:57:51,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:51,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997504382] [2024-06-20 15:57:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:51,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:52,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:52,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997504382] [2024-06-20 15:57:52,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997504382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:52,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:52,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:57:52,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120259931] [2024-06-20 15:57:52,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:52,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:57:52,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:52,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:57:52,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:57:52,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:57:52,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 1686 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:52,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:52,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:57:52,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:53,239 INFO L124 PetriNetUnfolderBase]: 2232/3445 cut-off events. [2024-06-20 15:57:53,239 INFO L125 PetriNetUnfolderBase]: For 226202/226208 co-relation queries the response was YES. [2024-06-20 15:57:53,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26700 conditions, 3445 events. 2232/3445 cut-off events. For 226202/226208 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17700 event pairs, 603 based on Foata normal form. 7/3451 useless extension candidates. Maximal degree in co-relation 26635. Up to 3072 conditions per place. [2024-06-20 15:57:53,266 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 150 selfloop transitions, 56 changer transitions 0/211 dead transitions. [2024-06-20 15:57:53,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 211 transitions, 2170 flow [2024-06-20 15:57:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:57:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:57:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-20 15:57:53,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-20 15:57:53,267 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 1686 flow. Second operand 9 states and 174 transitions. [2024-06-20 15:57:53,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 211 transitions, 2170 flow [2024-06-20 15:57:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 211 transitions, 1983 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-20 15:57:53,391 INFO L231 Difference]: Finished difference. Result has 159 places, 182 transitions, 1618 flow [2024-06-20 15:57:53,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1618, PETRI_PLACES=159, PETRI_TRANSITIONS=182} [2024-06-20 15:57:53,392 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 115 predicate places. [2024-06-20 15:57:53,392 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 182 transitions, 1618 flow [2024-06-20 15:57:53,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:53,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:53,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:53,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 15:57:53,392 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:53,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash 23161817, now seen corresponding path program 2 times [2024-06-20 15:57:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:53,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304816500] [2024-06-20 15:57:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:53,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:54,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:54,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304816500] [2024-06-20 15:57:54,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304816500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:54,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:54,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555652230] [2024-06-20 15:57:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:54,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:54,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:54,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:54,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:54,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 182 transitions, 1618 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:54,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:54,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:54,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:55,050 INFO L124 PetriNetUnfolderBase]: 1988/3177 cut-off events. [2024-06-20 15:57:55,051 INFO L125 PetriNetUnfolderBase]: For 228664/228672 co-relation queries the response was YES. [2024-06-20 15:57:55,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25166 conditions, 3177 events. 1988/3177 cut-off events. For 228664/228672 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17060 event pairs, 591 based on Foata normal form. 9/3166 useless extension candidates. Maximal degree in co-relation 25100. Up to 2812 conditions per place. [2024-06-20 15:57:55,078 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 141 selfloop transitions, 26 changer transitions 0/201 dead transitions. [2024-06-20 15:57:55,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 201 transitions, 2170 flow [2024-06-20 15:57:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-20 15:57:55,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2024-06-20 15:57:55,080 INFO L175 Difference]: Start difference. First operand has 159 places, 182 transitions, 1618 flow. Second operand 7 states and 137 transitions. [2024-06-20 15:57:55,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 201 transitions, 2170 flow [2024-06-20 15:57:55,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 201 transitions, 1988 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 15:57:55,167 INFO L231 Difference]: Finished difference. Result has 159 places, 190 transitions, 1619 flow [2024-06-20 15:57:55,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1619, PETRI_PLACES=159, PETRI_TRANSITIONS=190} [2024-06-20 15:57:55,168 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 115 predicate places. [2024-06-20 15:57:55,168 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 190 transitions, 1619 flow [2024-06-20 15:57:55,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:55,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:55,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:55,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 15:57:55,169 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:55,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash -841673557, now seen corresponding path program 3 times [2024-06-20 15:57:55,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558811818] [2024-06-20 15:57:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558811818] [2024-06-20 15:57:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558811818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:56,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059297711] [2024-06-20 15:57:56,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:56,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:56,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:56,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:56,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:57:56,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 190 transitions, 1619 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:56,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:56,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:57:56,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:56,581 INFO L124 PetriNetUnfolderBase]: 2088/3277 cut-off events. [2024-06-20 15:57:56,581 INFO L125 PetriNetUnfolderBase]: For 241337/241345 co-relation queries the response was YES. [2024-06-20 15:57:56,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26346 conditions, 3277 events. 2088/3277 cut-off events. For 241337/241345 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17170 event pairs, 598 based on Foata normal form. 6/3263 useless extension candidates. Maximal degree in co-relation 26278. Up to 3067 conditions per place. [2024-06-20 15:57:56,652 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 166 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-20 15:57:56,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 203 transitions, 2097 flow [2024-06-20 15:57:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-20 15:57:56,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2024-06-20 15:57:56,653 INFO L175 Difference]: Start difference. First operand has 159 places, 190 transitions, 1619 flow. Second operand 7 states and 131 transitions. [2024-06-20 15:57:56,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 203 transitions, 2097 flow [2024-06-20 15:57:56,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 203 transitions, 2033 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-20 15:57:56,788 INFO L231 Difference]: Finished difference. Result has 163 places, 193 transitions, 1689 flow [2024-06-20 15:57:56,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1689, PETRI_PLACES=163, PETRI_TRANSITIONS=193} [2024-06-20 15:57:56,788 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 119 predicate places. [2024-06-20 15:57:56,788 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 193 transitions, 1689 flow [2024-06-20 15:57:56,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:56,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:56,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:56,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 15:57:56,789 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:56,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash 23147867, now seen corresponding path program 3 times [2024-06-20 15:57:56,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:56,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537831959] [2024-06-20 15:57:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:57,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:57,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537831959] [2024-06-20 15:57:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537831959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:57,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716606239] [2024-06-20 15:57:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:57,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:57,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 193 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:57,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:57,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:57,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:57:58,383 INFO L124 PetriNetUnfolderBase]: 1982/3169 cut-off events. [2024-06-20 15:57:58,383 INFO L125 PetriNetUnfolderBase]: For 246161/246169 co-relation queries the response was YES. [2024-06-20 15:57:58,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25691 conditions, 3169 events. 1982/3169 cut-off events. For 246161/246169 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17025 event pairs, 591 based on Foata normal form. 9/3158 useless extension candidates. Maximal degree in co-relation 25621. Up to 2815 conditions per place. [2024-06-20 15:57:58,409 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 150 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2024-06-20 15:57:58,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 204 transitions, 2058 flow [2024-06-20 15:57:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:57:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:57:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-20 15:57:58,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-20 15:57:58,410 INFO L175 Difference]: Start difference. First operand has 163 places, 193 transitions, 1689 flow. Second operand 7 states and 135 transitions. [2024-06-20 15:57:58,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 204 transitions, 2058 flow [2024-06-20 15:57:58,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 204 transitions, 1916 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-20 15:57:58,561 INFO L231 Difference]: Finished difference. Result has 165 places, 194 transitions, 1600 flow [2024-06-20 15:57:58,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1600, PETRI_PLACES=165, PETRI_TRANSITIONS=194} [2024-06-20 15:57:58,561 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 121 predicate places. [2024-06-20 15:57:58,561 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 194 transitions, 1600 flow [2024-06-20 15:57:58,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:58,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:57:58,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:57:58,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 15:57:58,562 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:57:58,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:57:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash -153857793, now seen corresponding path program 1 times [2024-06-20 15:57:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:57:58,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350438999] [2024-06-20 15:57:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:57:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:57:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:57:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:57:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:57:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350438999] [2024-06-20 15:57:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350438999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:57:59,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:57:59,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:57:59,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129409026] [2024-06-20 15:57:59,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:57:59,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:57:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:57:59,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:57:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:57:59,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:57:59,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 194 transitions, 1600 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:57:59,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:57:59,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:57:59,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:00,080 INFO L124 PetriNetUnfolderBase]: 1994/3208 cut-off events. [2024-06-20 15:58:00,080 INFO L125 PetriNetUnfolderBase]: For 252608/252608 co-relation queries the response was YES. [2024-06-20 15:58:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25671 conditions, 3208 events. 1994/3208 cut-off events. For 252608/252608 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17286 event pairs, 538 based on Foata normal form. 1/3208 useless extension candidates. Maximal degree in co-relation 25600. Up to 2790 conditions per place. [2024-06-20 15:58:00,107 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 165 selfloop transitions, 14 changer transitions 0/213 dead transitions. [2024-06-20 15:58:00,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 213 transitions, 2050 flow [2024-06-20 15:58:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:58:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:58:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-20 15:58:00,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-20 15:58:00,108 INFO L175 Difference]: Start difference. First operand has 165 places, 194 transitions, 1600 flow. Second operand 7 states and 139 transitions. [2024-06-20 15:58:00,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 213 transitions, 2050 flow [2024-06-20 15:58:00,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 213 transitions, 2008 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 15:58:00,302 INFO L231 Difference]: Finished difference. Result has 167 places, 197 transitions, 1650 flow [2024-06-20 15:58:00,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1650, PETRI_PLACES=167, PETRI_TRANSITIONS=197} [2024-06-20 15:58:00,303 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 123 predicate places. [2024-06-20 15:58:00,303 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 197 transitions, 1650 flow [2024-06-20 15:58:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:00,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:00,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:00,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 15:58:00,303 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:00,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash 343485893, now seen corresponding path program 1 times [2024-06-20 15:58:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:00,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928721180] [2024-06-20 15:58:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:00,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:01,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:01,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928721180] [2024-06-20 15:58:01,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928721180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:01,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:01,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:58:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316109051] [2024-06-20 15:58:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:01,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:58:01,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:58:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:58:01,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:58:01,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 197 transitions, 1650 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:01,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:01,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:58:01,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:01,898 INFO L124 PetriNetUnfolderBase]: 2000/3217 cut-off events. [2024-06-20 15:58:01,899 INFO L125 PetriNetUnfolderBase]: For 266296/266296 co-relation queries the response was YES. [2024-06-20 15:58:01,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26238 conditions, 3217 events. 2000/3217 cut-off events. For 266296/266296 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17332 event pairs, 532 based on Foata normal form. 4/3220 useless extension candidates. Maximal degree in co-relation 26166. Up to 2800 conditions per place. [2024-06-20 15:58:01,926 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 166 selfloop transitions, 15 changer transitions 0/215 dead transitions. [2024-06-20 15:58:01,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 215 transitions, 2096 flow [2024-06-20 15:58:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:58:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:58:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-20 15:58:01,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-20 15:58:01,927 INFO L175 Difference]: Start difference. First operand has 167 places, 197 transitions, 1650 flow. Second operand 7 states and 138 transitions. [2024-06-20 15:58:01,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 215 transitions, 2096 flow [2024-06-20 15:58:02,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 215 transitions, 2026 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-20 15:58:02,107 INFO L231 Difference]: Finished difference. Result has 169 places, 201 transitions, 1671 flow [2024-06-20 15:58:02,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1671, PETRI_PLACES=169, PETRI_TRANSITIONS=201} [2024-06-20 15:58:02,107 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 125 predicate places. [2024-06-20 15:58:02,107 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 201 transitions, 1671 flow [2024-06-20 15:58:02,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:02,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:02,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 15:58:02,108 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:02,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1762985999, now seen corresponding path program 2 times [2024-06-20 15:58:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583350501] [2024-06-20 15:58:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:03,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:03,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583350501] [2024-06-20 15:58:03,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583350501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:03,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:03,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:58:03,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450370526] [2024-06-20 15:58:03,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:03,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:58:03,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:58:03,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:58:03,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:58:03,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 201 transitions, 1671 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:03,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:03,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:58:03,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:03,800 INFO L124 PetriNetUnfolderBase]: 2015/3241 cut-off events. [2024-06-20 15:58:03,800 INFO L125 PetriNetUnfolderBase]: For 276718/276720 co-relation queries the response was YES. [2024-06-20 15:58:03,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27024 conditions, 3241 events. 2015/3241 cut-off events. For 276718/276720 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17485 event pairs, 535 based on Foata normal form. 6/3246 useless extension candidates. Maximal degree in co-relation 26951. Up to 2810 conditions per place. [2024-06-20 15:58:03,826 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 163 selfloop transitions, 20 changer transitions 0/217 dead transitions. [2024-06-20 15:58:03,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 217 transitions, 2131 flow [2024-06-20 15:58:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:58:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:58:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-20 15:58:03,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-20 15:58:03,827 INFO L175 Difference]: Start difference. First operand has 169 places, 201 transitions, 1671 flow. Second operand 7 states and 138 transitions. [2024-06-20 15:58:03,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 217 transitions, 2131 flow [2024-06-20 15:58:04,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 217 transitions, 2068 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-20 15:58:04,030 INFO L231 Difference]: Finished difference. Result has 171 places, 205 transitions, 1717 flow [2024-06-20 15:58:04,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1717, PETRI_PLACES=171, PETRI_TRANSITIONS=205} [2024-06-20 15:58:04,030 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 127 predicate places. [2024-06-20 15:58:04,030 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 205 transitions, 1717 flow [2024-06-20 15:58:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:04,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:04,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:04,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 15:58:04,031 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:04,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash 23631033, now seen corresponding path program 3 times [2024-06-20 15:58:04,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:04,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324173801] [2024-06-20 15:58:04,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:04,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:05,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324173801] [2024-06-20 15:58:05,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324173801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:05,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:05,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:58:05,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024729723] [2024-06-20 15:58:05,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:05,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:58:05,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:58:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:58:05,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:58:05,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 205 transitions, 1717 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:05,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:05,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:58:05,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:05,647 INFO L124 PetriNetUnfolderBase]: 2022/3251 cut-off events. [2024-06-20 15:58:05,647 INFO L125 PetriNetUnfolderBase]: For 284375/284377 co-relation queries the response was YES. [2024-06-20 15:58:05,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27709 conditions, 3251 events. 2022/3251 cut-off events. For 284375/284377 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17638 event pairs, 534 based on Foata normal form. 5/3255 useless extension candidates. Maximal degree in co-relation 27635. Up to 2786 conditions per place. [2024-06-20 15:58:05,677 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 159 selfloop transitions, 33 changer transitions 0/226 dead transitions. [2024-06-20 15:58:05,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 226 transitions, 2345 flow [2024-06-20 15:58:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:58:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:58:05,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-20 15:58:05,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684385382059801 [2024-06-20 15:58:05,678 INFO L175 Difference]: Start difference. First operand has 171 places, 205 transitions, 1717 flow. Second operand 7 states and 141 transitions. [2024-06-20 15:58:05,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 226 transitions, 2345 flow [2024-06-20 15:58:05,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 226 transitions, 2264 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-20 15:58:05,846 INFO L231 Difference]: Finished difference. Result has 174 places, 212 transitions, 1833 flow [2024-06-20 15:58:05,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1833, PETRI_PLACES=174, PETRI_TRANSITIONS=212} [2024-06-20 15:58:05,847 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 130 predicate places. [2024-06-20 15:58:05,847 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 212 transitions, 1833 flow [2024-06-20 15:58:05,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:05,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:05,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:05,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 15:58:05,847 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:05,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash 897630992, now seen corresponding path program 1 times [2024-06-20 15:58:05,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:05,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168871677] [2024-06-20 15:58:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:05,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:06,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168871677] [2024-06-20 15:58:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168871677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:06,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:06,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:06,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234625767] [2024-06-20 15:58:06,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:07,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:07,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 212 transitions, 1833 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:07,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:07,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:07,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:08,124 INFO L124 PetriNetUnfolderBase]: 2444/3793 cut-off events. [2024-06-20 15:58:08,124 INFO L125 PetriNetUnfolderBase]: For 346945/346945 co-relation queries the response was YES. [2024-06-20 15:58:08,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33518 conditions, 3793 events. 2444/3793 cut-off events. For 346945/346945 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 20122 event pairs, 509 based on Foata normal form. 16/3808 useless extension candidates. Maximal degree in co-relation 33442. Up to 3297 conditions per place. [2024-06-20 15:58:08,158 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 244 selfloop transitions, 24 changer transitions 0/273 dead transitions. [2024-06-20 15:58:08,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 273 transitions, 2871 flow [2024-06-20 15:58:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:58:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:58:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-20 15:58:08,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-20 15:58:08,159 INFO L175 Difference]: Start difference. First operand has 174 places, 212 transitions, 1833 flow. Second operand 11 states and 220 transitions. [2024-06-20 15:58:08,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 273 transitions, 2871 flow [2024-06-20 15:58:08,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 273 transitions, 2819 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-20 15:58:08,350 INFO L231 Difference]: Finished difference. Result has 182 places, 214 transitions, 1933 flow [2024-06-20 15:58:08,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1933, PETRI_PLACES=182, PETRI_TRANSITIONS=214} [2024-06-20 15:58:08,351 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 138 predicate places. [2024-06-20 15:58:08,351 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 214 transitions, 1933 flow [2024-06-20 15:58:08,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:08,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:08,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 15:58:08,351 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:08,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 900487952, now seen corresponding path program 2 times [2024-06-20 15:58:08,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:08,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447082390] [2024-06-20 15:58:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:08,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:09,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:09,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447082390] [2024-06-20 15:58:09,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447082390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:09,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:09,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:09,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156262581] [2024-06-20 15:58:09,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:09,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:09,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:09,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:09,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:09,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 214 transitions, 1933 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:09,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:09,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:09,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:10,652 INFO L124 PetriNetUnfolderBase]: 2408/3743 cut-off events. [2024-06-20 15:58:10,652 INFO L125 PetriNetUnfolderBase]: For 339999/339999 co-relation queries the response was YES. [2024-06-20 15:58:10,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32576 conditions, 3743 events. 2408/3743 cut-off events. For 339999/339999 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19777 event pairs, 618 based on Foata normal form. 20/3762 useless extension candidates. Maximal degree in co-relation 32498. Up to 3409 conditions per place. [2024-06-20 15:58:10,682 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 237 selfloop transitions, 21 changer transitions 0/263 dead transitions. [2024-06-20 15:58:10,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 263 transitions, 2625 flow [2024-06-20 15:58:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-20 15:58:10,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-20 15:58:10,683 INFO L175 Difference]: Start difference. First operand has 182 places, 214 transitions, 1933 flow. Second operand 10 states and 198 transitions. [2024-06-20 15:58:10,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 263 transitions, 2625 flow [2024-06-20 15:58:10,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 263 transitions, 2535 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-20 15:58:10,910 INFO L231 Difference]: Finished difference. Result has 185 places, 214 transitions, 1892 flow [2024-06-20 15:58:10,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1892, PETRI_PLACES=185, PETRI_TRANSITIONS=214} [2024-06-20 15:58:10,910 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2024-06-20 15:58:10,911 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 214 transitions, 1892 flow [2024-06-20 15:58:10,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:10,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:10,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:10,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 15:58:10,911 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:10,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1136345154, now seen corresponding path program 3 times [2024-06-20 15:58:10,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:10,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893204053] [2024-06-20 15:58:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:10,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:11,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893204053] [2024-06-20 15:58:11,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893204053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:11,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:11,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:11,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734290573] [2024-06-20 15:58:11,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:11,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:11,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:12,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:12,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 214 transitions, 1892 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:12,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:12,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:12,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:13,194 INFO L124 PetriNetUnfolderBase]: 2483/3866 cut-off events. [2024-06-20 15:58:13,195 INFO L125 PetriNetUnfolderBase]: For 356110/356110 co-relation queries the response was YES. [2024-06-20 15:58:13,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33285 conditions, 3866 events. 2483/3866 cut-off events. For 356110/356110 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20685 event pairs, 578 based on Foata normal form. 20/3884 useless extension candidates. Maximal degree in co-relation 33205. Up to 3196 conditions per place. [2024-06-20 15:58:13,229 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 178 selfloop transitions, 80 changer transitions 0/263 dead transitions. [2024-06-20 15:58:13,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 263 transitions, 2654 flow [2024-06-20 15:58:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-20 15:58:13,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-20 15:58:13,231 INFO L175 Difference]: Start difference. First operand has 185 places, 214 transitions, 1892 flow. Second operand 10 states and 206 transitions. [2024-06-20 15:58:13,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 263 transitions, 2654 flow [2024-06-20 15:58:13,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 263 transitions, 2607 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 15:58:13,448 INFO L231 Difference]: Finished difference. Result has 186 places, 215 transitions, 2064 flow [2024-06-20 15:58:13,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2064, PETRI_PLACES=186, PETRI_TRANSITIONS=215} [2024-06-20 15:58:13,448 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 142 predicate places. [2024-06-20 15:58:13,448 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 215 transitions, 2064 flow [2024-06-20 15:58:13,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:13,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:13,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:13,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 15:58:13,449 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:13,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1015963820, now seen corresponding path program 1 times [2024-06-20 15:58:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:13,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367991905] [2024-06-20 15:58:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:13,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:14,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:14,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367991905] [2024-06-20 15:58:14,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367991905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:14,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:14,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:14,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289024771] [2024-06-20 15:58:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:14,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:14,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:14,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:14,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:14,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 215 transitions, 2064 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:14,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:14,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:14,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:15,595 INFO L124 PetriNetUnfolderBase]: 2500/3893 cut-off events. [2024-06-20 15:58:15,595 INFO L125 PetriNetUnfolderBase]: For 355210/355210 co-relation queries the response was YES. [2024-06-20 15:58:15,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33967 conditions, 3893 events. 2500/3893 cut-off events. For 355210/355210 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20900 event pairs, 593 based on Foata normal form. 4/3895 useless extension candidates. Maximal degree in co-relation 33886. Up to 3450 conditions per place. [2024-06-20 15:58:15,630 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 187 selfloop transitions, 70 changer transitions 0/262 dead transitions. [2024-06-20 15:58:15,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 262 transitions, 2783 flow [2024-06-20 15:58:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-20 15:58:15,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-20 15:58:15,632 INFO L175 Difference]: Start difference. First operand has 186 places, 215 transitions, 2064 flow. Second operand 10 states and 199 transitions. [2024-06-20 15:58:15,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 262 transitions, 2783 flow [2024-06-20 15:58:15,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 262 transitions, 2588 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-20 15:58:15,835 INFO L231 Difference]: Finished difference. Result has 189 places, 220 transitions, 2113 flow [2024-06-20 15:58:15,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2113, PETRI_PLACES=189, PETRI_TRANSITIONS=220} [2024-06-20 15:58:15,835 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 145 predicate places. [2024-06-20 15:58:15,835 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 220 transitions, 2113 flow [2024-06-20 15:58:15,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:15,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:15,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:15,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 15:58:15,836 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:15,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -442758900, now seen corresponding path program 4 times [2024-06-20 15:58:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:15,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764353151] [2024-06-20 15:58:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:16,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:16,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764353151] [2024-06-20 15:58:16,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764353151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:16,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:16,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059011595] [2024-06-20 15:58:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:16,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:16,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:16,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:16,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 220 transitions, 2113 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:16,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:16,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:16,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:18,121 INFO L124 PetriNetUnfolderBase]: 2575/4008 cut-off events. [2024-06-20 15:58:18,121 INFO L125 PetriNetUnfolderBase]: For 386720/386720 co-relation queries the response was YES. [2024-06-20 15:58:18,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35163 conditions, 4008 events. 2575/4008 cut-off events. For 386720/386720 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21653 event pairs, 572 based on Foata normal form. 20/4026 useless extension candidates. Maximal degree in co-relation 35080. Up to 3348 conditions per place. [2024-06-20 15:58:18,154 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 188 selfloop transitions, 74 changer transitions 0/267 dead transitions. [2024-06-20 15:58:18,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 267 transitions, 2903 flow [2024-06-20 15:58:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-20 15:58:18,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744186046511628 [2024-06-20 15:58:18,155 INFO L175 Difference]: Start difference. First operand has 189 places, 220 transitions, 2113 flow. Second operand 10 states and 204 transitions. [2024-06-20 15:58:18,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 267 transitions, 2903 flow [2024-06-20 15:58:18,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 267 transitions, 2704 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-20 15:58:18,377 INFO L231 Difference]: Finished difference. Result has 192 places, 221 transitions, 2125 flow [2024-06-20 15:58:18,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2125, PETRI_PLACES=192, PETRI_TRANSITIONS=221} [2024-06-20 15:58:18,377 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 148 predicate places. [2024-06-20 15:58:18,377 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 221 transitions, 2125 flow [2024-06-20 15:58:18,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:18,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:18,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:18,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 15:58:18,378 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1187859064, now seen corresponding path program 2 times [2024-06-20 15:58:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932161827] [2024-06-20 15:58:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:19,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:19,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932161827] [2024-06-20 15:58:19,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932161827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:19,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:19,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:19,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802582421] [2024-06-20 15:58:19,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:19,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:19,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:19,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 221 transitions, 2125 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:19,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:19,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:19,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:20,605 INFO L124 PetriNetUnfolderBase]: 2603/4091 cut-off events. [2024-06-20 15:58:20,605 INFO L125 PetriNetUnfolderBase]: For 384866/384866 co-relation queries the response was YES. [2024-06-20 15:58:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35657 conditions, 4091 events. 2603/4091 cut-off events. For 384866/384866 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 22558 event pairs, 620 based on Foata normal form. 4/4093 useless extension candidates. Maximal degree in co-relation 35573. Up to 3614 conditions per place. [2024-06-20 15:58:20,644 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 194 selfloop transitions, 69 changer transitions 0/268 dead transitions. [2024-06-20 15:58:20,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 268 transitions, 2883 flow [2024-06-20 15:58:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-20 15:58:20,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-20 15:58:20,646 INFO L175 Difference]: Start difference. First operand has 192 places, 221 transitions, 2125 flow. Second operand 10 states and 197 transitions. [2024-06-20 15:58:20,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 268 transitions, 2883 flow [2024-06-20 15:58:20,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 268 transitions, 2690 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 15:58:20,883 INFO L231 Difference]: Finished difference. Result has 195 places, 229 transitions, 2213 flow [2024-06-20 15:58:20,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2213, PETRI_PLACES=195, PETRI_TRANSITIONS=229} [2024-06-20 15:58:20,883 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 151 predicate places. [2024-06-20 15:58:20,883 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 229 transitions, 2213 flow [2024-06-20 15:58:20,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:20,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:20,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:20,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 15:58:20,884 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:20,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1355915748, now seen corresponding path program 3 times [2024-06-20 15:58:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:20,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563626006] [2024-06-20 15:58:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:20,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563626006] [2024-06-20 15:58:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563626006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:21,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149621574] [2024-06-20 15:58:21,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:22,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:22,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 229 transitions, 2213 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:22,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:22,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:23,147 INFO L124 PetriNetUnfolderBase]: 2620/4093 cut-off events. [2024-06-20 15:58:23,147 INFO L125 PetriNetUnfolderBase]: For 394162/394162 co-relation queries the response was YES. [2024-06-20 15:58:23,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36017 conditions, 4093 events. 2620/4093 cut-off events. For 394162/394162 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22330 event pairs, 615 based on Foata normal form. 4/4095 useless extension candidates. Maximal degree in co-relation 35931. Up to 3641 conditions per place. [2024-06-20 15:58:23,183 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 197 selfloop transitions, 68 changer transitions 0/270 dead transitions. [2024-06-20 15:58:23,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 270 transitions, 2923 flow [2024-06-20 15:58:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-20 15:58:23,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-20 15:58:23,184 INFO L175 Difference]: Start difference. First operand has 195 places, 229 transitions, 2213 flow. Second operand 10 states and 198 transitions. [2024-06-20 15:58:23,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 270 transitions, 2923 flow [2024-06-20 15:58:23,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 270 transitions, 2742 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-20 15:58:23,471 INFO L231 Difference]: Finished difference. Result has 200 places, 231 transitions, 2247 flow [2024-06-20 15:58:23,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2247, PETRI_PLACES=200, PETRI_TRANSITIONS=231} [2024-06-20 15:58:23,471 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2024-06-20 15:58:23,471 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 231 transitions, 2247 flow [2024-06-20 15:58:23,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:23,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:23,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:23,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 15:58:23,471 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:23,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1188098074, now seen corresponding path program 4 times [2024-06-20 15:58:23,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680728467] [2024-06-20 15:58:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680728467] [2024-06-20 15:58:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680728467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:24,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:24,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:24,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390373920] [2024-06-20 15:58:24,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:24,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:24,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:24,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 231 transitions, 2247 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:24,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:24,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:24,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:25,765 INFO L124 PetriNetUnfolderBase]: 2637/4115 cut-off events. [2024-06-20 15:58:25,766 INFO L125 PetriNetUnfolderBase]: For 407255/407255 co-relation queries the response was YES. [2024-06-20 15:58:25,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36275 conditions, 4115 events. 2637/4115 cut-off events. For 407255/407255 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22505 event pairs, 591 based on Foata normal form. 4/4117 useless extension candidates. Maximal degree in co-relation 36188. Up to 3591 conditions per place. [2024-06-20 15:58:25,811 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 192 selfloop transitions, 76 changer transitions 0/273 dead transitions. [2024-06-20 15:58:25,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 273 transitions, 2967 flow [2024-06-20 15:58:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-20 15:58:25,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-20 15:58:25,812 INFO L175 Difference]: Start difference. First operand has 200 places, 231 transitions, 2247 flow. Second operand 10 states and 198 transitions. [2024-06-20 15:58:25,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 273 transitions, 2967 flow [2024-06-20 15:58:26,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 273 transitions, 2754 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-20 15:58:26,136 INFO L231 Difference]: Finished difference. Result has 201 places, 233 transitions, 2267 flow [2024-06-20 15:58:26,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2267, PETRI_PLACES=201, PETRI_TRANSITIONS=233} [2024-06-20 15:58:26,136 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 157 predicate places. [2024-06-20 15:58:26,136 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 233 transitions, 2267 flow [2024-06-20 15:58:26,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:26,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:26,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:26,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 15:58:26,137 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:26,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash 778532372, now seen corresponding path program 1 times [2024-06-20 15:58:26,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:26,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741409779] [2024-06-20 15:58:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:26,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:26,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:26,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741409779] [2024-06-20 15:58:26,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741409779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:26,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:26,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:58:26,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482960887] [2024-06-20 15:58:26,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:26,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:58:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:58:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:58:27,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:58:27,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 233 transitions, 2267 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:27,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:27,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:58:27,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:27,833 INFO L124 PetriNetUnfolderBase]: 2509/3988 cut-off events. [2024-06-20 15:58:27,833 INFO L125 PetriNetUnfolderBase]: For 419968/419968 co-relation queries the response was YES. [2024-06-20 15:58:27,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35960 conditions, 3988 events. 2509/3988 cut-off events. For 419968/419968 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 22335 event pairs, 591 based on Foata normal form. 2/3980 useless extension candidates. Maximal degree in co-relation 35873. Up to 3687 conditions per place. [2024-06-20 15:58:27,873 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 228 selfloop transitions, 19 changer transitions 0/265 dead transitions. [2024-06-20 15:58:27,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 265 transitions, 2893 flow [2024-06-20 15:58:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:58:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:58:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-20 15:58:27,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-20 15:58:27,874 INFO L175 Difference]: Start difference. First operand has 201 places, 233 transitions, 2267 flow. Second operand 8 states and 160 transitions. [2024-06-20 15:58:27,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 265 transitions, 2893 flow [2024-06-20 15:58:28,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 265 transitions, 2678 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-20 15:58:28,120 INFO L231 Difference]: Finished difference. Result has 201 places, 236 transitions, 2161 flow [2024-06-20 15:58:28,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2161, PETRI_PLACES=201, PETRI_TRANSITIONS=236} [2024-06-20 15:58:28,121 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 157 predicate places. [2024-06-20 15:58:28,121 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 236 transitions, 2161 flow [2024-06-20 15:58:28,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:28,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:28,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:28,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 15:58:28,121 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:28,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash 255209531, now seen corresponding path program 1 times [2024-06-20 15:58:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:28,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640822266] [2024-06-20 15:58:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:28,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:29,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:29,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640822266] [2024-06-20 15:58:29,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640822266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:29,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:29,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:58:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658590597] [2024-06-20 15:58:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:29,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:58:29,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:58:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:58:29,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:58:29,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 236 transitions, 2161 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:29,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:29,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:58:29,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:30,093 INFO L124 PetriNetUnfolderBase]: 2518/4004 cut-off events. [2024-06-20 15:58:30,093 INFO L125 PetriNetUnfolderBase]: For 430148/430148 co-relation queries the response was YES. [2024-06-20 15:58:30,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36202 conditions, 4004 events. 2518/4004 cut-off events. For 430148/430148 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22476 event pairs, 600 based on Foata normal form. 1/3988 useless extension candidates. Maximal degree in co-relation 36114. Up to 3713 conditions per place. [2024-06-20 15:58:30,135 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 227 selfloop transitions, 17 changer transitions 0/262 dead transitions. [2024-06-20 15:58:30,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 262 transitions, 2773 flow [2024-06-20 15:58:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:58:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:58:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 15:58:30,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-20 15:58:30,136 INFO L175 Difference]: Start difference. First operand has 201 places, 236 transitions, 2161 flow. Second operand 8 states and 154 transitions. [2024-06-20 15:58:30,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 262 transitions, 2773 flow [2024-06-20 15:58:30,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 262 transitions, 2688 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 15:58:30,550 INFO L231 Difference]: Finished difference. Result has 203 places, 239 transitions, 2188 flow [2024-06-20 15:58:30,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2188, PETRI_PLACES=203, PETRI_TRANSITIONS=239} [2024-06-20 15:58:30,550 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 159 predicate places. [2024-06-20 15:58:30,550 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 239 transitions, 2188 flow [2024-06-20 15:58:30,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:30,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:30,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:30,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 15:58:30,551 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:30,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 244484368, now seen corresponding path program 2 times [2024-06-20 15:58:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070793027] [2024-06-20 15:58:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:31,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070793027] [2024-06-20 15:58:31,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070793027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:31,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:31,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:58:31,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229288790] [2024-06-20 15:58:31,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:31,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:58:31,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:58:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:58:31,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:58:31,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 239 transitions, 2188 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:31,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:31,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:58:31,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:32,282 INFO L124 PetriNetUnfolderBase]: 2523/4015 cut-off events. [2024-06-20 15:58:32,282 INFO L125 PetriNetUnfolderBase]: For 445567/445567 co-relation queries the response was YES. [2024-06-20 15:58:32,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36692 conditions, 4015 events. 2523/4015 cut-off events. For 445567/445567 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22590 event pairs, 600 based on Foata normal form. 2/4000 useless extension candidates. Maximal degree in co-relation 36603. Up to 3699 conditions per place. [2024-06-20 15:58:32,319 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 223 selfloop transitions, 24 changer transitions 0/265 dead transitions. [2024-06-20 15:58:32,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 265 transitions, 2806 flow [2024-06-20 15:58:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:58:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:58:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-20 15:58:32,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-20 15:58:32,320 INFO L175 Difference]: Start difference. First operand has 203 places, 239 transitions, 2188 flow. Second operand 8 states and 156 transitions. [2024-06-20 15:58:32,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 265 transitions, 2806 flow [2024-06-20 15:58:32,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 265 transitions, 2716 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-20 15:58:32,567 INFO L231 Difference]: Finished difference. Result has 205 places, 242 transitions, 2224 flow [2024-06-20 15:58:32,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2224, PETRI_PLACES=205, PETRI_TRANSITIONS=242} [2024-06-20 15:58:32,568 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 161 predicate places. [2024-06-20 15:58:32,568 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 242 transitions, 2224 flow [2024-06-20 15:58:32,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:32,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:32,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:32,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 15:58:32,568 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:32,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash 784252244, now seen corresponding path program 1 times [2024-06-20 15:58:32,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:32,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456006660] [2024-06-20 15:58:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:32,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:33,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456006660] [2024-06-20 15:58:33,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456006660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:33,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:33,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:58:33,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687581676] [2024-06-20 15:58:33,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:58:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:58:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:58:33,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:58:33,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 242 transitions, 2224 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:33,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:33,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:58:33,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:34,189 INFO L124 PetriNetUnfolderBase]: 2565/4069 cut-off events. [2024-06-20 15:58:34,190 INFO L125 PetriNetUnfolderBase]: For 452543/452545 co-relation queries the response was YES. [2024-06-20 15:58:34,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37094 conditions, 4069 events. 2565/4069 cut-off events. For 452543/452545 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22828 event pairs, 608 based on Foata normal form. 4/4065 useless extension candidates. Maximal degree in co-relation 37004. Up to 3692 conditions per place. [2024-06-20 15:58:34,230 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 216 selfloop transitions, 19 changer transitions 0/265 dead transitions. [2024-06-20 15:58:34,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 265 transitions, 2828 flow [2024-06-20 15:58:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:58:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:58:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-20 15:58:34,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-20 15:58:34,231 INFO L175 Difference]: Start difference. First operand has 205 places, 242 transitions, 2224 flow. Second operand 7 states and 139 transitions. [2024-06-20 15:58:34,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 265 transitions, 2828 flow [2024-06-20 15:58:34,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 265 transitions, 2724 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-20 15:58:34,633 INFO L231 Difference]: Finished difference. Result has 206 places, 245 transitions, 2240 flow [2024-06-20 15:58:34,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2240, PETRI_PLACES=206, PETRI_TRANSITIONS=245} [2024-06-20 15:58:34,634 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 162 predicate places. [2024-06-20 15:58:34,634 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 245 transitions, 2240 flow [2024-06-20 15:58:34,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:34,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:34,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:34,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 15:58:34,635 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:34,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:34,635 INFO L85 PathProgramCache]: Analyzing trace with hash 789966164, now seen corresponding path program 2 times [2024-06-20 15:58:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520125147] [2024-06-20 15:58:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:35,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:35,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520125147] [2024-06-20 15:58:35,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520125147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:35,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:35,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:58:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191525751] [2024-06-20 15:58:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:35,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:58:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:35,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:58:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:58:35,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:58:35,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 245 transitions, 2240 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:35,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:35,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:58:35,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:36,321 INFO L124 PetriNetUnfolderBase]: 2591/4109 cut-off events. [2024-06-20 15:58:36,321 INFO L125 PetriNetUnfolderBase]: For 471323/471325 co-relation queries the response was YES. [2024-06-20 15:58:36,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38066 conditions, 4109 events. 2591/4109 cut-off events. For 471323/471325 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23078 event pairs, 609 based on Foata normal form. 4/4105 useless extension candidates. Maximal degree in co-relation 37975. Up to 3710 conditions per place. [2024-06-20 15:58:36,362 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 213 selfloop transitions, 27 changer transitions 0/270 dead transitions. [2024-06-20 15:58:36,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 270 transitions, 3072 flow [2024-06-20 15:58:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:58:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:58:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-20 15:58:36,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-20 15:58:36,364 INFO L175 Difference]: Start difference. First operand has 206 places, 245 transitions, 2240 flow. Second operand 7 states and 139 transitions. [2024-06-20 15:58:36,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 270 transitions, 3072 flow [2024-06-20 15:58:36,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 270 transitions, 2988 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-20 15:58:36,768 INFO L231 Difference]: Finished difference. Result has 209 places, 251 transitions, 2374 flow [2024-06-20 15:58:36,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2374, PETRI_PLACES=209, PETRI_TRANSITIONS=251} [2024-06-20 15:58:36,769 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2024-06-20 15:58:36,769 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 251 transitions, 2374 flow [2024-06-20 15:58:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:36,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:36,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:36,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 15:58:36,770 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:36,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash -559521998, now seen corresponding path program 5 times [2024-06-20 15:58:36,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:36,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660162342] [2024-06-20 15:58:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:37,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:37,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660162342] [2024-06-20 15:58:37,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660162342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:37,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:37,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679189871] [2024-06-20 15:58:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:37,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:37,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:37,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 251 transitions, 2374 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:37,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:37,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:37,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:39,187 INFO L124 PetriNetUnfolderBase]: 2773/4335 cut-off events. [2024-06-20 15:58:39,187 INFO L125 PetriNetUnfolderBase]: For 526563/526563 co-relation queries the response was YES. [2024-06-20 15:58:39,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40749 conditions, 4335 events. 2773/4335 cut-off events. For 526563/526563 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23994 event pairs, 595 based on Foata normal form. 20/4353 useless extension candidates. Maximal degree in co-relation 40657. Up to 3646 conditions per place. [2024-06-20 15:58:39,230 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 215 selfloop transitions, 75 changer transitions 0/295 dead transitions. [2024-06-20 15:58:39,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 295 transitions, 3228 flow [2024-06-20 15:58:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-20 15:58:39,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-06-20 15:58:39,232 INFO L175 Difference]: Start difference. First operand has 209 places, 251 transitions, 2374 flow. Second operand 10 states and 202 transitions. [2024-06-20 15:58:39,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 295 transitions, 3228 flow [2024-06-20 15:58:39,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 295 transitions, 3134 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-20 15:58:39,556 INFO L231 Difference]: Finished difference. Result has 216 places, 252 transitions, 2501 flow [2024-06-20 15:58:39,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2501, PETRI_PLACES=216, PETRI_TRANSITIONS=252} [2024-06-20 15:58:39,557 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 172 predicate places. [2024-06-20 15:58:39,557 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 252 transitions, 2501 flow [2024-06-20 15:58:39,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:39,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:39,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:39,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 15:58:39,558 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:39,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash -331197140, now seen corresponding path program 5 times [2024-06-20 15:58:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134395817] [2024-06-20 15:58:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134395817] [2024-06-20 15:58:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134395817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:40,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971655128] [2024-06-20 15:58:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:40,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:40,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:40,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 252 transitions, 2501 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:40,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:40,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:40,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:41,964 INFO L124 PetriNetUnfolderBase]: 2826/4422 cut-off events. [2024-06-20 15:58:41,964 INFO L125 PetriNetUnfolderBase]: For 528538/528538 co-relation queries the response was YES. [2024-06-20 15:58:41,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42094 conditions, 4422 events. 2826/4422 cut-off events. For 528538/528538 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 24633 event pairs, 630 based on Foata normal form. 4/4424 useless extension candidates. Maximal degree in co-relation 42000. Up to 3909 conditions per place. [2024-06-20 15:58:42,013 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 220 selfloop transitions, 76 changer transitions 0/301 dead transitions. [2024-06-20 15:58:42,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 301 transitions, 3631 flow [2024-06-20 15:58:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-20 15:58:42,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-20 15:58:42,015 INFO L175 Difference]: Start difference. First operand has 216 places, 252 transitions, 2501 flow. Second operand 10 states and 199 transitions. [2024-06-20 15:58:42,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 301 transitions, 3631 flow [2024-06-20 15:58:42,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 301 transitions, 3428 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-20 15:58:42,351 INFO L231 Difference]: Finished difference. Result has 219 places, 262 transitions, 2691 flow [2024-06-20 15:58:42,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2691, PETRI_PLACES=219, PETRI_TRANSITIONS=262} [2024-06-20 15:58:42,351 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 175 predicate places. [2024-06-20 15:58:42,351 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 262 transitions, 2691 flow [2024-06-20 15:58:42,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:42,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:42,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:42,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 15:58:42,352 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:42,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1543691594, now seen corresponding path program 6 times [2024-06-20 15:58:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477436812] [2024-06-20 15:58:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:43,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:43,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477436812] [2024-06-20 15:58:43,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477436812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:43,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:43,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721068202] [2024-06-20 15:58:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:43,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:43,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:43,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 262 transitions, 2691 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:43,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:43,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:43,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:44,678 INFO L124 PetriNetUnfolderBase]: 2818/4405 cut-off events. [2024-06-20 15:58:44,678 INFO L125 PetriNetUnfolderBase]: For 531112/531112 co-relation queries the response was YES. [2024-06-20 15:58:44,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41947 conditions, 4405 events. 2818/4405 cut-off events. For 531112/531112 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24443 event pairs, 623 based on Foata normal form. 4/4407 useless extension candidates. Maximal degree in co-relation 41851. Up to 3944 conditions per place. [2024-06-20 15:58:44,726 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 220 selfloop transitions, 73 changer transitions 0/298 dead transitions. [2024-06-20 15:58:44,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 298 transitions, 3383 flow [2024-06-20 15:58:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-20 15:58:44,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-20 15:58:44,727 INFO L175 Difference]: Start difference. First operand has 219 places, 262 transitions, 2691 flow. Second operand 10 states and 195 transitions. [2024-06-20 15:58:44,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 298 transitions, 3383 flow [2024-06-20 15:58:45,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 298 transitions, 3196 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-20 15:58:45,187 INFO L231 Difference]: Finished difference. Result has 226 places, 262 transitions, 2659 flow [2024-06-20 15:58:45,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2506, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2659, PETRI_PLACES=226, PETRI_TRANSITIONS=262} [2024-06-20 15:58:45,188 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2024-06-20 15:58:45,188 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 262 transitions, 2659 flow [2024-06-20 15:58:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:45,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:45,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:45,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 15:58:45,188 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:45,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash 983699768, now seen corresponding path program 7 times [2024-06-20 15:58:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:45,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910614807] [2024-06-20 15:58:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:46,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:46,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910614807] [2024-06-20 15:58:46,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910614807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:46,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079140722] [2024-06-20 15:58:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:46,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:46,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:46,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:46,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:46,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:46,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 262 transitions, 2659 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:46,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:46,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:46,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:47,467 INFO L124 PetriNetUnfolderBase]: 2860/4476 cut-off events. [2024-06-20 15:58:47,467 INFO L125 PetriNetUnfolderBase]: For 552504/552504 co-relation queries the response was YES. [2024-06-20 15:58:47,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42712 conditions, 4476 events. 2860/4476 cut-off events. For 552504/552504 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25006 event pairs, 614 based on Foata normal form. 4/4478 useless extension candidates. Maximal degree in co-relation 42614. Up to 3758 conditions per place. [2024-06-20 15:58:47,516 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 209 selfloop transitions, 92 changer transitions 0/306 dead transitions. [2024-06-20 15:58:47,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 306 transitions, 3759 flow [2024-06-20 15:58:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-20 15:58:47,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-20 15:58:47,517 INFO L175 Difference]: Start difference. First operand has 226 places, 262 transitions, 2659 flow. Second operand 10 states and 199 transitions. [2024-06-20 15:58:47,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 306 transitions, 3759 flow [2024-06-20 15:58:47,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 306 transitions, 3604 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 15:58:47,875 INFO L231 Difference]: Finished difference. Result has 227 places, 266 transitions, 2859 flow [2024-06-20 15:58:47,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2859, PETRI_PLACES=227, PETRI_TRANSITIONS=266} [2024-06-20 15:58:47,876 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 183 predicate places. [2024-06-20 15:58:47,876 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 266 transitions, 2859 flow [2024-06-20 15:58:47,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:47,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:47,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:47,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 15:58:47,876 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:47,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1765336634, now seen corresponding path program 8 times [2024-06-20 15:58:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:47,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706699396] [2024-06-20 15:58:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:47,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:48,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706699396] [2024-06-20 15:58:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706699396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696501187] [2024-06-20 15:58:48,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:49,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:49,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 266 transitions, 2859 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:49,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:49,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:49,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:50,155 INFO L124 PetriNetUnfolderBase]: 2888/4529 cut-off events. [2024-06-20 15:58:50,155 INFO L125 PetriNetUnfolderBase]: For 570057/570057 co-relation queries the response was YES. [2024-06-20 15:58:50,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43586 conditions, 4529 events. 2888/4529 cut-off events. For 570057/570057 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25444 event pairs, 640 based on Foata normal form. 4/4531 useless extension candidates. Maximal degree in co-relation 43487. Up to 4049 conditions per place. [2024-06-20 15:58:50,204 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 229 selfloop transitions, 73 changer transitions 0/307 dead transitions. [2024-06-20 15:58:50,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 307 transitions, 3682 flow [2024-06-20 15:58:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-20 15:58:50,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-20 15:58:50,205 INFO L175 Difference]: Start difference. First operand has 227 places, 266 transitions, 2859 flow. Second operand 10 states and 197 transitions. [2024-06-20 15:58:50,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 307 transitions, 3682 flow [2024-06-20 15:58:50,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 307 transitions, 3490 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-20 15:58:50,551 INFO L231 Difference]: Finished difference. Result has 231 places, 271 transitions, 2939 flow [2024-06-20 15:58:50,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2939, PETRI_PLACES=231, PETRI_TRANSITIONS=271} [2024-06-20 15:58:50,552 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 187 predicate places. [2024-06-20 15:58:50,552 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 271 transitions, 2939 flow [2024-06-20 15:58:50,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:50,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:50,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:50,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 15:58:50,552 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:50,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1765097624, now seen corresponding path program 9 times [2024-06-20 15:58:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:50,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479953859] [2024-06-20 15:58:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:51,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479953859] [2024-06-20 15:58:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479953859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:51,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:51,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540118956] [2024-06-20 15:58:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:51,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:51,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:51,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:51,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 271 transitions, 2939 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:51,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:51,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:51,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:52,938 INFO L124 PetriNetUnfolderBase]: 2905/4556 cut-off events. [2024-06-20 15:58:52,938 INFO L125 PetriNetUnfolderBase]: For 582734/582734 co-relation queries the response was YES. [2024-06-20 15:58:52,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43899 conditions, 4556 events. 2905/4556 cut-off events. For 582734/582734 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25579 event pairs, 635 based on Foata normal form. 4/4558 useless extension candidates. Maximal degree in co-relation 43798. Up to 4011 conditions per place. [2024-06-20 15:58:52,986 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 229 selfloop transitions, 78 changer transitions 0/312 dead transitions. [2024-06-20 15:58:52,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 312 transitions, 3973 flow [2024-06-20 15:58:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-20 15:58:52,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-20 15:58:52,988 INFO L175 Difference]: Start difference. First operand has 231 places, 271 transitions, 2939 flow. Second operand 10 states and 200 transitions. [2024-06-20 15:58:52,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 312 transitions, 3973 flow [2024-06-20 15:58:53,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 312 transitions, 3750 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-20 15:58:53,325 INFO L231 Difference]: Finished difference. Result has 234 places, 273 transitions, 2955 flow [2024-06-20 15:58:53,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2955, PETRI_PLACES=234, PETRI_TRANSITIONS=273} [2024-06-20 15:58:53,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2024-06-20 15:58:53,326 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 273 transitions, 2955 flow [2024-06-20 15:58:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:53,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:53,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:53,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 15:58:53,326 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:53,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:53,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1771592744, now seen corresponding path program 10 times [2024-06-20 15:58:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:53,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053398468] [2024-06-20 15:58:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:54,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:54,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053398468] [2024-06-20 15:58:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053398468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:54,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:54,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:58:54,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121389749] [2024-06-20 15:58:54,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:54,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:58:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:58:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:58:54,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:58:54,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 273 transitions, 2955 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:54,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:54,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:58:54,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:56,006 INFO L124 PetriNetUnfolderBase]: 2897/4534 cut-off events. [2024-06-20 15:58:56,007 INFO L125 PetriNetUnfolderBase]: For 589181/589181 co-relation queries the response was YES. [2024-06-20 15:58:56,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43628 conditions, 4534 events. 2897/4534 cut-off events. For 589181/589181 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25393 event pairs, 628 based on Foata normal form. 4/4536 useless extension candidates. Maximal degree in co-relation 43527. Up to 4064 conditions per place. [2024-06-20 15:58:56,053 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 230 selfloop transitions, 74 changer transitions 0/309 dead transitions. [2024-06-20 15:58:56,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 309 transitions, 3667 flow [2024-06-20 15:58:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:58:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:58:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-20 15:58:56,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-20 15:58:56,054 INFO L175 Difference]: Start difference. First operand has 234 places, 273 transitions, 2955 flow. Second operand 10 states and 196 transitions. [2024-06-20 15:58:56,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 309 transitions, 3667 flow [2024-06-20 15:58:56,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 309 transitions, 3300 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-20 15:58:56,535 INFO L231 Difference]: Finished difference. Result has 235 places, 273 transitions, 2743 flow [2024-06-20 15:58:56,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=235, PETRI_TRANSITIONS=273} [2024-06-20 15:58:56,535 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 191 predicate places. [2024-06-20 15:58:56,535 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 273 transitions, 2743 flow [2024-06-20 15:58:56,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:58:56,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:56,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:56,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 15:58:56,536 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:56,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash 789973635, now seen corresponding path program 2 times [2024-06-20 15:58:56,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953669838] [2024-06-20 15:58:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:58:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:58:57,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:58:57,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953669838] [2024-06-20 15:58:57,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953669838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:58:57,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:58:57,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:58:57,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661003129] [2024-06-20 15:58:57,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:58:57,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:58:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:58:57,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:58:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:58:57,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:58:57,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 273 transitions, 2743 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:57,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:58:57,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:58:57,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:58:58,592 INFO L124 PetriNetUnfolderBase]: 2765/4427 cut-off events. [2024-06-20 15:58:58,592 INFO L125 PetriNetUnfolderBase]: For 606313/606315 co-relation queries the response was YES. [2024-06-20 15:58:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42694 conditions, 4427 events. 2765/4427 cut-off events. For 606313/606315 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25638 event pairs, 649 based on Foata normal form. 3/4415 useless extension candidates. Maximal degree in co-relation 42593. Up to 4030 conditions per place. [2024-06-20 15:58:58,641 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 240 selfloop transitions, 30 changer transitions 0/297 dead transitions. [2024-06-20 15:58:58,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 297 transitions, 3617 flow [2024-06-20 15:58:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:58:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:58:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 15:58:58,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 15:58:58,642 INFO L175 Difference]: Start difference. First operand has 235 places, 273 transitions, 2743 flow. Second operand 8 states and 152 transitions. [2024-06-20 15:58:58,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 297 transitions, 3617 flow [2024-06-20 15:58:59,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 297 transitions, 3445 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-20 15:58:59,003 INFO L231 Difference]: Finished difference. Result has 234 places, 279 transitions, 2791 flow [2024-06-20 15:58:59,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2791, PETRI_PLACES=234, PETRI_TRANSITIONS=279} [2024-06-20 15:58:59,004 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2024-06-20 15:58:59,004 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 279 transitions, 2791 flow [2024-06-20 15:58:59,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:58:59,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:58:59,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:58:59,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 15:58:59,004 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:58:59,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:58:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash 789974100, now seen corresponding path program 1 times [2024-06-20 15:58:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:58:59,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46314315] [2024-06-20 15:58:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:58:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:58:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:00,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:00,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46314315] [2024-06-20 15:59:00,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46314315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:00,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:00,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:59:00,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436239847] [2024-06-20 15:59:00,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:00,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:59:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:59:00,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:59:00,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:59:00,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 279 transitions, 2791 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 15:59:00,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:00,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:59:00,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:01,068 INFO L124 PetriNetUnfolderBase]: 2612/4243 cut-off events. [2024-06-20 15:59:01,068 INFO L125 PetriNetUnfolderBase]: For 621557/621559 co-relation queries the response was YES. [2024-06-20 15:59:01,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41841 conditions, 4243 events. 2612/4243 cut-off events. For 621557/621559 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24990 event pairs, 610 based on Foata normal form. 4/4226 useless extension candidates. Maximal degree in co-relation 41739. Up to 3723 conditions per place. [2024-06-20 15:59:01,118 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 229 selfloop transitions, 17 changer transitions 0/300 dead transitions. [2024-06-20 15:59:01,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 300 transitions, 3399 flow [2024-06-20 15:59:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:59:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:59:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-20 15:59:01,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-20 15:59:01,119 INFO L175 Difference]: Start difference. First operand has 234 places, 279 transitions, 2791 flow. Second operand 8 states and 156 transitions. [2024-06-20 15:59:01,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 300 transitions, 3399 flow [2024-06-20 15:59:01,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 300 transitions, 3305 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-20 15:59:01,591 INFO L231 Difference]: Finished difference. Result has 238 places, 282 transitions, 2811 flow [2024-06-20 15:59:01,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2811, PETRI_PLACES=238, PETRI_TRANSITIONS=282} [2024-06-20 15:59:01,592 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-20 15:59:01,592 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 282 transitions, 2811 flow [2024-06-20 15:59:01,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 15:59:01,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:01,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:01,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 15:59:01,592 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:01,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 789960212, now seen corresponding path program 3 times [2024-06-20 15:59:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:01,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746427670] [2024-06-20 15:59:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:02,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746427670] [2024-06-20 15:59:02,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746427670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:02,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:02,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:59:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493584298] [2024-06-20 15:59:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:02,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:59:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:59:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:59:02,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:02,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 282 transitions, 2811 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:02,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:02,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:02,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:03,393 INFO L124 PetriNetUnfolderBase]: 2772/4424 cut-off events. [2024-06-20 15:59:03,393 INFO L125 PetriNetUnfolderBase]: For 640806/640808 co-relation queries the response was YES. [2024-06-20 15:59:03,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43670 conditions, 4424 events. 2772/4424 cut-off events. For 640806/640808 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25464 event pairs, 630 based on Foata normal form. 4/4413 useless extension candidates. Maximal degree in co-relation 43566. Up to 4029 conditions per place. [2024-06-20 15:59:03,442 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 244 selfloop transitions, 31 changer transitions 0/302 dead transitions. [2024-06-20 15:59:03,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 302 transitions, 3483 flow [2024-06-20 15:59:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:59:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:59:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 15:59:03,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 15:59:03,443 INFO L175 Difference]: Start difference. First operand has 238 places, 282 transitions, 2811 flow. Second operand 8 states and 152 transitions. [2024-06-20 15:59:03,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 302 transitions, 3483 flow [2024-06-20 15:59:03,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 302 transitions, 3391 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-20 15:59:03,861 INFO L231 Difference]: Finished difference. Result has 240 places, 285 transitions, 2873 flow [2024-06-20 15:59:03,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2873, PETRI_PLACES=240, PETRI_TRANSITIONS=285} [2024-06-20 15:59:03,862 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 196 predicate places. [2024-06-20 15:59:03,862 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 285 transitions, 2873 flow [2024-06-20 15:59:03,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:03,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:03,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:03,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 15:59:03,862 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:03,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 289475337, now seen corresponding path program 3 times [2024-06-20 15:59:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:03,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001580509] [2024-06-20 15:59:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:03,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:04,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:04,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001580509] [2024-06-20 15:59:04,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001580509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:04,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:04,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:59:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107411358] [2024-06-20 15:59:04,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:04,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:59:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:59:04,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:59:04,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:04,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 285 transitions, 2873 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:04,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:04,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:04,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:05,826 INFO L124 PetriNetUnfolderBase]: 2769/4420 cut-off events. [2024-06-20 15:59:05,826 INFO L125 PetriNetUnfolderBase]: For 651553/651555 co-relation queries the response was YES. [2024-06-20 15:59:05,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44035 conditions, 4420 events. 2769/4420 cut-off events. For 651553/651555 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25452 event pairs, 630 based on Foata normal form. 3/4408 useless extension candidates. Maximal degree in co-relation 43930. Up to 4049 conditions per place. [2024-06-20 15:59:05,878 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 253 selfloop transitions, 22 changer transitions 0/302 dead transitions. [2024-06-20 15:59:05,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 302 transitions, 3465 flow [2024-06-20 15:59:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:59:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:59:05,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 15:59:05,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-20 15:59:05,879 INFO L175 Difference]: Start difference. First operand has 240 places, 285 transitions, 2873 flow. Second operand 8 states and 150 transitions. [2024-06-20 15:59:05,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 302 transitions, 3465 flow [2024-06-20 15:59:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 302 transitions, 3283 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-20 15:59:06,329 INFO L231 Difference]: Finished difference. Result has 242 places, 285 transitions, 2741 flow [2024-06-20 15:59:06,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2741, PETRI_PLACES=242, PETRI_TRANSITIONS=285} [2024-06-20 15:59:06,329 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 198 predicate places. [2024-06-20 15:59:06,330 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 285 transitions, 2741 flow [2024-06-20 15:59:06,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:06,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:06,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 15:59:06,330 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:06,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -484246188, now seen corresponding path program 3 times [2024-06-20 15:59:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:06,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986675239] [2024-06-20 15:59:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986675239] [2024-06-20 15:59:07,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986675239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:07,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:07,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:59:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559171640] [2024-06-20 15:59:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:07,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:59:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:59:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:59:07,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:07,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 285 transitions, 2741 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:07,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:07,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:07,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:08,018 INFO L124 PetriNetUnfolderBase]: 2780/4426 cut-off events. [2024-06-20 15:59:08,019 INFO L125 PetriNetUnfolderBase]: For 651562/651566 co-relation queries the response was YES. [2024-06-20 15:59:08,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43571 conditions, 4426 events. 2780/4426 cut-off events. For 651562/651566 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25366 event pairs, 626 based on Foata normal form. 6/4410 useless extension candidates. Maximal degree in co-relation 43465. Up to 4033 conditions per place. [2024-06-20 15:59:08,069 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 251 selfloop transitions, 19 changer transitions 0/302 dead transitions. [2024-06-20 15:59:08,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 302 transitions, 3337 flow [2024-06-20 15:59:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:59:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:59:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-20 15:59:08,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-20 15:59:08,070 INFO L175 Difference]: Start difference. First operand has 242 places, 285 transitions, 2741 flow. Second operand 7 states and 136 transitions. [2024-06-20 15:59:08,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 302 transitions, 3337 flow [2024-06-20 15:59:08,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 302 transitions, 3231 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 15:59:08,528 INFO L231 Difference]: Finished difference. Result has 242 places, 285 transitions, 2679 flow [2024-06-20 15:59:08,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2679, PETRI_PLACES=242, PETRI_TRANSITIONS=285} [2024-06-20 15:59:08,529 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 198 predicate places. [2024-06-20 15:59:08,529 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 285 transitions, 2679 flow [2024-06-20 15:59:08,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:08,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:08,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:08,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 15:59:08,529 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:08,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:08,530 INFO L85 PathProgramCache]: Analyzing trace with hash -470913708, now seen corresponding path program 4 times [2024-06-20 15:59:08,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:08,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693388916] [2024-06-20 15:59:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:08,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:09,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:09,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693388916] [2024-06-20 15:59:09,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693388916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:09,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:09,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:59:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291109296] [2024-06-20 15:59:09,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:09,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:59:09,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:59:09,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:59:09,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:09,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 285 transitions, 2679 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:09,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:09,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:09,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:10,269 INFO L124 PetriNetUnfolderBase]: 2782/4417 cut-off events. [2024-06-20 15:59:10,270 INFO L125 PetriNetUnfolderBase]: For 674116/674120 co-relation queries the response was YES. [2024-06-20 15:59:10,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44070 conditions, 4417 events. 2782/4417 cut-off events. For 674116/674120 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25255 event pairs, 607 based on Foata normal form. 6/4392 useless extension candidates. Maximal degree in co-relation 43963. Up to 4019 conditions per place. [2024-06-20 15:59:10,320 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 244 selfloop transitions, 27 changer transitions 0/303 dead transitions. [2024-06-20 15:59:10,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 303 transitions, 3371 flow [2024-06-20 15:59:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:59:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:59:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-20 15:59:10,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-20 15:59:10,321 INFO L175 Difference]: Start difference. First operand has 242 places, 285 transitions, 2679 flow. Second operand 7 states and 135 transitions. [2024-06-20 15:59:10,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 303 transitions, 3371 flow [2024-06-20 15:59:10,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 303 transitions, 3291 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:10,886 INFO L231 Difference]: Finished difference. Result has 241 places, 288 transitions, 2751 flow [2024-06-20 15:59:10,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2751, PETRI_PLACES=241, PETRI_TRANSITIONS=288} [2024-06-20 15:59:10,887 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2024-06-20 15:59:10,887 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 288 transitions, 2751 flow [2024-06-20 15:59:10,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:10,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:10,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:10,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 15:59:10,887 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:10,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1934269340, now seen corresponding path program 6 times [2024-06-20 15:59:10,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:10,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545318340] [2024-06-20 15:59:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:11,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:11,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545318340] [2024-06-20 15:59:11,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545318340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:11,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:11,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:11,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216574777] [2024-06-20 15:59:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:11,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:11,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:11,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:11,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:12,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:12,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 288 transitions, 2751 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:12,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:12,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:12,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:13,295 INFO L124 PetriNetUnfolderBase]: 2956/4636 cut-off events. [2024-06-20 15:59:13,295 INFO L125 PetriNetUnfolderBase]: For 713664/713666 co-relation queries the response was YES. [2024-06-20 15:59:13,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45462 conditions, 4636 events. 2956/4636 cut-off events. For 713664/713666 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26077 event pairs, 628 based on Foata normal form. 20/4654 useless extension candidates. Maximal degree in co-relation 45354. Up to 3917 conditions per place. [2024-06-20 15:59:13,348 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 241 selfloop transitions, 82 changer transitions 0/328 dead transitions. [2024-06-20 15:59:13,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 328 transitions, 3655 flow [2024-06-20 15:59:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-20 15:59:13,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-20 15:59:13,349 INFO L175 Difference]: Start difference. First operand has 241 places, 288 transitions, 2751 flow. Second operand 10 states and 198 transitions. [2024-06-20 15:59:13,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 328 transitions, 3655 flow [2024-06-20 15:59:13,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 328 transitions, 3531 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-20 15:59:13,909 INFO L231 Difference]: Finished difference. Result has 246 places, 289 transitions, 2866 flow [2024-06-20 15:59:13,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2866, PETRI_PLACES=246, PETRI_TRANSITIONS=289} [2024-06-20 15:59:13,909 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 202 predicate places. [2024-06-20 15:59:13,909 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 289 transitions, 2866 flow [2024-06-20 15:59:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:13,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:13,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:13,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 15:59:13,910 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:13,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:13,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1021112492, now seen corresponding path program 11 times [2024-06-20 15:59:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:13,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936055587] [2024-06-20 15:59:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:13,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:14,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:14,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936055587] [2024-06-20 15:59:14,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936055587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:14,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:14,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821230043] [2024-06-20 15:59:14,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:14,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:14,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:15,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:15,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 289 transitions, 2866 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:15,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:15,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:15,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:16,348 INFO L124 PetriNetUnfolderBase]: 2984/4678 cut-off events. [2024-06-20 15:59:16,349 INFO L125 PetriNetUnfolderBase]: For 700126/700130 co-relation queries the response was YES. [2024-06-20 15:59:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46203 conditions, 4678 events. 2984/4678 cut-off events. For 700126/700130 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 26337 event pairs, 649 based on Foata normal form. 6/4683 useless extension candidates. Maximal degree in co-relation 46094. Up to 4198 conditions per place. [2024-06-20 15:59:16,403 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 243 selfloop transitions, 79 changer transitions 0/327 dead transitions. [2024-06-20 15:59:16,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 327 transitions, 3716 flow [2024-06-20 15:59:16,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-20 15:59:16,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-20 15:59:16,405 INFO L175 Difference]: Start difference. First operand has 246 places, 289 transitions, 2866 flow. Second operand 10 states and 192 transitions. [2024-06-20 15:59:16,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 327 transitions, 3716 flow [2024-06-20 15:59:16,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 327 transitions, 3499 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:16,994 INFO L231 Difference]: Finished difference. Result has 249 places, 295 transitions, 2954 flow [2024-06-20 15:59:16,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2954, PETRI_PLACES=249, PETRI_TRANSITIONS=295} [2024-06-20 15:59:16,994 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 205 predicate places. [2024-06-20 15:59:16,994 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 295 transitions, 2954 flow [2024-06-20 15:59:16,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:16,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:16,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:16,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 15:59:16,995 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:16,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1027599242, now seen corresponding path program 12 times [2024-06-20 15:59:16,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:16,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137240019] [2024-06-20 15:59:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:18,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:18,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137240019] [2024-06-20 15:59:18,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137240019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:18,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:18,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095940543] [2024-06-20 15:59:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:18,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:18,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:18,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:18,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 295 transitions, 2954 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:18,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:18,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:18,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:19,352 INFO L124 PetriNetUnfolderBase]: 3012/4721 cut-off events. [2024-06-20 15:59:19,352 INFO L125 PetriNetUnfolderBase]: For 711722/711726 co-relation queries the response was YES. [2024-06-20 15:59:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46631 conditions, 4721 events. 3012/4721 cut-off events. For 711722/711726 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26644 event pairs, 654 based on Foata normal form. 6/4726 useless extension candidates. Maximal degree in co-relation 46520. Up to 4237 conditions per place. [2024-06-20 15:59:19,406 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 247 selfloop transitions, 80 changer transitions 0/332 dead transitions. [2024-06-20 15:59:19,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 332 transitions, 3805 flow [2024-06-20 15:59:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-20 15:59:19,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-20 15:59:19,407 INFO L175 Difference]: Start difference. First operand has 249 places, 295 transitions, 2954 flow. Second operand 10 states and 193 transitions. [2024-06-20 15:59:19,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 332 transitions, 3805 flow [2024-06-20 15:59:19,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 332 transitions, 3554 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-20 15:59:19,972 INFO L231 Difference]: Finished difference. Result has 252 places, 300 transitions, 2991 flow [2024-06-20 15:59:19,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2991, PETRI_PLACES=252, PETRI_TRANSITIONS=300} [2024-06-20 15:59:19,972 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 208 predicate places. [2024-06-20 15:59:19,972 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 300 transitions, 2991 flow [2024-06-20 15:59:19,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:19,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:19,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:19,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 15:59:19,973 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash 545524892, now seen corresponding path program 13 times [2024-06-20 15:59:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217705963] [2024-06-20 15:59:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217705963] [2024-06-20 15:59:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217705963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:21,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177997779] [2024-06-20 15:59:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:21,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:21,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:21,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 300 transitions, 2991 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:21,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:21,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:21,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:22,372 INFO L124 PetriNetUnfolderBase]: 3065/4803 cut-off events. [2024-06-20 15:59:22,372 INFO L125 PetriNetUnfolderBase]: For 741451/741455 co-relation queries the response was YES. [2024-06-20 15:59:22,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47823 conditions, 4803 events. 3065/4803 cut-off events. For 741451/741455 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27176 event pairs, 651 based on Foata normal form. 6/4808 useless extension candidates. Maximal degree in co-relation 47711. Up to 4217 conditions per place. [2024-06-20 15:59:22,421 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 245 selfloop transitions, 95 changer transitions 0/345 dead transitions. [2024-06-20 15:59:22,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 345 transitions, 4257 flow [2024-06-20 15:59:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-20 15:59:22,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-20 15:59:22,422 INFO L175 Difference]: Start difference. First operand has 252 places, 300 transitions, 2991 flow. Second operand 10 states and 197 transitions. [2024-06-20 15:59:22,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 345 transitions, 4257 flow [2024-06-20 15:59:23,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 345 transitions, 4030 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-20 15:59:23,012 INFO L231 Difference]: Finished difference. Result has 256 places, 309 transitions, 3197 flow [2024-06-20 15:59:23,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3197, PETRI_PLACES=256, PETRI_TRANSITIONS=309} [2024-06-20 15:59:23,012 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 212 predicate places. [2024-06-20 15:59:23,012 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 309 transitions, 3197 flow [2024-06-20 15:59:23,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:23,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:23,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:23,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 15:59:23,013 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:23,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1249013642, now seen corresponding path program 14 times [2024-06-20 15:59:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141189471] [2024-06-20 15:59:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141189471] [2024-06-20 15:59:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141189471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:24,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:24,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271917403] [2024-06-20 15:59:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:24,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:24,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:24,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:24,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 309 transitions, 3197 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:24,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:24,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:24,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:25,491 INFO L124 PetriNetUnfolderBase]: 3082/4850 cut-off events. [2024-06-20 15:59:25,491 INFO L125 PetriNetUnfolderBase]: For 760889/760893 co-relation queries the response was YES. [2024-06-20 15:59:25,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48390 conditions, 4850 events. 3082/4850 cut-off events. For 760889/760893 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 27656 event pairs, 681 based on Foata normal form. 6/4855 useless extension candidates. Maximal degree in co-relation 48277. Up to 4342 conditions per place. [2024-06-20 15:59:25,545 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 254 selfloop transitions, 84 changer transitions 0/343 dead transitions. [2024-06-20 15:59:25,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 343 transitions, 4047 flow [2024-06-20 15:59:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-20 15:59:25,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-20 15:59:25,546 INFO L175 Difference]: Start difference. First operand has 256 places, 309 transitions, 3197 flow. Second operand 10 states and 194 transitions. [2024-06-20 15:59:25,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 343 transitions, 4047 flow [2024-06-20 15:59:26,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 343 transitions, 3930 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-20 15:59:26,358 INFO L231 Difference]: Finished difference. Result has 263 places, 311 transitions, 3353 flow [2024-06-20 15:59:26,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3353, PETRI_PLACES=263, PETRI_TRANSITIONS=311} [2024-06-20 15:59:26,358 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 219 predicate places. [2024-06-20 15:59:26,358 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 311 transitions, 3353 flow [2024-06-20 15:59:26,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:26,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:26,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:26,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 15:59:26,359 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:26,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1940949158, now seen corresponding path program 15 times [2024-06-20 15:59:26,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:26,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026541432] [2024-06-20 15:59:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:26,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026541432] [2024-06-20 15:59:27,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026541432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:27,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:27,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:27,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153731070] [2024-06-20 15:59:27,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:27,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:27,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:27,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:27,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 311 transitions, 3353 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:27,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:27,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:27,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:28,738 INFO L124 PetriNetUnfolderBase]: 3099/4867 cut-off events. [2024-06-20 15:59:28,738 INFO L125 PetriNetUnfolderBase]: For 779526/779530 co-relation queries the response was YES. [2024-06-20 15:59:28,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49077 conditions, 4867 events. 3099/4867 cut-off events. For 779526/779530 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 27672 event pairs, 676 based on Foata normal form. 6/4872 useless extension candidates. Maximal degree in co-relation 48962. Up to 4310 conditions per place. [2024-06-20 15:59:28,799 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 251 selfloop transitions, 90 changer transitions 0/346 dead transitions. [2024-06-20 15:59:28,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 346 transitions, 4215 flow [2024-06-20 15:59:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-20 15:59:28,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-20 15:59:28,800 INFO L175 Difference]: Start difference. First operand has 263 places, 311 transitions, 3353 flow. Second operand 10 states and 194 transitions. [2024-06-20 15:59:28,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 346 transitions, 4215 flow [2024-06-20 15:59:29,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 346 transitions, 3926 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-20 15:59:29,504 INFO L231 Difference]: Finished difference. Result has 266 places, 313 transitions, 3353 flow [2024-06-20 15:59:29,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3353, PETRI_PLACES=266, PETRI_TRANSITIONS=313} [2024-06-20 15:59:29,505 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 222 predicate places. [2024-06-20 15:59:29,505 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 313 transitions, 3353 flow [2024-06-20 15:59:29,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:29,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:29,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:29,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 15:59:29,505 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:29,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1160728310, now seen corresponding path program 16 times [2024-06-20 15:59:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:29,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665805739] [2024-06-20 15:59:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:29,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665805739] [2024-06-20 15:59:30,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665805739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:30,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:30,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:30,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254280804] [2024-06-20 15:59:30,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:30,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:30,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:30,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:30,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 313 transitions, 3353 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:30,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:30,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:30,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:31,947 INFO L124 PetriNetUnfolderBase]: 3116/4904 cut-off events. [2024-06-20 15:59:31,947 INFO L125 PetriNetUnfolderBase]: For 798992/798996 co-relation queries the response was YES. [2024-06-20 15:59:31,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49554 conditions, 4904 events. 3116/4904 cut-off events. For 798992/798996 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 28014 event pairs, 691 based on Foata normal form. 6/4909 useless extension candidates. Maximal degree in co-relation 49438. Up to 4355 conditions per place. [2024-06-20 15:59:32,009 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 256 selfloop transitions, 87 changer transitions 0/348 dead transitions. [2024-06-20 15:59:32,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 348 transitions, 4223 flow [2024-06-20 15:59:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-20 15:59:32,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-20 15:59:32,010 INFO L175 Difference]: Start difference. First operand has 266 places, 313 transitions, 3353 flow. Second operand 10 states and 196 transitions. [2024-06-20 15:59:32,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 348 transitions, 4223 flow [2024-06-20 15:59:32,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 348 transitions, 3952 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:32,746 INFO L231 Difference]: Finished difference. Result has 268 places, 315 transitions, 3369 flow [2024-06-20 15:59:32,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3369, PETRI_PLACES=268, PETRI_TRANSITIONS=315} [2024-06-20 15:59:32,747 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 224 predicate places. [2024-06-20 15:59:32,747 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 315 transitions, 3369 flow [2024-06-20 15:59:32,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:32,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:32,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 15:59:32,748 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:32,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2124041228, now seen corresponding path program 17 times [2024-06-20 15:59:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:32,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993041469] [2024-06-20 15:59:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:33,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:33,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993041469] [2024-06-20 15:59:33,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993041469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:33,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:33,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:33,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116690606] [2024-06-20 15:59:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:33,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:33,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:33,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:33,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:33,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 315 transitions, 3369 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:33,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:33,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:33,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:35,111 INFO L124 PetriNetUnfolderBase]: 3133/4921 cut-off events. [2024-06-20 15:59:35,111 INFO L125 PetriNetUnfolderBase]: For 818970/818974 co-relation queries the response was YES. [2024-06-20 15:59:35,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49990 conditions, 4921 events. 3133/4921 cut-off events. For 818970/818974 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28049 event pairs, 681 based on Foata normal form. 6/4926 useless extension candidates. Maximal degree in co-relation 49873. Up to 4241 conditions per place. [2024-06-20 15:59:35,174 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 248 selfloop transitions, 98 changer transitions 0/351 dead transitions. [2024-06-20 15:59:35,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 351 transitions, 4251 flow [2024-06-20 15:59:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-20 15:59:35,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-20 15:59:35,176 INFO L175 Difference]: Start difference. First operand has 268 places, 315 transitions, 3369 flow. Second operand 10 states and 196 transitions. [2024-06-20 15:59:35,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 351 transitions, 4251 flow [2024-06-20 15:59:35,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 351 transitions, 3982 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:35,970 INFO L231 Difference]: Finished difference. Result has 270 places, 317 transitions, 3413 flow [2024-06-20 15:59:35,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3413, PETRI_PLACES=270, PETRI_TRANSITIONS=317} [2024-06-20 15:59:35,971 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 226 predicate places. [2024-06-20 15:59:35,971 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 317 transitions, 3413 flow [2024-06-20 15:59:35,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:35,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:35,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:35,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 15:59:35,972 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:35,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1265662324, now seen corresponding path program 18 times [2024-06-20 15:59:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787067395] [2024-06-20 15:59:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:37,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:37,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787067395] [2024-06-20 15:59:37,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787067395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:37,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:37,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:37,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399439613] [2024-06-20 15:59:37,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:37,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:37,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:37,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:37,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 317 transitions, 3413 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:37,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:37,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:37,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:38,497 INFO L124 PetriNetUnfolderBase]: 3150/4948 cut-off events. [2024-06-20 15:59:38,497 INFO L125 PetriNetUnfolderBase]: For 837465/837469 co-relation queries the response was YES. [2024-06-20 15:59:38,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50428 conditions, 4948 events. 3150/4948 cut-off events. For 837465/837469 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 28200 event pairs, 686 based on Foata normal form. 6/4953 useless extension candidates. Maximal degree in co-relation 50310. Up to 4403 conditions per place. [2024-06-20 15:59:38,553 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 256 selfloop transitions, 93 changer transitions 0/354 dead transitions. [2024-06-20 15:59:38,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 354 transitions, 4561 flow [2024-06-20 15:59:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-20 15:59:38,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-20 15:59:38,555 INFO L175 Difference]: Start difference. First operand has 270 places, 317 transitions, 3413 flow. Second operand 10 states and 195 transitions. [2024-06-20 15:59:38,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 354 transitions, 4561 flow [2024-06-20 15:59:39,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 354 transitions, 4266 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:39,321 INFO L231 Difference]: Finished difference. Result has 272 places, 319 transitions, 3389 flow [2024-06-20 15:59:39,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3389, PETRI_PLACES=272, PETRI_TRANSITIONS=319} [2024-06-20 15:59:39,322 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 228 predicate places. [2024-06-20 15:59:39,322 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 319 transitions, 3389 flow [2024-06-20 15:59:39,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:39,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:39,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:39,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 15:59:39,322 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:39,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1265423314, now seen corresponding path program 19 times [2024-06-20 15:59:39,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:39,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305303564] [2024-06-20 15:59:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:40,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:40,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305303564] [2024-06-20 15:59:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305303564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:40,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:40,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805288815] [2024-06-20 15:59:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:40,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:40,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:40,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 319 transitions, 3389 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:40,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:40,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:40,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:41,772 INFO L124 PetriNetUnfolderBase]: 3142/4926 cut-off events. [2024-06-20 15:59:41,773 INFO L125 PetriNetUnfolderBase]: For 841306/841310 co-relation queries the response was YES. [2024-06-20 15:59:41,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49942 conditions, 4926 events. 3142/4926 cut-off events. For 841306/841310 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27992 event pairs, 679 based on Foata normal form. 6/4931 useless extension candidates. Maximal degree in co-relation 49823. Up to 4438 conditions per place. [2024-06-20 15:59:41,833 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 256 selfloop transitions, 90 changer transitions 0/351 dead transitions. [2024-06-20 15:59:41,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 351 transitions, 4161 flow [2024-06-20 15:59:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-20 15:59:41,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441860465116279 [2024-06-20 15:59:41,834 INFO L175 Difference]: Start difference. First operand has 272 places, 319 transitions, 3389 flow. Second operand 10 states and 191 transitions. [2024-06-20 15:59:41,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 351 transitions, 4161 flow [2024-06-20 15:59:42,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 351 transitions, 3836 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:42,710 INFO L231 Difference]: Finished difference. Result has 274 places, 319 transitions, 3251 flow [2024-06-20 15:59:42,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3251, PETRI_PLACES=274, PETRI_TRANSITIONS=319} [2024-06-20 15:59:42,710 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 230 predicate places. [2024-06-20 15:59:42,711 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 319 transitions, 3251 flow [2024-06-20 15:59:42,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:42,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:42,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:42,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 15:59:42,711 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:42,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1837692776, now seen corresponding path program 20 times [2024-06-20 15:59:42,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:42,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746924015] [2024-06-20 15:59:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:42,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746924015] [2024-06-20 15:59:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746924015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:59:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886828585] [2024-06-20 15:59:43,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:59:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:59:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:59:43,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 15:59:43,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 319 transitions, 3251 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:43,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:43,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 15:59:43,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:45,051 INFO L124 PetriNetUnfolderBase]: 3134/4924 cut-off events. [2024-06-20 15:59:45,051 INFO L125 PetriNetUnfolderBase]: For 844325/844329 co-relation queries the response was YES. [2024-06-20 15:59:45,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49371 conditions, 4924 events. 3134/4924 cut-off events. For 844325/844329 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28117 event pairs, 579 based on Foata normal form. 6/4929 useless extension candidates. Maximal degree in co-relation 49251. Up to 3739 conditions per place. [2024-06-20 15:59:45,114 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 208 selfloop transitions, 143 changer transitions 0/356 dead transitions. [2024-06-20 15:59:45,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 356 transitions, 4149 flow [2024-06-20 15:59:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:59:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:59:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-20 15:59:45,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-20 15:59:45,115 INFO L175 Difference]: Start difference. First operand has 274 places, 319 transitions, 3251 flow. Second operand 10 states and 194 transitions. [2024-06-20 15:59:45,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 356 transitions, 4149 flow [2024-06-20 15:59:45,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 356 transitions, 3960 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 15:59:45,977 INFO L231 Difference]: Finished difference. Result has 275 places, 321 transitions, 3469 flow [2024-06-20 15:59:45,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3062, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3469, PETRI_PLACES=275, PETRI_TRANSITIONS=321} [2024-06-20 15:59:45,978 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 231 predicate places. [2024-06-20 15:59:45,978 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 321 transitions, 3469 flow [2024-06-20 15:59:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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) [2024-06-20 15:59:45,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:45,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 15:59:45,978 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:45,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash 725196116, now seen corresponding path program 5 times [2024-06-20 15:59:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:45,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158438062] [2024-06-20 15:59:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:45,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:46,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:46,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158438062] [2024-06-20 15:59:46,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158438062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:46,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:46,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:59:46,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385103359] [2024-06-20 15:59:46,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:46,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:59:46,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:59:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:59:46,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:46,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 321 transitions, 3469 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:46,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:46,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:46,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:47,794 INFO L124 PetriNetUnfolderBase]: 2936/4698 cut-off events. [2024-06-20 15:59:47,794 INFO L125 PetriNetUnfolderBase]: For 862238/862244 co-relation queries the response was YES. [2024-06-20 15:59:47,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49034 conditions, 4698 events. 2936/4698 cut-off events. For 862238/862244 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27501 event pairs, 626 based on Foata normal form. 8/4663 useless extension candidates. Maximal degree in co-relation 48913. Up to 4250 conditions per place. [2024-06-20 15:59:47,854 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 265 selfloop transitions, 44 changer transitions 0/341 dead transitions. [2024-06-20 15:59:47,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 341 transitions, 4527 flow [2024-06-20 15:59:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:59:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:59:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-20 15:59:47,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-20 15:59:47,855 INFO L175 Difference]: Start difference. First operand has 275 places, 321 transitions, 3469 flow. Second operand 7 states and 136 transitions. [2024-06-20 15:59:47,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 341 transitions, 4527 flow [2024-06-20 15:59:48,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 341 transitions, 4138 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-20 15:59:48,651 INFO L231 Difference]: Finished difference. Result has 274 places, 327 transitions, 3364 flow [2024-06-20 15:59:48,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3364, PETRI_PLACES=274, PETRI_TRANSITIONS=327} [2024-06-20 15:59:48,651 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 230 predicate places. [2024-06-20 15:59:48,652 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 327 transitions, 3364 flow [2024-06-20 15:59:48,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:48,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:48,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:48,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 15:59:48,652 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:48,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash -327290088, now seen corresponding path program 6 times [2024-06-20 15:59:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292208725] [2024-06-20 15:59:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:49,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:49,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292208725] [2024-06-20 15:59:49,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292208725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:49,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:49,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:59:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420963018] [2024-06-20 15:59:49,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:49,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:59:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:49,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:59:49,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:59:49,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:49,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 327 transitions, 3364 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:49,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:49,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:49,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:50,450 INFO L124 PetriNetUnfolderBase]: 2930/4708 cut-off events. [2024-06-20 15:59:50,450 INFO L125 PetriNetUnfolderBase]: For 871461/871467 co-relation queries the response was YES. [2024-06-20 15:59:50,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48517 conditions, 4708 events. 2930/4708 cut-off events. For 871461/871467 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27729 event pairs, 643 based on Foata normal form. 8/4673 useless extension candidates. Maximal degree in co-relation 48395. Up to 4245 conditions per place. [2024-06-20 15:59:50,513 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 264 selfloop transitions, 44 changer transitions 0/340 dead transitions. [2024-06-20 15:59:50,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 340 transitions, 4058 flow [2024-06-20 15:59:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:59:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:59:50,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-20 15:59:50,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-20 15:59:50,514 INFO L175 Difference]: Start difference. First operand has 274 places, 327 transitions, 3364 flow. Second operand 7 states and 135 transitions. [2024-06-20 15:59:50,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 340 transitions, 4058 flow [2024-06-20 15:59:51,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 340 transitions, 3864 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-20 15:59:51,332 INFO L231 Difference]: Finished difference. Result has 278 places, 327 transitions, 3264 flow [2024-06-20 15:59:51,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3264, PETRI_PLACES=278, PETRI_TRANSITIONS=327} [2024-06-20 15:59:51,332 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 234 predicate places. [2024-06-20 15:59:51,332 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 327 transitions, 3264 flow [2024-06-20 15:59:51,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:51,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:51,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:51,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 15:59:51,333 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:51,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash 732822612, now seen corresponding path program 2 times [2024-06-20 15:59:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:51,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822211058] [2024-06-20 15:59:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:51,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:52,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:52,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822211058] [2024-06-20 15:59:52,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822211058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:52,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:52,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:59:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788824196] [2024-06-20 15:59:52,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:52,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:59:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:59:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:59:52,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 15:59:52,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 327 transitions, 3264 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 15:59:52,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:52,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 15:59:52,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:53,542 INFO L124 PetriNetUnfolderBase]: 2746/4513 cut-off events. [2024-06-20 15:59:53,542 INFO L125 PetriNetUnfolderBase]: For 887218/887218 co-relation queries the response was YES. [2024-06-20 15:59:53,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46975 conditions, 4513 events. 2746/4513 cut-off events. For 887218/887218 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27375 event pairs, 609 based on Foata normal form. 2/4493 useless extension candidates. Maximal degree in co-relation 46851. Up to 3914 conditions per place. [2024-06-20 15:59:53,597 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 258 selfloop transitions, 17 changer transitions 0/343 dead transitions. [2024-06-20 15:59:53,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 343 transitions, 3930 flow [2024-06-20 15:59:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:59:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:59:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 15:59:53,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 15:59:53,598 INFO L175 Difference]: Start difference. First operand has 278 places, 327 transitions, 3264 flow. Second operand 8 states and 151 transitions. [2024-06-20 15:59:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 343 transitions, 3930 flow [2024-06-20 15:59:54,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 343 transitions, 3804 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 15:59:54,375 INFO L231 Difference]: Finished difference. Result has 279 places, 330 transitions, 3262 flow [2024-06-20 15:59:54,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3262, PETRI_PLACES=279, PETRI_TRANSITIONS=330} [2024-06-20 15:59:54,376 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 235 predicate places. [2024-06-20 15:59:54,376 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 330 transitions, 3262 flow [2024-06-20 15:59:54,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 15:59:54,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:54,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:54,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 15:59:54,377 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:54,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash 717585027, now seen corresponding path program 4 times [2024-06-20 15:59:54,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:54,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285085196] [2024-06-20 15:59:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:54,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285085196] [2024-06-20 15:59:55,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285085196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:55,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:55,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:59:55,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163530416] [2024-06-20 15:59:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:55,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:59:55,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:55,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:59:55,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:59:55,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:55,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 330 transitions, 3262 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:55,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:55,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:55,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:56,542 INFO L124 PetriNetUnfolderBase]: 3005/4810 cut-off events. [2024-06-20 15:59:56,543 INFO L125 PetriNetUnfolderBase]: For 910258/910262 co-relation queries the response was YES. [2024-06-20 15:59:56,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49129 conditions, 4810 events. 3005/4810 cut-off events. For 910258/910262 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28171 event pairs, 675 based on Foata normal form. 3/4803 useless extension candidates. Maximal degree in co-relation 49005. Up to 4322 conditions per place. [2024-06-20 15:59:56,604 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 273 selfloop transitions, 34 changer transitions 0/348 dead transitions. [2024-06-20 15:59:56,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 348 transitions, 4258 flow [2024-06-20 15:59:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:59:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:59:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 15:59:56,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-20 15:59:56,605 INFO L175 Difference]: Start difference. First operand has 279 places, 330 transitions, 3262 flow. Second operand 8 states and 149 transitions. [2024-06-20 15:59:56,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 348 transitions, 4258 flow [2024-06-20 15:59:57,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 348 transitions, 4126 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-20 15:59:57,272 INFO L231 Difference]: Finished difference. Result has 280 places, 336 transitions, 3382 flow [2024-06-20 15:59:57,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3382, PETRI_PLACES=280, PETRI_TRANSITIONS=336} [2024-06-20 15:59:57,272 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 236 predicate places. [2024-06-20 15:59:57,272 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 336 transitions, 3382 flow [2024-06-20 15:59:57,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:57,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:59:57,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:59:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 15:59:57,273 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 15:59:57,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:59:57,273 INFO L85 PathProgramCache]: Analyzing trace with hash 732317157, now seen corresponding path program 5 times [2024-06-20 15:59:57,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:59:57,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495604111] [2024-06-20 15:59:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:59:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:59:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:59:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:59:58,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:59:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495604111] [2024-06-20 15:59:58,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495604111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:59:58,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:59:58,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:59:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545368694] [2024-06-20 15:59:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:59:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:59:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:59:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:59:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:59:58,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 15:59:58,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 336 transitions, 3382 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:59:58,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:59:58,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 15:59:58,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:59:59,487 INFO L124 PetriNetUnfolderBase]: 3002/4806 cut-off events. [2024-06-20 15:59:59,487 INFO L125 PetriNetUnfolderBase]: For 926289/926293 co-relation queries the response was YES. [2024-06-20 15:59:59,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49362 conditions, 4806 events. 3002/4806 cut-off events. For 926289/926293 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28146 event pairs, 677 based on Foata normal form. 3/4799 useless extension candidates. Maximal degree in co-relation 49238. Up to 4297 conditions per place. [2024-06-20 15:59:59,549 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 258 selfloop transitions, 52 changer transitions 0/351 dead transitions. [2024-06-20 15:59:59,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 351 transitions, 4306 flow [2024-06-20 15:59:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:59:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:59:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 15:59:59,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-20 15:59:59,550 INFO L175 Difference]: Start difference. First operand has 280 places, 336 transitions, 3382 flow. Second operand 8 states and 149 transitions. [2024-06-20 15:59:59,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 351 transitions, 4306 flow [2024-06-20 16:00:00,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 351 transitions, 4186 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-20 16:00:00,232 INFO L231 Difference]: Finished difference. Result has 284 places, 339 transitions, 3470 flow [2024-06-20 16:00:00,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3470, PETRI_PLACES=284, PETRI_TRANSITIONS=339} [2024-06-20 16:00:00,232 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 240 predicate places. [2024-06-20 16:00:00,232 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 339 transitions, 3470 flow [2024-06-20 16:00:00,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:00,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:00,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:00,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 16:00:00,233 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:00,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash 732317622, now seen corresponding path program 3 times [2024-06-20 16:00:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:00,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007942504] [2024-06-20 16:00:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:01,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007942504] [2024-06-20 16:00:01,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007942504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:01,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:01,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:01,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050317715] [2024-06-20 16:00:01,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:01,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:01,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:01,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:00:01,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 339 transitions, 3470 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:01,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:01,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:00:01,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:02,489 INFO L124 PetriNetUnfolderBase]: 2766/4543 cut-off events. [2024-06-20 16:00:02,489 INFO L125 PetriNetUnfolderBase]: For 943904/943908 co-relation queries the response was YES. [2024-06-20 16:00:02,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48475 conditions, 4543 events. 2766/4543 cut-off events. For 943904/943908 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27515 event pairs, 616 based on Foata normal form. 6/4527 useless extension candidates. Maximal degree in co-relation 48349. Up to 3887 conditions per place. [2024-06-20 16:00:02,545 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 250 selfloop transitions, 39 changer transitions 0/360 dead transitions. [2024-06-20 16:00:02,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 360 transitions, 4456 flow [2024-06-20 16:00:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-20 16:00:02,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-20 16:00:02,546 INFO L175 Difference]: Start difference. First operand has 284 places, 339 transitions, 3470 flow. Second operand 8 states and 158 transitions. [2024-06-20 16:00:02,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 360 transitions, 4456 flow [2024-06-20 16:00:03,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 360 transitions, 4270 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-20 16:00:03,265 INFO L231 Difference]: Finished difference. Result has 286 places, 345 transitions, 3550 flow [2024-06-20 16:00:03,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3550, PETRI_PLACES=286, PETRI_TRANSITIONS=345} [2024-06-20 16:00:03,266 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places. [2024-06-20 16:00:03,266 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 345 transitions, 3550 flow [2024-06-20 16:00:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:03,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:03,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:03,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 16:00:03,267 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:03,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash -236551662, now seen corresponding path program 4 times [2024-06-20 16:00:03,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:03,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595428761] [2024-06-20 16:00:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:03,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595428761] [2024-06-20 16:00:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595428761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:04,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:04,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69516120] [2024-06-20 16:00:04,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:04,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:04,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:00:04,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 345 transitions, 3550 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:04,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:04,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:00:04,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:05,285 INFO L124 PetriNetUnfolderBase]: 3006/4807 cut-off events. [2024-06-20 16:00:05,285 INFO L125 PetriNetUnfolderBase]: For 961625/961627 co-relation queries the response was YES. [2024-06-20 16:00:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50139 conditions, 4807 events. 3006/4807 cut-off events. For 961625/961627 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28155 event pairs, 683 based on Foata normal form. 2/4796 useless extension candidates. Maximal degree in co-relation 50012. Up to 4305 conditions per place. [2024-06-20 16:00:05,346 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 278 selfloop transitions, 40 changer transitions 0/359 dead transitions. [2024-06-20 16:00:05,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 359 transitions, 4308 flow [2024-06-20 16:00:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-20 16:00:05,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-20 16:00:05,347 INFO L175 Difference]: Start difference. First operand has 286 places, 345 transitions, 3550 flow. Second operand 8 states and 148 transitions. [2024-06-20 16:00:05,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 359 transitions, 4308 flow [2024-06-20 16:00:06,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 359 transitions, 4194 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-20 16:00:06,814 INFO L231 Difference]: Finished difference. Result has 290 places, 348 transitions, 3624 flow [2024-06-20 16:00:06,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3624, PETRI_PLACES=290, PETRI_TRANSITIONS=348} [2024-06-20 16:00:06,814 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 246 predicate places. [2024-06-20 16:00:06,814 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 348 transitions, 3624 flow [2024-06-20 16:00:06,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:06,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:06,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 16:00:06,815 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:06,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 628269731, now seen corresponding path program 6 times [2024-06-20 16:00:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829950309] [2024-06-20 16:00:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:07,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:07,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829950309] [2024-06-20 16:00:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829950309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114129385] [2024-06-20 16:00:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:07,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:08,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:00:08,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 348 transitions, 3624 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:08,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:08,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:00:08,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:09,085 INFO L124 PetriNetUnfolderBase]: 3003/4808 cut-off events. [2024-06-20 16:00:09,085 INFO L125 PetriNetUnfolderBase]: For 971614/971618 co-relation queries the response was YES. [2024-06-20 16:00:09,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50471 conditions, 4808 events. 3003/4808 cut-off events. For 971614/971618 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28127 event pairs, 676 based on Foata normal form. 3/4801 useless extension candidates. Maximal degree in co-relation 50342. Up to 4328 conditions per place. [2024-06-20 16:00:09,156 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 289 selfloop transitions, 29 changer transitions 0/359 dead transitions. [2024-06-20 16:00:09,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 359 transitions, 4286 flow [2024-06-20 16:00:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-20 16:00:09,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42441860465116277 [2024-06-20 16:00:09,157 INFO L175 Difference]: Start difference. First operand has 290 places, 348 transitions, 3624 flow. Second operand 8 states and 146 transitions. [2024-06-20 16:00:09,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 359 transitions, 4286 flow [2024-06-20 16:00:10,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 359 transitions, 4054 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-20 16:00:10,016 INFO L231 Difference]: Finished difference. Result has 292 places, 348 transitions, 3456 flow [2024-06-20 16:00:10,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3392, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3456, PETRI_PLACES=292, PETRI_TRANSITIONS=348} [2024-06-20 16:00:10,016 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 248 predicate places. [2024-06-20 16:00:10,016 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 348 transitions, 3456 flow [2024-06-20 16:00:10,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:10,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:10,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:10,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 16:00:10,016 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:10,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash -322061422, now seen corresponding path program 4 times [2024-06-20 16:00:10,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:10,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420497544] [2024-06-20 16:00:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:11,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:11,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420497544] [2024-06-20 16:00:11,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420497544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:11,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:11,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:11,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322889532] [2024-06-20 16:00:11,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:11,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:11,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:11,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:11,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:11,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:00:11,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 348 transitions, 3456 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:11,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:11,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:00:11,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:12,279 INFO L124 PetriNetUnfolderBase]: 2751/4523 cut-off events. [2024-06-20 16:00:12,279 INFO L125 PetriNetUnfolderBase]: For 978617/978621 co-relation queries the response was YES. [2024-06-20 16:00:12,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48618 conditions, 4523 events. 2751/4523 cut-off events. For 978617/978621 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27390 event pairs, 618 based on Foata normal form. 6/4507 useless extension candidates. Maximal degree in co-relation 48488. Up to 3907 conditions per place. [2024-06-20 16:00:12,340 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 267 selfloop transitions, 22 changer transitions 0/360 dead transitions. [2024-06-20 16:00:12,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 360 transitions, 4066 flow [2024-06-20 16:00:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:00:12,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:00:12,341 INFO L175 Difference]: Start difference. First operand has 292 places, 348 transitions, 3456 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:00:12,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 360 transitions, 4066 flow [2024-06-20 16:00:13,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 360 transitions, 3948 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-20 16:00:13,259 INFO L231 Difference]: Finished difference. Result has 293 places, 348 transitions, 3388 flow [2024-06-20 16:00:13,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3388, PETRI_PLACES=293, PETRI_TRANSITIONS=348} [2024-06-20 16:00:13,259 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 249 predicate places. [2024-06-20 16:00:13,259 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 348 transitions, 3388 flow [2024-06-20 16:00:13,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:13,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:13,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:13,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 16:00:13,260 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:13,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash -513886663, now seen corresponding path program 1 times [2024-06-20 16:00:13,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:13,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759483774] [2024-06-20 16:00:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:13,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:14,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:14,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759483774] [2024-06-20 16:00:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759483774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:14,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:14,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429507148] [2024-06-20 16:00:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:14,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:00:14,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 348 transitions, 3388 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:14,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:14,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:00:14,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:15,560 INFO L124 PetriNetUnfolderBase]: 2827/4607 cut-off events. [2024-06-20 16:00:15,560 INFO L125 PetriNetUnfolderBase]: For 1003946/1003951 co-relation queries the response was YES. [2024-06-20 16:00:15,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49334 conditions, 4607 events. 2827/4607 cut-off events. For 1003946/1003951 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27440 event pairs, 581 based on Foata normal form. 3/4567 useless extension candidates. Maximal degree in co-relation 49203. Up to 4105 conditions per place. [2024-06-20 16:00:15,622 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 306 selfloop transitions, 17 changer transitions 0/369 dead transitions. [2024-06-20 16:00:15,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 369 transitions, 4150 flow [2024-06-20 16:00:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-20 16:00:15,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-20 16:00:15,623 INFO L175 Difference]: Start difference. First operand has 293 places, 348 transitions, 3388 flow. Second operand 8 states and 156 transitions. [2024-06-20 16:00:15,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 369 transitions, 4150 flow [2024-06-20 16:00:16,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 369 transitions, 4068 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 16:00:16,977 INFO L231 Difference]: Finished difference. Result has 294 places, 351 transitions, 3420 flow [2024-06-20 16:00:16,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3420, PETRI_PLACES=294, PETRI_TRANSITIONS=351} [2024-06-20 16:00:16,978 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 250 predicate places. [2024-06-20 16:00:16,978 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 351 transitions, 3420 flow [2024-06-20 16:00:16,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:16,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:16,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:16,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 16:00:16,978 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:16,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash -470898053, now seen corresponding path program 2 times [2024-06-20 16:00:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:16,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491851214] [2024-06-20 16:00:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:18,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:18,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491851214] [2024-06-20 16:00:18,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491851214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:18,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:18,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134146273] [2024-06-20 16:00:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:18,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:18,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:18,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:18,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:18,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:00:18,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 351 transitions, 3420 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:18,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:18,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:00:18,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:19,578 INFO L124 PetriNetUnfolderBase]: 2862/4665 cut-off events. [2024-06-20 16:00:19,579 INFO L125 PetriNetUnfolderBase]: For 1033202/1033207 co-relation queries the response was YES. [2024-06-20 16:00:19,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50543 conditions, 4665 events. 2862/4665 cut-off events. For 1033202/1033207 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 27876 event pairs, 579 based on Foata normal form. 8/4630 useless extension candidates. Maximal degree in co-relation 50411. Up to 4141 conditions per place. [2024-06-20 16:00:19,646 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 307 selfloop transitions, 25 changer transitions 0/378 dead transitions. [2024-06-20 16:00:19,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 378 transitions, 4548 flow [2024-06-20 16:00:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-20 16:00:19,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-20 16:00:19,647 INFO L175 Difference]: Start difference. First operand has 294 places, 351 transitions, 3420 flow. Second operand 8 states and 157 transitions. [2024-06-20 16:00:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 378 transitions, 4548 flow [2024-06-20 16:00:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 378 transitions, 4464 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-20 16:00:21,117 INFO L231 Difference]: Finished difference. Result has 297 places, 362 transitions, 3636 flow [2024-06-20 16:00:21,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3336, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3636, PETRI_PLACES=297, PETRI_TRANSITIONS=362} [2024-06-20 16:00:21,117 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 253 predicate places. [2024-06-20 16:00:21,118 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 362 transitions, 3636 flow [2024-06-20 16:00:21,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:21,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:21,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:21,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 16:00:21,118 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:21,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash 732563421, now seen corresponding path program 3 times [2024-06-20 16:00:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618500686] [2024-06-20 16:00:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618500686] [2024-06-20 16:00:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618500686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:22,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:22,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936378859] [2024-06-20 16:00:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:22,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:22,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:00:22,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 362 transitions, 3636 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:22,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:22,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:00:22,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:23,535 INFO L124 PetriNetUnfolderBase]: 2878/4693 cut-off events. [2024-06-20 16:00:23,536 INFO L125 PetriNetUnfolderBase]: For 1058833/1058849 co-relation queries the response was YES. [2024-06-20 16:00:23,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51559 conditions, 4693 events. 2878/4693 cut-off events. For 1058833/1058849 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 28167 event pairs, 575 based on Foata normal form. 8/4657 useless extension candidates. Maximal degree in co-relation 51425. Up to 4098 conditions per place. [2024-06-20 16:00:23,596 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 293 selfloop transitions, 49 changer transitions 0/388 dead transitions. [2024-06-20 16:00:23,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 388 transitions, 5028 flow [2024-06-20 16:00:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-20 16:00:23,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-20 16:00:23,597 INFO L175 Difference]: Start difference. First operand has 297 places, 362 transitions, 3636 flow. Second operand 8 states and 160 transitions. [2024-06-20 16:00:23,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 388 transitions, 5028 flow [2024-06-20 16:00:25,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 388 transitions, 4930 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-20 16:00:25,205 INFO L231 Difference]: Finished difference. Result has 301 places, 372 transitions, 3899 flow [2024-06-20 16:00:25,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3538, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3899, PETRI_PLACES=301, PETRI_TRANSITIONS=372} [2024-06-20 16:00:25,205 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 257 predicate places. [2024-06-20 16:00:25,205 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 372 transitions, 3899 flow [2024-06-20 16:00:25,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:25,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:25,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 16:00:25,206 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:25,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:25,206 INFO L85 PathProgramCache]: Analyzing trace with hash 725211771, now seen corresponding path program 4 times [2024-06-20 16:00:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:25,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007579774] [2024-06-20 16:00:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:25,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:26,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:26,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007579774] [2024-06-20 16:00:26,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007579774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:26,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:26,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15400108] [2024-06-20 16:00:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:26,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:00:26,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 372 transitions, 3899 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:26,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:26,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:00:26,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:27,741 INFO L124 PetriNetUnfolderBase]: 2881/4700 cut-off events. [2024-06-20 16:00:27,741 INFO L125 PetriNetUnfolderBase]: For 1069636/1069652 co-relation queries the response was YES. [2024-06-20 16:00:27,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52077 conditions, 4700 events. 2881/4700 cut-off events. For 1069636/1069652 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 28183 event pairs, 579 based on Foata normal form. 7/4664 useless extension candidates. Maximal degree in co-relation 51941. Up to 4160 conditions per place. [2024-06-20 16:00:27,808 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 314 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2024-06-20 16:00:27,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 390 transitions, 4947 flow [2024-06-20 16:00:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-20 16:00:27,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-20 16:00:27,809 INFO L175 Difference]: Start difference. First operand has 301 places, 372 transitions, 3899 flow. Second operand 8 states and 157 transitions. [2024-06-20 16:00:27,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 390 transitions, 4947 flow [2024-06-20 16:00:29,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 390 transitions, 4799 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-20 16:00:29,607 INFO L231 Difference]: Finished difference. Result has 306 places, 376 transitions, 3917 flow [2024-06-20 16:00:29,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3761, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3917, PETRI_PLACES=306, PETRI_TRANSITIONS=376} [2024-06-20 16:00:29,608 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 262 predicate places. [2024-06-20 16:00:29,608 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 376 transitions, 3917 flow [2024-06-20 16:00:29,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:00:29,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:29,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:29,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 16:00:29,608 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:29,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:29,608 INFO L85 PathProgramCache]: Analyzing trace with hash -306806446, now seen corresponding path program 1 times [2024-06-20 16:00:29,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:29,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575429150] [2024-06-20 16:00:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:29,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:31,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575429150] [2024-06-20 16:00:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575429150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:00:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27263175] [2024-06-20 16:00:31,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:31,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:00:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:00:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:00:31,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:00:31,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 376 transitions, 3917 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:31,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:31,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:00:31,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:32,282 INFO L124 PetriNetUnfolderBase]: 2826/4644 cut-off events. [2024-06-20 16:00:32,283 INFO L125 PetriNetUnfolderBase]: For 1070245/1070245 co-relation queries the response was YES. [2024-06-20 16:00:32,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51317 conditions, 4644 events. 2826/4644 cut-off events. For 1070245/1070245 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 28110 event pairs, 607 based on Foata normal form. 2/4624 useless extension candidates. Maximal degree in co-relation 51179. Up to 4027 conditions per place. [2024-06-20 16:00:32,350 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 304 selfloop transitions, 19 changer transitions 0/394 dead transitions. [2024-06-20 16:00:32,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 394 transitions, 4705 flow [2024-06-20 16:00:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:00:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:00:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:00:32,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-20 16:00:32,353 INFO L175 Difference]: Start difference. First operand has 306 places, 376 transitions, 3917 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:00:32,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 394 transitions, 4705 flow [2024-06-20 16:00:34,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 394 transitions, 4513 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-20 16:00:34,034 INFO L231 Difference]: Finished difference. Result has 308 places, 381 transitions, 3890 flow [2024-06-20 16:00:34,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3890, PETRI_PLACES=308, PETRI_TRANSITIONS=381} [2024-06-20 16:00:34,035 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 264 predicate places. [2024-06-20 16:00:34,035 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 381 transitions, 3890 flow [2024-06-20 16:00:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:34,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:34,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:34,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 16:00:34,036 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:34,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1584922526, now seen corresponding path program 1 times [2024-06-20 16:00:34,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:34,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921812900] [2024-06-20 16:00:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:35,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921812900] [2024-06-20 16:00:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921812900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:35,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:35,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:00:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168060857] [2024-06-20 16:00:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:00:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:00:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:00:35,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:00:35,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 381 transitions, 3890 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:35,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:35,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:00:35,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:36,788 INFO L124 PetriNetUnfolderBase]: 3359/5319 cut-off events. [2024-06-20 16:00:36,788 INFO L125 PetriNetUnfolderBase]: For 1135868/1135868 co-relation queries the response was YES. [2024-06-20 16:00:36,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55802 conditions, 5319 events. 3359/5319 cut-off events. For 1135868/1135868 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31011 event pairs, 658 based on Foata normal form. 12/5329 useless extension candidates. Maximal degree in co-relation 55664. Up to 4375 conditions per place. [2024-06-20 16:00:36,856 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 331 selfloop transitions, 105 changer transitions 0/441 dead transitions. [2024-06-20 16:00:36,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 441 transitions, 5132 flow [2024-06-20 16:00:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:00:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:00:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-20 16:00:36,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-06-20 16:00:36,858 INFO L175 Difference]: Start difference. First operand has 308 places, 381 transitions, 3890 flow. Second operand 11 states and 223 transitions. [2024-06-20 16:00:36,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 441 transitions, 5132 flow [2024-06-20 16:00:38,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 441 transitions, 5015 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-20 16:00:38,456 INFO L231 Difference]: Finished difference. Result has 315 places, 389 transitions, 4179 flow [2024-06-20 16:00:38,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3773, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4179, PETRI_PLACES=315, PETRI_TRANSITIONS=389} [2024-06-20 16:00:38,457 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 271 predicate places. [2024-06-20 16:00:38,457 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 389 transitions, 4179 flow [2024-06-20 16:00:38,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:38,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:38,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:38,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 16:00:38,457 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:38,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1630831002, now seen corresponding path program 1 times [2024-06-20 16:00:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381963302] [2024-06-20 16:00:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:38,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:39,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381963302] [2024-06-20 16:00:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381963302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366098374] [2024-06-20 16:00:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:39,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:39,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:00:39,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 389 transitions, 4179 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:39,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:39,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:00:39,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:40,608 INFO L124 PetriNetUnfolderBase]: 3369/5344 cut-off events. [2024-06-20 16:00:40,608 INFO L125 PetriNetUnfolderBase]: For 1128001/1128003 co-relation queries the response was YES. [2024-06-20 16:00:40,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56834 conditions, 5344 events. 3369/5344 cut-off events. For 1128001/1128003 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 31342 event pairs, 684 based on Foata normal form. 4/5347 useless extension candidates. Maximal degree in co-relation 56693. Up to 5040 conditions per place. [2024-06-20 16:00:40,677 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 384 selfloop transitions, 30 changer transitions 0/419 dead transitions. [2024-06-20 16:00:40,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 419 transitions, 5199 flow [2024-06-20 16:00:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 16:00:40,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-20 16:00:40,678 INFO L175 Difference]: Start difference. First operand has 315 places, 389 transitions, 4179 flow. Second operand 8 states and 154 transitions. [2024-06-20 16:00:40,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 419 transitions, 5199 flow [2024-06-20 16:00:42,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 419 transitions, 4929 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-20 16:00:42,445 INFO L231 Difference]: Finished difference. Result has 317 places, 392 transitions, 4087 flow [2024-06-20 16:00:42,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3909, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4087, PETRI_PLACES=317, PETRI_TRANSITIONS=392} [2024-06-20 16:00:42,445 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 273 predicate places. [2024-06-20 16:00:42,445 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 392 transitions, 4087 flow [2024-06-20 16:00:42,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:42,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:42,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:42,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 16:00:42,446 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:42,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1625117082, now seen corresponding path program 2 times [2024-06-20 16:00:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:42,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977947733] [2024-06-20 16:00:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:43,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:43,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977947733] [2024-06-20 16:00:43,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977947733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:43,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:43,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:00:43,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650130428] [2024-06-20 16:00:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:43,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:00:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:00:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:00:43,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:00:43,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 392 transitions, 4087 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:43,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:43,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:00:43,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:44,613 INFO L124 PetriNetUnfolderBase]: 3395/5384 cut-off events. [2024-06-20 16:00:44,613 INFO L125 PetriNetUnfolderBase]: For 1153617/1153619 co-relation queries the response was YES. [2024-06-20 16:00:44,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57364 conditions, 5384 events. 3395/5384 cut-off events. For 1153617/1153619 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31545 event pairs, 685 based on Foata normal form. 4/5387 useless extension candidates. Maximal degree in co-relation 57222. Up to 5056 conditions per place. [2024-06-20 16:00:44,685 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 381 selfloop transitions, 38 changer transitions 0/424 dead transitions. [2024-06-20 16:00:44,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 424 transitions, 5457 flow [2024-06-20 16:00:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:00:44,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:00:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 16:00:44,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-20 16:00:44,686 INFO L175 Difference]: Start difference. First operand has 317 places, 392 transitions, 4087 flow. Second operand 8 states and 154 transitions. [2024-06-20 16:00:44,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 424 transitions, 5457 flow [2024-06-20 16:00:46,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 424 transitions, 5319 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-20 16:00:46,466 INFO L231 Difference]: Finished difference. Result has 320 places, 398 transitions, 4261 flow [2024-06-20 16:00:46,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4261, PETRI_PLACES=320, PETRI_TRANSITIONS=398} [2024-06-20 16:00:46,467 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 276 predicate places. [2024-06-20 16:00:46,467 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 398 transitions, 4261 flow [2024-06-20 16:00:46,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:46,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:46,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:46,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 16:00:46,467 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:46,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash -950225678, now seen corresponding path program 2 times [2024-06-20 16:00:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:46,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664306404] [2024-06-20 16:00:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664306404] [2024-06-20 16:00:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664306404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:47,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:47,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:00:47,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020813402] [2024-06-20 16:00:47,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:47,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:00:47,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:47,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:00:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:00:47,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:00:47,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 398 transitions, 4261 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:47,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:47,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:00:47,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:49,540 INFO L124 PetriNetUnfolderBase]: 3505/5585 cut-off events. [2024-06-20 16:00:49,540 INFO L125 PetriNetUnfolderBase]: For 1225148/1225148 co-relation queries the response was YES. [2024-06-20 16:00:49,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59234 conditions, 5585 events. 3505/5585 cut-off events. For 1225148/1225148 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 33298 event pairs, 694 based on Foata normal form. 12/5595 useless extension candidates. Maximal degree in co-relation 59091. Up to 4698 conditions per place. [2024-06-20 16:00:49,618 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 348 selfloop transitions, 100 changer transitions 0/453 dead transitions. [2024-06-20 16:00:49,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 453 transitions, 5504 flow [2024-06-20 16:00:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:00:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:00:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-20 16:00:49,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-06-20 16:00:49,619 INFO L175 Difference]: Start difference. First operand has 320 places, 398 transitions, 4261 flow. Second operand 11 states and 223 transitions. [2024-06-20 16:00:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 453 transitions, 5504 flow [2024-06-20 16:00:51,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 453 transitions, 5354 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-20 16:00:51,661 INFO L231 Difference]: Finished difference. Result has 329 places, 404 transitions, 4482 flow [2024-06-20 16:00:51,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4111, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4482, PETRI_PLACES=329, PETRI_TRANSITIONS=404} [2024-06-20 16:00:51,662 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 285 predicate places. [2024-06-20 16:00:51,662 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 404 transitions, 4482 flow [2024-06-20 16:00:51,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:51,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:51,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:51,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 16:00:51,662 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:51,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash -756286268, now seen corresponding path program 3 times [2024-06-20 16:00:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:51,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846794126] [2024-06-20 16:00:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:51,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:52,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846794126] [2024-06-20 16:00:52,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846794126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:52,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:52,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:00:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766589652] [2024-06-20 16:00:52,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:52,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:00:52,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:52,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:00:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:00:52,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:00:52,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 404 transitions, 4482 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:52,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:52,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:00:52,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:54,436 INFO L124 PetriNetUnfolderBase]: 3587/5737 cut-off events. [2024-06-20 16:00:54,436 INFO L125 PetriNetUnfolderBase]: For 1261645/1261645 co-relation queries the response was YES. [2024-06-20 16:00:54,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61146 conditions, 5737 events. 3587/5737 cut-off events. For 1261645/1261645 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 34624 event pairs, 719 based on Foata normal form. 12/5747 useless extension candidates. Maximal degree in co-relation 60999. Up to 4840 conditions per place. [2024-06-20 16:00:54,518 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 348 selfloop transitions, 104 changer transitions 0/457 dead transitions. [2024-06-20 16:00:54,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 457 transitions, 5718 flow [2024-06-20 16:00:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:00:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:00:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-20 16:00:54,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693446088794926 [2024-06-20 16:00:54,520 INFO L175 Difference]: Start difference. First operand has 329 places, 404 transitions, 4482 flow. Second operand 11 states and 222 transitions. [2024-06-20 16:00:54,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 457 transitions, 5718 flow [2024-06-20 16:00:56,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 457 transitions, 5447 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-20 16:00:56,564 INFO L231 Difference]: Finished difference. Result has 335 places, 408 transitions, 4561 flow [2024-06-20 16:00:56,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4213, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4561, PETRI_PLACES=335, PETRI_TRANSITIONS=408} [2024-06-20 16:00:56,564 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 291 predicate places. [2024-06-20 16:00:56,564 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 408 transitions, 4561 flow [2024-06-20 16:00:56,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:56,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:00:56,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:00:56,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 16:00:56,565 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:00:56,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:00:56,565 INFO L85 PathProgramCache]: Analyzing trace with hash -748876958, now seen corresponding path program 4 times [2024-06-20 16:00:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:00:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872577444] [2024-06-20 16:00:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:00:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:00:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:00:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:00:57,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:00:57,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872577444] [2024-06-20 16:00:57,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872577444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:00:57,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:00:57,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:00:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854647638] [2024-06-20 16:00:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:00:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:00:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:00:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:00:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:00:57,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:00:57,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 408 transitions, 4561 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:00:57,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:00:57,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:00:57,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:00:59,725 INFO L124 PetriNetUnfolderBase]: 3628/5818 cut-off events. [2024-06-20 16:00:59,726 INFO L125 PetriNetUnfolderBase]: For 1287173/1287173 co-relation queries the response was YES. [2024-06-20 16:00:59,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61746 conditions, 5818 events. 3628/5818 cut-off events. For 1287173/1287173 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 35378 event pairs, 723 based on Foata normal form. 12/5828 useless extension candidates. Maximal degree in co-relation 61597. Up to 4351 conditions per place. [2024-06-20 16:00:59,814 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 340 selfloop transitions, 114 changer transitions 0/459 dead transitions. [2024-06-20 16:00:59,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 459 transitions, 5767 flow [2024-06-20 16:00:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:00:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:00:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-20 16:00:59,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693446088794926 [2024-06-20 16:00:59,816 INFO L175 Difference]: Start difference. First operand has 335 places, 408 transitions, 4561 flow. Second operand 11 states and 222 transitions. [2024-06-20 16:00:59,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 459 transitions, 5767 flow [2024-06-20 16:01:01,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 459 transitions, 5508 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-20 16:01:01,898 INFO L231 Difference]: Finished difference. Result has 340 places, 409 transitions, 4628 flow [2024-06-20 16:01:01,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4628, PETRI_PLACES=340, PETRI_TRANSITIONS=409} [2024-06-20 16:01:01,898 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 296 predicate places. [2024-06-20 16:01:01,898 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 409 transitions, 4628 flow [2024-06-20 16:01:01,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:01,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:01,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 16:01:01,898 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:01,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1021094590, now seen corresponding path program 1 times [2024-06-20 16:01:01,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:01,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29955850] [2024-06-20 16:01:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:03,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:03,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29955850] [2024-06-20 16:01:03,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29955850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:03,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:03,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:01:03,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534775936] [2024-06-20 16:01:03,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:03,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:01:03,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:03,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:01:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:01:03,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:03,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 409 transitions, 4628 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:03,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:03,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:03,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:04,556 INFO L124 PetriNetUnfolderBase]: 3423/5587 cut-off events. [2024-06-20 16:01:04,556 INFO L125 PetriNetUnfolderBase]: For 1258842/1258842 co-relation queries the response was YES. [2024-06-20 16:01:04,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60028 conditions, 5587 events. 3423/5587 cut-off events. For 1258842/1258842 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 34746 event pairs, 715 based on Foata normal form. 2/5567 useless extension candidates. Maximal degree in co-relation 59878. Up to 5026 conditions per place. [2024-06-20 16:01:04,646 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 379 selfloop transitions, 22 changer transitions 0/442 dead transitions. [2024-06-20 16:01:04,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 442 transitions, 5590 flow [2024-06-20 16:01:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:01:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:01:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-20 16:01:04,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-20 16:01:04,647 INFO L175 Difference]: Start difference. First operand has 340 places, 409 transitions, 4628 flow. Second operand 9 states and 175 transitions. [2024-06-20 16:01:04,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 442 transitions, 5590 flow [2024-06-20 16:01:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 442 transitions, 5282 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-20 16:01:06,496 INFO L231 Difference]: Finished difference. Result has 340 places, 412 transitions, 4460 flow [2024-06-20 16:01:06,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4460, PETRI_PLACES=340, PETRI_TRANSITIONS=412} [2024-06-20 16:01:06,496 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 296 predicate places. [2024-06-20 16:01:06,496 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 412 transitions, 4460 flow [2024-06-20 16:01:06,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:06,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:06,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 16:01:06,497 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:06,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:06,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1625109580, now seen corresponding path program 2 times [2024-06-20 16:01:06,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:06,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653595089] [2024-06-20 16:01:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:06,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:07,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:07,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653595089] [2024-06-20 16:01:07,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653595089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:07,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:07,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:01:07,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111963724] [2024-06-20 16:01:07,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:07,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:01:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:01:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:01:07,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:07,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 412 transitions, 4460 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:07,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:07,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:07,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:09,078 INFO L124 PetriNetUnfolderBase]: 3438/5615 cut-off events. [2024-06-20 16:01:09,079 INFO L125 PetriNetUnfolderBase]: For 1292680/1292704 co-relation queries the response was YES. [2024-06-20 16:01:09,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60520 conditions, 5615 events. 3438/5615 cut-off events. For 1292680/1292704 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 35046 event pairs, 716 based on Foata normal form. 6/5589 useless extension candidates. Maximal degree in co-relation 60369. Up to 5029 conditions per place. [2024-06-20 16:01:09,161 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 367 selfloop transitions, 35 changer transitions 0/443 dead transitions. [2024-06-20 16:01:09,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 443 transitions, 5724 flow [2024-06-20 16:01:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:01:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:01:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 16:01:09,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-20 16:01:09,162 INFO L175 Difference]: Start difference. First operand has 340 places, 412 transitions, 4460 flow. Second operand 9 states and 173 transitions. [2024-06-20 16:01:09,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 443 transitions, 5724 flow [2024-06-20 16:01:11,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 443 transitions, 5606 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 16:01:11,406 INFO L231 Difference]: Finished difference. Result has 342 places, 418 transitions, 4604 flow [2024-06-20 16:01:11,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4342, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4604, PETRI_PLACES=342, PETRI_TRANSITIONS=418} [2024-06-20 16:01:11,407 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 298 predicate places. [2024-06-20 16:01:11,407 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 418 transitions, 4604 flow [2024-06-20 16:01:11,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:11,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:11,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:11,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 16:01:11,407 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:11,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:11,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1010905076, now seen corresponding path program 1 times [2024-06-20 16:01:11,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:11,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464749437] [2024-06-20 16:01:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:11,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:12,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:12,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464749437] [2024-06-20 16:01:12,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464749437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:12,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:12,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:01:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47510258] [2024-06-20 16:01:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:12,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:01:12,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:01:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:01:12,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:12,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 418 transitions, 4604 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:12,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:12,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:12,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:13,875 INFO L124 PetriNetUnfolderBase]: 3448/5627 cut-off events. [2024-06-20 16:01:13,875 INFO L125 PetriNetUnfolderBase]: For 1319932/1319956 co-relation queries the response was YES. [2024-06-20 16:01:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61249 conditions, 5627 events. 3448/5627 cut-off events. For 1319932/1319956 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 35106 event pairs, 715 based on Foata normal form. 2/5597 useless extension candidates. Maximal degree in co-relation 61097. Up to 5075 conditions per place. [2024-06-20 16:01:13,963 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 385 selfloop transitions, 20 changer transitions 0/446 dead transitions. [2024-06-20 16:01:13,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 446 transitions, 5600 flow [2024-06-20 16:01:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:01:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:01:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:01:13,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-20 16:01:13,964 INFO L175 Difference]: Start difference. First operand has 342 places, 418 transitions, 4604 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:01:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 446 transitions, 5600 flow [2024-06-20 16:01:16,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 446 transitions, 5475 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-20 16:01:16,601 INFO L231 Difference]: Finished difference. Result has 346 places, 421 transitions, 4643 flow [2024-06-20 16:01:16,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4479, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4643, PETRI_PLACES=346, PETRI_TRANSITIONS=421} [2024-06-20 16:01:16,602 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 302 predicate places. [2024-06-20 16:01:16,602 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 421 transitions, 4643 flow [2024-06-20 16:01:16,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:16,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:16,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 16:01:16,602 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:16,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1010917600, now seen corresponding path program 3 times [2024-06-20 16:01:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:16,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134385941] [2024-06-20 16:01:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:17,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:17,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134385941] [2024-06-20 16:01:17,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134385941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:17,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:17,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:01:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152593310] [2024-06-20 16:01:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:17,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:01:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:01:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:01:17,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:17,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 421 transitions, 4643 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:17,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:17,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:17,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:19,295 INFO L124 PetriNetUnfolderBase]: 3444/5620 cut-off events. [2024-06-20 16:01:19,295 INFO L125 PetriNetUnfolderBase]: For 1328499/1328523 co-relation queries the response was YES. [2024-06-20 16:01:19,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61381 conditions, 5620 events. 3444/5620 cut-off events. For 1328499/1328523 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 35066 event pairs, 714 based on Foata normal form. 5/5594 useless extension candidates. Maximal degree in co-relation 61227. Up to 5052 conditions per place. [2024-06-20 16:01:19,384 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 377 selfloop transitions, 27 changer transitions 0/445 dead transitions. [2024-06-20 16:01:19,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 445 transitions, 5511 flow [2024-06-20 16:01:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:01:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:01:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:01:19,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:01:19,385 INFO L175 Difference]: Start difference. First operand has 346 places, 421 transitions, 4643 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:01:19,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 445 transitions, 5511 flow [2024-06-20 16:01:21,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 445 transitions, 5311 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-20 16:01:21,514 INFO L231 Difference]: Finished difference. Result has 348 places, 421 transitions, 4503 flow [2024-06-20 16:01:21,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4503, PETRI_PLACES=348, PETRI_TRANSITIONS=421} [2024-06-20 16:01:21,514 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 304 predicate places. [2024-06-20 16:01:21,514 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 421 transitions, 4503 flow [2024-06-20 16:01:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:01:21,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:21,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:21,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 16:01:21,514 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:21,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:21,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1457987464, now seen corresponding path program 1 times [2024-06-20 16:01:21,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:21,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782233242] [2024-06-20 16:01:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:21,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782233242] [2024-06-20 16:01:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782233242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:22,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:22,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:22,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094288700] [2024-06-20 16:01:22,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:22,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:22,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:22,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:22,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 421 transitions, 4503 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:22,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:22,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:22,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:23,879 INFO L124 PetriNetUnfolderBase]: 3463/5638 cut-off events. [2024-06-20 16:01:23,879 INFO L125 PetriNetUnfolderBase]: For 1331773/1331773 co-relation queries the response was YES. [2024-06-20 16:01:23,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61704 conditions, 5638 events. 3463/5638 cut-off events. For 1331773/1331773 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 35056 event pairs, 698 based on Foata normal form. 1/5595 useless extension candidates. Maximal degree in co-relation 61549. Up to 5095 conditions per place. [2024-06-20 16:01:23,964 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 379 selfloop transitions, 29 changer transitions 0/447 dead transitions. [2024-06-20 16:01:23,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 447 transitions, 5487 flow [2024-06-20 16:01:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-20 16:01:23,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-20 16:01:23,965 INFO L175 Difference]: Start difference. First operand has 348 places, 421 transitions, 4503 flow. Second operand 8 states and 158 transitions. [2024-06-20 16:01:23,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 447 transitions, 5487 flow [2024-06-20 16:01:26,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 447 transitions, 5411 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 16:01:26,597 INFO L231 Difference]: Finished difference. Result has 348 places, 424 transitions, 4607 flow [2024-06-20 16:01:26,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4607, PETRI_PLACES=348, PETRI_TRANSITIONS=424} [2024-06-20 16:01:26,597 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 304 predicate places. [2024-06-20 16:01:26,597 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 424 transitions, 4607 flow [2024-06-20 16:01:26,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:26,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:26,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:26,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 16:01:26,598 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:26,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1953756514, now seen corresponding path program 3 times [2024-06-20 16:01:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:26,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161903212] [2024-06-20 16:01:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:27,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161903212] [2024-06-20 16:01:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161903212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:27,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:27,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:27,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552639627] [2024-06-20 16:01:27,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:27,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:27,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:27,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:01:27,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 424 transitions, 4607 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:27,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:27,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:01:27,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:28,862 INFO L124 PetriNetUnfolderBase]: 3683/5900 cut-off events. [2024-06-20 16:01:28,862 INFO L125 PetriNetUnfolderBase]: For 1368515/1368517 co-relation queries the response was YES. [2024-06-20 16:01:28,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63846 conditions, 5900 events. 3683/5900 cut-off events. For 1368515/1368517 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 35924 event pairs, 744 based on Foata normal form. 4/5903 useless extension candidates. Maximal degree in co-relation 63690. Up to 5551 conditions per place. [2024-06-20 16:01:28,953 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 417 selfloop transitions, 29 changer transitions 0/451 dead transitions. [2024-06-20 16:01:28,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 451 transitions, 5679 flow [2024-06-20 16:01:28,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:01:28,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:01:28,954 INFO L175 Difference]: Start difference. First operand has 348 places, 424 transitions, 4607 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:01:28,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 451 transitions, 5679 flow [2024-06-20 16:01:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 451 transitions, 5521 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-20 16:01:31,013 INFO L231 Difference]: Finished difference. Result has 350 places, 427 transitions, 4619 flow [2024-06-20 16:01:31,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4619, PETRI_PLACES=350, PETRI_TRANSITIONS=427} [2024-06-20 16:01:31,013 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 306 predicate places. [2024-06-20 16:01:31,013 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 427 transitions, 4619 flow [2024-06-20 16:01:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:31,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:31,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:31,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 16:01:31,014 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:31,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:31,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1457983062, now seen corresponding path program 4 times [2024-06-20 16:01:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:31,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598528907] [2024-06-20 16:01:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598528907] [2024-06-20 16:01:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598528907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:31,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:31,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374742586] [2024-06-20 16:01:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:31,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:31,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:31,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:01:31,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 427 transitions, 4619 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:31,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:31,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:01:31,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:33,294 INFO L124 PetriNetUnfolderBase]: 3693/5924 cut-off events. [2024-06-20 16:01:33,294 INFO L125 PetriNetUnfolderBase]: For 1394585/1394587 co-relation queries the response was YES. [2024-06-20 16:01:33,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64230 conditions, 5924 events. 3693/5924 cut-off events. For 1394585/1394587 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 36253 event pairs, 754 based on Foata normal form. 4/5927 useless extension candidates. Maximal degree in co-relation 64073. Up to 5545 conditions per place. [2024-06-20 16:01:33,381 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 410 selfloop transitions, 37 changer transitions 0/452 dead transitions. [2024-06-20 16:01:33,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 452 transitions, 5731 flow [2024-06-20 16:01:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:01:33,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 16:01:33,382 INFO L175 Difference]: Start difference. First operand has 350 places, 427 transitions, 4619 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:01:33,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 452 transitions, 5731 flow [2024-06-20 16:01:35,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 452 transitions, 5593 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-20 16:01:35,729 INFO L231 Difference]: Finished difference. Result has 352 places, 430 transitions, 4691 flow [2024-06-20 16:01:35,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4481, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4691, PETRI_PLACES=352, PETRI_TRANSITIONS=430} [2024-06-20 16:01:35,730 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 308 predicate places. [2024-06-20 16:01:35,730 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 430 transitions, 4691 flow [2024-06-20 16:01:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:35,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:35,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:35,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 16:01:35,730 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:35,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1953398030, now seen corresponding path program 1 times [2024-06-20 16:01:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711925665] [2024-06-20 16:01:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711925665] [2024-06-20 16:01:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711925665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:36,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:36,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:36,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820685136] [2024-06-20 16:01:36,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:36,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:36,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:36,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:36,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 430 transitions, 4691 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:36,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:36,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:36,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:38,143 INFO L124 PetriNetUnfolderBase]: 3489/5681 cut-off events. [2024-06-20 16:01:38,143 INFO L125 PetriNetUnfolderBase]: For 1414701/1414703 co-relation queries the response was YES. [2024-06-20 16:01:38,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63417 conditions, 5681 events. 3489/5681 cut-off events. For 1414701/1414703 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 35403 event pairs, 693 based on Foata normal form. 4/5642 useless extension candidates. Maximal degree in co-relation 63259. Up to 5156 conditions per place. [2024-06-20 16:01:38,229 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 391 selfloop transitions, 23 changer transitions 0/455 dead transitions. [2024-06-20 16:01:38,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 455 transitions, 5709 flow [2024-06-20 16:01:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-20 16:01:38,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-20 16:01:38,230 INFO L175 Difference]: Start difference. First operand has 352 places, 430 transitions, 4691 flow. Second operand 8 states and 155 transitions. [2024-06-20 16:01:38,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 455 transitions, 5709 flow [2024-06-20 16:01:40,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 455 transitions, 5527 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-20 16:01:40,400 INFO L231 Difference]: Finished difference. Result has 354 places, 434 transitions, 4688 flow [2024-06-20 16:01:40,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4509, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4688, PETRI_PLACES=354, PETRI_TRANSITIONS=434} [2024-06-20 16:01:40,401 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 310 predicate places. [2024-06-20 16:01:40,401 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 434 transitions, 4688 flow [2024-06-20 16:01:40,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:40,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:40,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:40,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 16:01:40,402 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:40,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -666826962, now seen corresponding path program 5 times [2024-06-20 16:01:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860841688] [2024-06-20 16:01:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:41,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860841688] [2024-06-20 16:01:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860841688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:41,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432504242] [2024-06-20 16:01:41,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:41,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:41,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:01:41,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 434 transitions, 4688 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:41,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:41,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:01:41,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:42,746 INFO L124 PetriNetUnfolderBase]: 3729/5976 cut-off events. [2024-06-20 16:01:42,746 INFO L125 PetriNetUnfolderBase]: For 1462112/1462114 co-relation queries the response was YES. [2024-06-20 16:01:42,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66351 conditions, 5976 events. 3729/5976 cut-off events. For 1462112/1462114 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 36540 event pairs, 753 based on Foata normal form. 4/5979 useless extension candidates. Maximal degree in co-relation 66192. Up to 5538 conditions per place. [2024-06-20 16:01:42,834 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 397 selfloop transitions, 60 changer transitions 0/462 dead transitions. [2024-06-20 16:01:42,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 462 transitions, 6448 flow [2024-06-20 16:01:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:01:42,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:01:42,835 INFO L175 Difference]: Start difference. First operand has 354 places, 434 transitions, 4688 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:01:42,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 462 transitions, 6448 flow [2024-06-20 16:01:45,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 462 transitions, 6297 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-20 16:01:45,013 INFO L231 Difference]: Finished difference. Result has 356 places, 440 transitions, 4933 flow [2024-06-20 16:01:45,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4933, PETRI_PLACES=356, PETRI_TRANSITIONS=440} [2024-06-20 16:01:45,013 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 312 predicate places. [2024-06-20 16:01:45,013 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 440 transitions, 4933 flow [2024-06-20 16:01:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:45,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:45,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:45,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 16:01:45,014 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:45,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:45,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1280613958, now seen corresponding path program 2 times [2024-06-20 16:01:45,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:45,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965282531] [2024-06-20 16:01:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:45,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:46,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965282531] [2024-06-20 16:01:46,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965282531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:46,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:46,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:46,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268377273] [2024-06-20 16:01:46,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:46,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:46,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 440 transitions, 4933 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:46,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:46,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:46,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:47,469 INFO L124 PetriNetUnfolderBase]: 3532/5746 cut-off events. [2024-06-20 16:01:47,469 INFO L125 PetriNetUnfolderBase]: For 1493811/1493813 co-relation queries the response was YES. [2024-06-20 16:01:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65980 conditions, 5746 events. 3532/5746 cut-off events. For 1493811/1493813 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 35866 event pairs, 694 based on Foata normal form. 3/5706 useless extension candidates. Maximal degree in co-relation 65820. Up to 5178 conditions per place. [2024-06-20 16:01:47,560 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 383 selfloop transitions, 40 changer transitions 0/466 dead transitions. [2024-06-20 16:01:47,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 466 transitions, 6289 flow [2024-06-20 16:01:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-20 16:01:47,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-20 16:01:47,561 INFO L175 Difference]: Start difference. First operand has 356 places, 440 transitions, 4933 flow. Second operand 8 states and 155 transitions. [2024-06-20 16:01:47,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 466 transitions, 6289 flow [2024-06-20 16:01:49,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 466 transitions, 6051 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-20 16:01:49,507 INFO L231 Difference]: Finished difference. Result has 360 places, 447 transitions, 5014 flow [2024-06-20 16:01:49,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4697, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5014, PETRI_PLACES=360, PETRI_TRANSITIONS=447} [2024-06-20 16:01:49,507 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 316 predicate places. [2024-06-20 16:01:49,507 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 447 transitions, 5014 flow [2024-06-20 16:01:49,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:49,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:49,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:49,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 16:01:49,508 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:49,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1280851108, now seen corresponding path program 3 times [2024-06-20 16:01:49,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:49,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219755121] [2024-06-20 16:01:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:50,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:50,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219755121] [2024-06-20 16:01:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219755121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:50,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579362299] [2024-06-20 16:01:50,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:50,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:50,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:50,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:01:50,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 447 transitions, 5014 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:50,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:50,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:01:50,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:51,968 INFO L124 PetriNetUnfolderBase]: 3542/5760 cut-off events. [2024-06-20 16:01:51,968 INFO L125 PetriNetUnfolderBase]: For 1527198/1527200 co-relation queries the response was YES. [2024-06-20 16:01:52,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66715 conditions, 5760 events. 3542/5760 cut-off events. For 1527198/1527200 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 35934 event pairs, 694 based on Foata normal form. 4/5721 useless extension candidates. Maximal degree in co-relation 66553. Up to 5210 conditions per place. [2024-06-20 16:01:52,064 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 396 selfloop transitions, 31 changer transitions 0/470 dead transitions. [2024-06-20 16:01:52,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 470 transitions, 6104 flow [2024-06-20 16:01:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:52,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 16:01:52,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-20 16:01:52,210 INFO L175 Difference]: Start difference. First operand has 360 places, 447 transitions, 5014 flow. Second operand 8 states and 154 transitions. [2024-06-20 16:01:52,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 470 transitions, 6104 flow [2024-06-20 16:01:54,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 470 transitions, 5918 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-20 16:01:54,663 INFO L231 Difference]: Finished difference. Result has 364 places, 451 transitions, 5043 flow [2024-06-20 16:01:54,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5043, PETRI_PLACES=364, PETRI_TRANSITIONS=451} [2024-06-20 16:01:54,664 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 320 predicate places. [2024-06-20 16:01:54,664 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 451 transitions, 5043 flow [2024-06-20 16:01:54,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:54,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:54,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:54,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 16:01:54,664 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:54,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash -666647472, now seen corresponding path program 6 times [2024-06-20 16:01:54,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:54,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138949366] [2024-06-20 16:01:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:54,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:01:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:01:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:01:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138949366] [2024-06-20 16:01:55,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138949366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:01:55,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:01:55,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:01:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155699223] [2024-06-20 16:01:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:01:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:01:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:01:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:01:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:01:55,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:01:55,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 451 transitions, 5043 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:55,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:01:55,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:01:55,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:01:57,177 INFO L124 PetriNetUnfolderBase]: 3770/6025 cut-off events. [2024-06-20 16:01:57,177 INFO L125 PetriNetUnfolderBase]: For 1557288/1557290 co-relation queries the response was YES. [2024-06-20 16:01:57,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68549 conditions, 6025 events. 3770/6025 cut-off events. For 1557288/1557290 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 36805 event pairs, 748 based on Foata normal form. 4/6028 useless extension candidates. Maximal degree in co-relation 68385. Up to 5591 conditions per place. [2024-06-20 16:01:57,260 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 408 selfloop transitions, 62 changer transitions 0/475 dead transitions. [2024-06-20 16:01:57,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 475 transitions, 6463 flow [2024-06-20 16:01:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:01:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:01:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:01:57,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 16:01:57,261 INFO L175 Difference]: Start difference. First operand has 364 places, 451 transitions, 5043 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:01:57,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 475 transitions, 6463 flow [2024-06-20 16:01:59,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 475 transitions, 6328 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-20 16:01:59,349 INFO L231 Difference]: Finished difference. Result has 366 places, 454 transitions, 5152 flow [2024-06-20 16:01:59,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4908, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5152, PETRI_PLACES=366, PETRI_TRANSITIONS=454} [2024-06-20 16:01:59,350 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 322 predicate places. [2024-06-20 16:01:59,350 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 454 transitions, 5152 flow [2024-06-20 16:01:59,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:01:59,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:01:59,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:01:59,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 16:01:59,351 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:01:59,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:01:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash -159585604, now seen corresponding path program 5 times [2024-06-20 16:01:59,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:01:59,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462934235] [2024-06-20 16:01:59,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:01:59,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:01:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:00,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:00,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462934235] [2024-06-20 16:02:00,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462934235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:00,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:00,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:02:00,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966807525] [2024-06-20 16:02:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:00,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:02:00,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:00,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:02:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:02:00,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:02:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 454 transitions, 5152 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:00,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:02:00,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:02,383 INFO L124 PetriNetUnfolderBase]: 3880/6224 cut-off events. [2024-06-20 16:02:02,383 INFO L125 PetriNetUnfolderBase]: For 1636606/1636606 co-relation queries the response was YES. [2024-06-20 16:02:02,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70284 conditions, 6224 events. 3880/6224 cut-off events. For 1636606/1636606 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 38542 event pairs, 764 based on Foata normal form. 12/6234 useless extension candidates. Maximal degree in co-relation 70119. Up to 5290 conditions per place. [2024-06-20 16:02:02,477 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 398 selfloop transitions, 103 changer transitions 0/506 dead transitions. [2024-06-20 16:02:02,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 506 transitions, 6531 flow [2024-06-20 16:02:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:02:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:02:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-20 16:02:02,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46723044397463004 [2024-06-20 16:02:02,478 INFO L175 Difference]: Start difference. First operand has 366 places, 454 transitions, 5152 flow. Second operand 11 states and 221 transitions. [2024-06-20 16:02:02,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 506 transitions, 6531 flow [2024-06-20 16:02:04,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 506 transitions, 6351 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-20 16:02:04,804 INFO L231 Difference]: Finished difference. Result has 374 places, 460 transitions, 5366 flow [2024-06-20 16:02:04,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5366, PETRI_PLACES=374, PETRI_TRANSITIONS=460} [2024-06-20 16:02:04,805 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2024-06-20 16:02:04,805 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 460 transitions, 5366 flow [2024-06-20 16:02:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:04,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:04,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:04,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 16:02:04,805 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:04,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:04,805 INFO L85 PathProgramCache]: Analyzing trace with hash -602647806, now seen corresponding path program 6 times [2024-06-20 16:02:04,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055046930] [2024-06-20 16:02:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055046930] [2024-06-20 16:02:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055046930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:06,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:06,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:02:06,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611250431] [2024-06-20 16:02:06,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:06,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:02:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:02:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:02:06,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:02:06,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 460 transitions, 5366 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:06,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:06,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:02:06,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:08,239 INFO L124 PetriNetUnfolderBase]: 3990/6434 cut-off events. [2024-06-20 16:02:08,239 INFO L125 PetriNetUnfolderBase]: For 1681555/1681555 co-relation queries the response was YES. [2024-06-20 16:02:08,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72475 conditions, 6434 events. 3990/6434 cut-off events. For 1681555/1681555 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40483 event pairs, 794 based on Foata normal form. 12/6444 useless extension candidates. Maximal degree in co-relation 72307. Up to 5471 conditions per place. [2024-06-20 16:02:08,346 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 396 selfloop transitions, 112 changer transitions 0/513 dead transitions. [2024-06-20 16:02:08,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 513 transitions, 6764 flow [2024-06-20 16:02:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:02:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:02:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-20 16:02:08,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-20 16:02:08,348 INFO L175 Difference]: Start difference. First operand has 374 places, 460 transitions, 5366 flow. Second operand 11 states and 220 transitions. [2024-06-20 16:02:08,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 513 transitions, 6764 flow [2024-06-20 16:02:10,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 513 transitions, 6473 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-20 16:02:10,753 INFO L231 Difference]: Finished difference. Result has 380 places, 467 transitions, 5475 flow [2024-06-20 16:02:10,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5080, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5475, PETRI_PLACES=380, PETRI_TRANSITIONS=467} [2024-06-20 16:02:10,754 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2024-06-20 16:02:10,754 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 467 transitions, 5475 flow [2024-06-20 16:02:10,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:10,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:10,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:10,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 16:02:10,754 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:10,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1677175236, now seen corresponding path program 7 times [2024-06-20 16:02:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:10,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479297703] [2024-06-20 16:02:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:10,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:11,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479297703] [2024-06-20 16:02:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479297703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:11,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:11,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:02:11,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086704626] [2024-06-20 16:02:11,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:11,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:02:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:02:11,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:02:12,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:02:12,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 467 transitions, 5475 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:12,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:12,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:02:12,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:13,923 INFO L124 PetriNetUnfolderBase]: 4031/6505 cut-off events. [2024-06-20 16:02:13,924 INFO L125 PetriNetUnfolderBase]: For 1709303/1709303 co-relation queries the response was YES. [2024-06-20 16:02:14,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73088 conditions, 6505 events. 4031/6505 cut-off events. For 1709303/1709303 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 41040 event pairs, 799 based on Foata normal form. 12/6515 useless extension candidates. Maximal degree in co-relation 72918. Up to 5432 conditions per place. [2024-06-20 16:02:14,034 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 395 selfloop transitions, 115 changer transitions 0/515 dead transitions. [2024-06-20 16:02:14,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 515 transitions, 6815 flow [2024-06-20 16:02:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:02:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:02:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-20 16:02:14,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693446088794926 [2024-06-20 16:02:14,035 INFO L175 Difference]: Start difference. First operand has 380 places, 467 transitions, 5475 flow. Second operand 11 states and 222 transitions. [2024-06-20 16:02:14,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 515 transitions, 6815 flow [2024-06-20 16:02:17,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 515 transitions, 6588 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-20 16:02:17,260 INFO L231 Difference]: Finished difference. Result has 386 places, 468 transitions, 5582 flow [2024-06-20 16:02:17,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5582, PETRI_PLACES=386, PETRI_TRANSITIONS=468} [2024-06-20 16:02:17,260 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 342 predicate places. [2024-06-20 16:02:17,260 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 468 transitions, 5582 flow [2024-06-20 16:02:17,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:17,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:17,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:17,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 16:02:17,261 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:17,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1109140706, now seen corresponding path program 8 times [2024-06-20 16:02:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:17,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459874032] [2024-06-20 16:02:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:18,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459874032] [2024-06-20 16:02:18,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459874032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:18,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:18,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:02:18,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505282448] [2024-06-20 16:02:18,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:18,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:02:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:02:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:02:18,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:02:18,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 468 transitions, 5582 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:18,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:18,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:02:18,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:20,463 INFO L124 PetriNetUnfolderBase]: 4113/6667 cut-off events. [2024-06-20 16:02:20,463 INFO L125 PetriNetUnfolderBase]: For 1741591/1741591 co-relation queries the response was YES. [2024-06-20 16:02:20,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74268 conditions, 6667 events. 4113/6667 cut-off events. For 1741591/1741591 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 42579 event pairs, 834 based on Foata normal form. 12/6677 useless extension candidates. Maximal degree in co-relation 74097. Up to 5684 conditions per place. [2024-06-20 16:02:20,562 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 404 selfloop transitions, 107 changer transitions 0/516 dead transitions. [2024-06-20 16:02:20,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 516 transitions, 6946 flow [2024-06-20 16:02:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:02:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:02:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-20 16:02:20,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-06-20 16:02:20,563 INFO L175 Difference]: Start difference. First operand has 386 places, 468 transitions, 5582 flow. Second operand 11 states and 223 transitions. [2024-06-20 16:02:20,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 516 transitions, 6946 flow [2024-06-20 16:02:23,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 516 transitions, 6630 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-20 16:02:23,724 INFO L231 Difference]: Finished difference. Result has 389 places, 470 transitions, 5616 flow [2024-06-20 16:02:23,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5266, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5616, PETRI_PLACES=389, PETRI_TRANSITIONS=470} [2024-06-20 16:02:23,724 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 345 predicate places. [2024-06-20 16:02:23,724 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 470 transitions, 5616 flow [2024-06-20 16:02:23,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:23,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:23,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:23,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 16:02:23,725 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:23,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash 41763116, now seen corresponding path program 9 times [2024-06-20 16:02:23,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:23,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523405165] [2024-06-20 16:02:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:24,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:24,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523405165] [2024-06-20 16:02:24,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523405165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:24,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:24,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:02:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762006468] [2024-06-20 16:02:24,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:24,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:02:24,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:24,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:02:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:02:25,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:02:25,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 470 transitions, 5616 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:25,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:25,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:02:25,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:26,925 INFO L124 PetriNetUnfolderBase]: 4154/6748 cut-off events. [2024-06-20 16:02:26,925 INFO L125 PetriNetUnfolderBase]: For 1769936/1769936 co-relation queries the response was YES. [2024-06-20 16:02:27,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74827 conditions, 6748 events. 4154/6748 cut-off events. For 1769936/1769936 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 43312 event pairs, 844 based on Foata normal form. 12/6758 useless extension candidates. Maximal degree in co-relation 74654. Up to 5466 conditions per place. [2024-06-20 16:02:27,036 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 400 selfloop transitions, 113 changer transitions 0/518 dead transitions. [2024-06-20 16:02:27,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 518 transitions, 6966 flow [2024-06-20 16:02:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:02:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:02:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-20 16:02:27,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-06-20 16:02:27,038 INFO L175 Difference]: Start difference. First operand has 389 places, 470 transitions, 5616 flow. Second operand 11 states and 223 transitions. [2024-06-20 16:02:27,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 518 transitions, 6966 flow [2024-06-20 16:02:30,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 518 transitions, 6644 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-20 16:02:30,399 INFO L231 Difference]: Finished difference. Result has 393 places, 471 transitions, 5628 flow [2024-06-20 16:02:30,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5294, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5628, PETRI_PLACES=393, PETRI_TRANSITIONS=471} [2024-06-20 16:02:30,399 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 349 predicate places. [2024-06-20 16:02:30,399 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 471 transitions, 5628 flow [2024-06-20 16:02:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:30,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:30,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:30,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 16:02:30,400 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:30,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1418887266, now seen corresponding path program 10 times [2024-06-20 16:02:30,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:30,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306649639] [2024-06-20 16:02:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:30,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:31,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:31,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306649639] [2024-06-20 16:02:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306649639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:31,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:02:31,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619350902] [2024-06-20 16:02:31,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:02:31,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:31,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:02:31,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:02:31,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:02:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 471 transitions, 5628 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:31,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:31,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:02:31,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:33,464 INFO L124 PetriNetUnfolderBase]: 4195/6829 cut-off events. [2024-06-20 16:02:33,464 INFO L125 PetriNetUnfolderBase]: For 1799918/1799918 co-relation queries the response was YES. [2024-06-20 16:02:33,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75399 conditions, 6829 events. 4195/6829 cut-off events. For 1799918/1799918 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 43973 event pairs, 846 based on Foata normal form. 12/6839 useless extension candidates. Maximal degree in co-relation 75225. Up to 4376 conditions per place. [2024-06-20 16:02:33,577 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 374 selfloop transitions, 141 changer transitions 0/520 dead transitions. [2024-06-20 16:02:33,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 520 transitions, 6986 flow [2024-06-20 16:02:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:02:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:02:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-20 16:02:33,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46723044397463004 [2024-06-20 16:02:33,578 INFO L175 Difference]: Start difference. First operand has 393 places, 471 transitions, 5628 flow. Second operand 11 states and 221 transitions. [2024-06-20 16:02:33,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 520 transitions, 6986 flow [2024-06-20 16:02:37,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 520 transitions, 6670 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-20 16:02:37,171 INFO L231 Difference]: Finished difference. Result has 395 places, 472 transitions, 5704 flow [2024-06-20 16:02:37,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5312, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5704, PETRI_PLACES=395, PETRI_TRANSITIONS=472} [2024-06-20 16:02:37,172 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2024-06-20 16:02:37,172 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 472 transitions, 5704 flow [2024-06-20 16:02:37,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:02:37,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:37,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:37,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 16:02:37,173 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:37,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:37,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1280619910, now seen corresponding path program 4 times [2024-06-20 16:02:37,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:37,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699431568] [2024-06-20 16:02:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:37,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:38,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699431568] [2024-06-20 16:02:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699431568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:38,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:02:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135037614] [2024-06-20 16:02:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:02:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:02:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:02:38,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:02:38,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 472 transitions, 5704 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:02:38,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:38,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:02:38,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:40,226 INFO L124 PetriNetUnfolderBase]: 3922/6513 cut-off events. [2024-06-20 16:02:40,226 INFO L125 PetriNetUnfolderBase]: For 1794524/1794552 co-relation queries the response was YES. [2024-06-20 16:02:40,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74149 conditions, 6513 events. 3922/6513 cut-off events. For 1794524/1794552 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 43179 event pairs, 825 based on Foata normal form. 10/6470 useless extension candidates. Maximal degree in co-relation 73974. Up to 5820 conditions per place. [2024-06-20 16:02:40,342 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 402 selfloop transitions, 54 changer transitions 0/497 dead transitions. [2024-06-20 16:02:40,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 497 transitions, 7118 flow [2024-06-20 16:02:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:02:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:02:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-20 16:02:40,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-20 16:02:40,343 INFO L175 Difference]: Start difference. First operand has 395 places, 472 transitions, 5704 flow. Second operand 9 states and 170 transitions. [2024-06-20 16:02:40,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 497 transitions, 7118 flow [2024-06-20 16:02:43,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 497 transitions, 6744 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-20 16:02:43,614 INFO L231 Difference]: Finished difference. Result has 395 places, 478 transitions, 5654 flow [2024-06-20 16:02:43,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5330, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5654, PETRI_PLACES=395, PETRI_TRANSITIONS=478} [2024-06-20 16:02:43,615 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2024-06-20 16:02:43,615 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 478 transitions, 5654 flow [2024-06-20 16:02:43,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:02:43,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:43,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:43,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 16:02:43,616 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:43,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash 384206090, now seen corresponding path program 2 times [2024-06-20 16:02:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:43,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300892815] [2024-06-20 16:02:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:43,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:44,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300892815] [2024-06-20 16:02:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300892815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:44,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:44,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:02:44,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540178335] [2024-06-20 16:02:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:44,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:02:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:44,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:02:44,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:02:44,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:02:44,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 478 transitions, 5654 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:02:44,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:44,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:02:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:46,467 INFO L124 PetriNetUnfolderBase]: 3968/6577 cut-off events. [2024-06-20 16:02:46,467 INFO L125 PetriNetUnfolderBase]: For 1848196/1848224 co-relation queries the response was YES. [2024-06-20 16:02:46,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75264 conditions, 6577 events. 3968/6577 cut-off events. For 1848196/1848224 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 43560 event pairs, 828 based on Foata normal form. 2/6526 useless extension candidates. Maximal degree in co-relation 75088. Up to 5893 conditions per place. [2024-06-20 16:02:46,572 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 427 selfloop transitions, 42 changer transitions 0/510 dead transitions. [2024-06-20 16:02:46,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 510 transitions, 7556 flow [2024-06-20 16:02:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:02:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:02:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 16:02:46,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-20 16:02:46,573 INFO L175 Difference]: Start difference. First operand has 395 places, 478 transitions, 5654 flow. Second operand 9 states and 173 transitions. [2024-06-20 16:02:46,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 510 transitions, 7556 flow [2024-06-20 16:02:49,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 510 transitions, 7403 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-20 16:02:49,495 INFO L231 Difference]: Finished difference. Result has 399 places, 487 transitions, 5963 flow [2024-06-20 16:02:49,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5507, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5963, PETRI_PLACES=399, PETRI_TRANSITIONS=487} [2024-06-20 16:02:49,495 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2024-06-20 16:02:49,495 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 487 transitions, 5963 flow [2024-06-20 16:02:49,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:02:49,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:49,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:49,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 16:02:49,496 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:49,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:49,496 INFO L85 PathProgramCache]: Analyzing trace with hash 383789946, now seen corresponding path program 5 times [2024-06-20 16:02:49,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699580866] [2024-06-20 16:02:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:50,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:50,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699580866] [2024-06-20 16:02:50,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699580866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:50,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:50,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:02:50,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999143721] [2024-06-20 16:02:50,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:50,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:02:50,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:02:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:02:50,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:02:50,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 487 transitions, 5963 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:02:50,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:50,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:02:50,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:52,444 INFO L124 PetriNetUnfolderBase]: 3975/6587 cut-off events. [2024-06-20 16:02:52,444 INFO L125 PetriNetUnfolderBase]: For 1872502/1872530 co-relation queries the response was YES. [2024-06-20 16:02:52,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75448 conditions, 6587 events. 3975/6587 cut-off events. For 1872502/1872530 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 43601 event pairs, 831 based on Foata normal form. 9/6544 useless extension candidates. Maximal degree in co-relation 75270. Up to 5922 conditions per place. [2024-06-20 16:02:52,560 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 433 selfloop transitions, 34 changer transitions 0/508 dead transitions. [2024-06-20 16:02:52,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 508 transitions, 7043 flow [2024-06-20 16:02:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:02:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:02:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-20 16:02:52,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-20 16:02:52,564 INFO L175 Difference]: Start difference. First operand has 399 places, 487 transitions, 5963 flow. Second operand 9 states and 167 transitions. [2024-06-20 16:02:52,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 508 transitions, 7043 flow [2024-06-20 16:02:55,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 508 transitions, 6877 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-20 16:02:55,755 INFO L231 Difference]: Finished difference. Result has 404 places, 490 transitions, 5979 flow [2024-06-20 16:02:55,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5797, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5979, PETRI_PLACES=404, PETRI_TRANSITIONS=490} [2024-06-20 16:02:55,755 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2024-06-20 16:02:55,755 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 490 transitions, 5979 flow [2024-06-20 16:02:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:02:55,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:02:55,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:02:55,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 16:02:55,756 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:02:55,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:02:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -666819460, now seen corresponding path program 6 times [2024-06-20 16:02:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:02:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312886740] [2024-06-20 16:02:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:02:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:02:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:02:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:02:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:02:57,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312886740] [2024-06-20 16:02:57,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312886740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:02:57,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:02:57,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:02:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258796563] [2024-06-20 16:02:57,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:02:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:02:57,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:02:57,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:02:57,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:02:57,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:02:57,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 490 transitions, 5979 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:02:57,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:02:57,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:02:57,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:02:58,920 INFO L124 PetriNetUnfolderBase]: 3969/6579 cut-off events. [2024-06-20 16:02:58,921 INFO L125 PetriNetUnfolderBase]: For 1879028/1879040 co-relation queries the response was YES. [2024-06-20 16:02:59,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75089 conditions, 6579 events. 3969/6579 cut-off events. For 1879028/1879040 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 43570 event pairs, 830 based on Foata normal form. 14/6541 useless extension candidates. Maximal degree in co-relation 74909. Up to 5909 conditions per place. [2024-06-20 16:02:59,038 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 428 selfloop transitions, 39 changer transitions 0/508 dead transitions. [2024-06-20 16:02:59,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 508 transitions, 6957 flow [2024-06-20 16:02:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:02:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:02:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:02:59,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-20 16:02:59,039 INFO L175 Difference]: Start difference. First operand has 404 places, 490 transitions, 5979 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:02:59,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 508 transitions, 6957 flow [2024-06-20 16:03:02,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 508 transitions, 6745 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-20 16:03:02,825 INFO L231 Difference]: Finished difference. Result has 406 places, 490 transitions, 5851 flow [2024-06-20 16:03:02,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5767, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5851, PETRI_PLACES=406, PETRI_TRANSITIONS=490} [2024-06-20 16:03:02,826 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 362 predicate places. [2024-06-20 16:03:02,826 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 490 transitions, 5851 flow [2024-06-20 16:03:02,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:03:02,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:02,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:02,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 16:03:02,826 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:02,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash 383802470, now seen corresponding path program 3 times [2024-06-20 16:03:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:02,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578248] [2024-06-20 16:03:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:02,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578248] [2024-06-20 16:03:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:03:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124822993] [2024-06-20 16:03:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:03:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:03:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:03:04,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:03:04,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 490 transitions, 5851 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:03:04,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:04,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:03:04,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:05,802 INFO L124 PetriNetUnfolderBase]: 3966/6575 cut-off events. [2024-06-20 16:03:05,802 INFO L125 PetriNetUnfolderBase]: For 1888148/1888156 co-relation queries the response was YES. [2024-06-20 16:03:05,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74980 conditions, 6575 events. 3966/6575 cut-off events. For 1888148/1888156 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 43529 event pairs, 829 based on Foata normal form. 1/6524 useless extension candidates. Maximal degree in co-relation 74799. Up to 5935 conditions per place. [2024-06-20 16:03:05,921 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 445 selfloop transitions, 25 changer transitions 0/511 dead transitions. [2024-06-20 16:03:05,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 511 transitions, 6947 flow [2024-06-20 16:03:05,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:03:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:03:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:03:05,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-20 16:03:05,922 INFO L175 Difference]: Start difference. First operand has 406 places, 490 transitions, 5851 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:03:05,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 511 transitions, 6947 flow [2024-06-20 16:03:09,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 511 transitions, 6782 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-20 16:03:09,570 INFO L231 Difference]: Finished difference. Result has 406 places, 493 transitions, 5860 flow [2024-06-20 16:03:09,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5686, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5860, PETRI_PLACES=406, PETRI_TRANSITIONS=493} [2024-06-20 16:03:09,571 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 362 predicate places. [2024-06-20 16:03:09,571 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 493 transitions, 5860 flow [2024-06-20 16:03:09,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:03:09,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:09,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:09,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 16:03:09,572 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:09,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 384220040, now seen corresponding path program 4 times [2024-06-20 16:03:09,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:09,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89832795] [2024-06-20 16:03:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:09,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:10,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:10,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89832795] [2024-06-20 16:03:10,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89832795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:10,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:10,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:03:10,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882642086] [2024-06-20 16:03:10,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:10,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:03:10,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:03:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:03:10,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:03:10,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 493 transitions, 5860 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:03:10,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:10,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:03:10,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:12,699 INFO L124 PetriNetUnfolderBase]: 3963/6571 cut-off events. [2024-06-20 16:03:12,700 INFO L125 PetriNetUnfolderBase]: For 1902581/1902589 co-relation queries the response was YES. [2024-06-20 16:03:12,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74960 conditions, 6571 events. 3963/6571 cut-off events. For 1902581/1902589 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 43496 event pairs, 826 based on Foata normal form. 1/6520 useless extension candidates. Maximal degree in co-relation 74779. Up to 5910 conditions per place. [2024-06-20 16:03:12,801 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 438 selfloop transitions, 42 changer transitions 0/521 dead transitions. [2024-06-20 16:03:12,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 521 transitions, 7026 flow [2024-06-20 16:03:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:03:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:03:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-20 16:03:12,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-20 16:03:12,802 INFO L175 Difference]: Start difference. First operand has 406 places, 493 transitions, 5860 flow. Second operand 9 states and 167 transitions. [2024-06-20 16:03:12,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 521 transitions, 7026 flow [2024-06-20 16:03:16,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 521 transitions, 6878 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-20 16:03:16,549 INFO L231 Difference]: Finished difference. Result has 409 places, 503 transitions, 5996 flow [2024-06-20 16:03:16,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5712, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5996, PETRI_PLACES=409, PETRI_TRANSITIONS=503} [2024-06-20 16:03:16,549 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2024-06-20 16:03:16,549 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 503 transitions, 5996 flow [2024-06-20 16:03:16,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:03:16,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:16,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:16,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 16:03:16,550 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:16,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2102635270, now seen corresponding path program 7 times [2024-06-20 16:03:16,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:16,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379891567] [2024-06-20 16:03:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:16,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379891567] [2024-06-20 16:03:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379891567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:03:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449699835] [2024-06-20 16:03:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:03:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:03:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:03:17,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:03:17,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 503 transitions, 5996 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:17,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:17,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:03:17,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:19,344 INFO L124 PetriNetUnfolderBase]: 4255/6928 cut-off events. [2024-06-20 16:03:19,344 INFO L125 PetriNetUnfolderBase]: For 1910852/1910856 co-relation queries the response was YES. [2024-06-20 16:03:19,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76743 conditions, 6928 events. 4255/6928 cut-off events. For 1910852/1910856 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 44832 event pairs, 898 based on Foata normal form. 4/6931 useless extension candidates. Maximal degree in co-relation 76560. Up to 6481 conditions per place. [2024-06-20 16:03:19,454 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 490 selfloop transitions, 29 changer transitions 0/524 dead transitions. [2024-06-20 16:03:19,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 524 transitions, 7114 flow [2024-06-20 16:03:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:03:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:03:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 16:03:19,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-20 16:03:19,455 INFO L175 Difference]: Start difference. First operand has 409 places, 503 transitions, 5996 flow. Second operand 8 states and 149 transitions. [2024-06-20 16:03:19,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 524 transitions, 7114 flow [2024-06-20 16:03:23,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 524 transitions, 6898 flow, removed 90 selfloop flow, removed 5 redundant places. [2024-06-20 16:03:23,682 INFO L231 Difference]: Finished difference. Result has 412 places, 503 transitions, 5844 flow [2024-06-20 16:03:23,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5780, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5844, PETRI_PLACES=412, PETRI_TRANSITIONS=503} [2024-06-20 16:03:23,683 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2024-06-20 16:03:23,683 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 503 transitions, 5844 flow [2024-06-20 16:03:23,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:23,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:23,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:23,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 16:03:23,683 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:23,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:23,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1703030328, now seen corresponding path program 2 times [2024-06-20 16:03:23,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:23,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655427671] [2024-06-20 16:03:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:23,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:24,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655427671] [2024-06-20 16:03:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655427671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:24,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:24,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:03:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242010695] [2024-06-20 16:03:24,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:24,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:03:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:03:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:03:24,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:03:24,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 503 transitions, 5844 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:24,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:24,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:03:24,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:26,540 INFO L124 PetriNetUnfolderBase]: 4048/6667 cut-off events. [2024-06-20 16:03:26,540 INFO L125 PetriNetUnfolderBase]: For 1922910/1922914 co-relation queries the response was YES. [2024-06-20 16:03:26,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75506 conditions, 6667 events. 4048/6667 cut-off events. For 1922910/1922914 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 43776 event pairs, 831 based on Foata normal form. 5/6629 useless extension candidates. Maximal degree in co-relation 75321. Up to 6010 conditions per place. [2024-06-20 16:03:26,657 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 446 selfloop transitions, 29 changer transitions 0/526 dead transitions. [2024-06-20 16:03:26,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 526 transitions, 6972 flow [2024-06-20 16:03:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:03:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:03:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-20 16:03:26,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-20 16:03:26,658 INFO L175 Difference]: Start difference. First operand has 412 places, 503 transitions, 5844 flow. Second operand 8 states and 155 transitions. [2024-06-20 16:03:26,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 526 transitions, 6972 flow [2024-06-20 16:03:31,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 526 transitions, 6820 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-20 16:03:31,204 INFO L231 Difference]: Finished difference. Result has 409 places, 506 transitions, 5890 flow [2024-06-20 16:03:31,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5890, PETRI_PLACES=409, PETRI_TRANSITIONS=506} [2024-06-20 16:03:31,205 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2024-06-20 16:03:31,205 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 506 transitions, 5890 flow [2024-06-20 16:03:31,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:31,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:31,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:31,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 16:03:31,205 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:31,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1711073898, now seen corresponding path program 3 times [2024-06-20 16:03:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659564901] [2024-06-20 16:03:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:32,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659564901] [2024-06-20 16:03:32,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659564901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:32,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:32,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:03:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734143311] [2024-06-20 16:03:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:32,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:03:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:03:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:03:32,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:03:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 506 transitions, 5890 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:32,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:03:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:34,027 INFO L124 PetriNetUnfolderBase]: 4053/6674 cut-off events. [2024-06-20 16:03:34,028 INFO L125 PetriNetUnfolderBase]: For 1954435/1954439 co-relation queries the response was YES. [2024-06-20 16:03:34,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76161 conditions, 6674 events. 4053/6674 cut-off events. For 1954435/1954439 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 43876 event pairs, 831 based on Foata normal form. 5/6636 useless extension candidates. Maximal degree in co-relation 75975. Up to 6017 conditions per place. [2024-06-20 16:03:34,144 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 448 selfloop transitions, 30 changer transitions 0/529 dead transitions. [2024-06-20 16:03:34,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 529 transitions, 7030 flow [2024-06-20 16:03:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:03:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:03:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 16:03:34,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-20 16:03:34,145 INFO L175 Difference]: Start difference. First operand has 409 places, 506 transitions, 5890 flow. Second operand 8 states and 154 transitions. [2024-06-20 16:03:34,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 529 transitions, 7030 flow [2024-06-20 16:03:38,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 529 transitions, 6854 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-20 16:03:38,641 INFO L231 Difference]: Finished difference. Result has 411 places, 509 transitions, 5920 flow [2024-06-20 16:03:38,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5920, PETRI_PLACES=411, PETRI_TRANSITIONS=509} [2024-06-20 16:03:38,642 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 367 predicate places. [2024-06-20 16:03:38,642 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 509 transitions, 5920 flow [2024-06-20 16:03:38,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:38,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:38,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:38,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 16:03:38,642 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:38,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1828416162, now seen corresponding path program 4 times [2024-06-20 16:03:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286262028] [2024-06-20 16:03:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:38,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:39,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:39,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286262028] [2024-06-20 16:03:39,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286262028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:39,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:03:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447415680] [2024-06-20 16:03:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:39,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:03:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:03:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:03:39,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:03:39,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 509 transitions, 5920 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:39,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:39,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:03:39,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:41,423 INFO L124 PetriNetUnfolderBase]: 4050/6670 cut-off events. [2024-06-20 16:03:41,423 INFO L125 PetriNetUnfolderBase]: For 1975449/1975453 co-relation queries the response was YES. [2024-06-20 16:03:41,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76449 conditions, 6670 events. 4050/6670 cut-off events. For 1975449/1975453 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 43874 event pairs, 831 based on Foata normal form. 5/6632 useless extension candidates. Maximal degree in co-relation 76262. Up to 6001 conditions per place. [2024-06-20 16:03:41,537 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 437 selfloop transitions, 41 changer transitions 0/529 dead transitions. [2024-06-20 16:03:41,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 529 transitions, 7058 flow [2024-06-20 16:03:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:03:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:03:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:03:41,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:03:41,538 INFO L175 Difference]: Start difference. First operand has 411 places, 509 transitions, 5920 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:03:41,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 529 transitions, 7058 flow [2024-06-20 16:03:45,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 529 transitions, 6874 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-20 16:03:45,340 INFO L231 Difference]: Finished difference. Result has 413 places, 512 transitions, 5970 flow [2024-06-20 16:03:45,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5736, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5970, PETRI_PLACES=413, PETRI_TRANSITIONS=512} [2024-06-20 16:03:45,340 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 369 predicate places. [2024-06-20 16:03:45,340 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 512 transitions, 5970 flow [2024-06-20 16:03:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:45,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:45,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:45,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 16:03:45,341 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:45,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:45,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2126728790, now seen corresponding path program 8 times [2024-06-20 16:03:45,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:45,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510031627] [2024-06-20 16:03:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:45,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:46,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:46,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510031627] [2024-06-20 16:03:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510031627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:46,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:03:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866211639] [2024-06-20 16:03:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:03:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:03:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:03:46,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:03:46,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 512 transitions, 5970 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:46,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:46,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:03:46,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:47,980 INFO L124 PetriNetUnfolderBase]: 4256/6920 cut-off events. [2024-06-20 16:03:47,981 INFO L125 PetriNetUnfolderBase]: For 2001162/2001166 co-relation queries the response was YES. [2024-06-20 16:03:48,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77952 conditions, 6920 events. 4256/6920 cut-off events. For 2001162/2001166 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 44700 event pairs, 885 based on Foata normal form. 4/6923 useless extension candidates. Maximal degree in co-relation 77764. Up to 6469 conditions per place. [2024-06-20 16:03:48,100 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 492 selfloop transitions, 34 changer transitions 0/531 dead transitions. [2024-06-20 16:03:48,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 531 transitions, 7124 flow [2024-06-20 16:03:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:03:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:03:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 16:03:48,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-20 16:03:48,101 INFO L175 Difference]: Start difference. First operand has 413 places, 512 transitions, 5970 flow. Second operand 8 states and 149 transitions. [2024-06-20 16:03:48,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 531 transitions, 7124 flow [2024-06-20 16:03:53,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 531 transitions, 6832 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-20 16:03:53,226 INFO L231 Difference]: Finished difference. Result has 415 places, 512 transitions, 5752 flow [2024-06-20 16:03:53,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5678, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5752, PETRI_PLACES=415, PETRI_TRANSITIONS=512} [2024-06-20 16:03:53,226 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2024-06-20 16:03:53,226 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 512 transitions, 5752 flow [2024-06-20 16:03:53,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:53,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:03:53,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:03:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 16:03:53,226 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:03:53,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:03:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1703150484, now seen corresponding path program 4 times [2024-06-20 16:03:53,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:03:53,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753938702] [2024-06-20 16:03:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:03:53,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:03:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:03:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:03:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:03:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753938702] [2024-06-20 16:03:54,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753938702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:03:54,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:03:54,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:03:54,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370226515] [2024-06-20 16:03:54,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:03:54,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:03:54,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:03:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:03:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:03:54,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:03:54,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 512 transitions, 5752 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:03:54,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:03:54,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:03:54,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:03:55,996 INFO L124 PetriNetUnfolderBase]: 4036/6654 cut-off events. [2024-06-20 16:03:55,996 INFO L125 PetriNetUnfolderBase]: For 2001779/2001783 co-relation queries the response was YES. [2024-06-20 16:03:56,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76106 conditions, 6654 events. 4036/6654 cut-off events. For 2001779/2001783 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 43809 event pairs, 828 based on Foata normal form. 6/6617 useless extension candidates. Maximal degree in co-relation 75917. Up to 6026 conditions per place. [2024-06-20 16:03:56,118 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 456 selfloop transitions, 23 changer transitions 0/530 dead transitions. [2024-06-20 16:03:56,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 530 transitions, 6782 flow [2024-06-20 16:03:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:03:56,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:03:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:03:56,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:03:56,119 INFO L175 Difference]: Start difference. First operand has 415 places, 512 transitions, 5752 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:03:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 530 transitions, 6782 flow [2024-06-20 16:04:00,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 530 transitions, 6596 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-20 16:04:00,034 INFO L231 Difference]: Finished difference. Result has 415 places, 512 transitions, 5619 flow [2024-06-20 16:04:00,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5566, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5619, PETRI_PLACES=415, PETRI_TRANSITIONS=512} [2024-06-20 16:04:00,034 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2024-06-20 16:04:00,035 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 512 transitions, 5619 flow [2024-06-20 16:04:00,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:00,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:00,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:00,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 16:04:00,035 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:00,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2116456930, now seen corresponding path program 9 times [2024-06-20 16:04:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858900813] [2024-06-20 16:04:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:00,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858900813] [2024-06-20 16:04:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858900813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:04:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675609785] [2024-06-20 16:04:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:04:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:04:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:04:01,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:04:01,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 512 transitions, 5619 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:01,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:01,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:04:01,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:04:02,694 INFO L124 PetriNetUnfolderBase]: 4260/6926 cut-off events. [2024-06-20 16:04:02,694 INFO L125 PetriNetUnfolderBase]: For 2035060/2035064 co-relation queries the response was YES. [2024-06-20 16:04:02,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77848 conditions, 6926 events. 4260/6926 cut-off events. For 2035060/2035064 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 44733 event pairs, 885 based on Foata normal form. 4/6929 useless extension candidates. Maximal degree in co-relation 77658. Up to 6427 conditions per place. [2024-06-20 16:04:02,815 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 475 selfloop transitions, 52 changer transitions 0/532 dead transitions. [2024-06-20 16:04:02,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 532 transitions, 6945 flow [2024-06-20 16:04:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:04:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:04:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-20 16:04:02,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-20 16:04:02,816 INFO L175 Difference]: Start difference. First operand has 415 places, 512 transitions, 5619 flow. Second operand 8 states and 147 transitions. [2024-06-20 16:04:02,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 532 transitions, 6945 flow [2024-06-20 16:04:07,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 532 transitions, 6857 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-20 16:04:07,775 INFO L231 Difference]: Finished difference. Result has 416 places, 515 transitions, 5795 flow [2024-06-20 16:04:07,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5531, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5795, PETRI_PLACES=416, PETRI_TRANSITIONS=515} [2024-06-20 16:04:07,776 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 372 predicate places. [2024-06-20 16:04:07,776 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 515 transitions, 5795 flow [2024-06-20 16:04:07,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:07,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:07,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:07,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 16:04:07,776 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:07,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1713421476, now seen corresponding path program 5 times [2024-06-20 16:04:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932948912] [2024-06-20 16:04:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:08,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:08,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932948912] [2024-06-20 16:04:08,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932948912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:08,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:08,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:04:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109995448] [2024-06-20 16:04:08,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:08,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:04:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:04:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:04:08,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:04:08,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 515 transitions, 5795 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:08,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:08,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:04:08,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:04:10,735 INFO L124 PetriNetUnfolderBase]: 4052/6682 cut-off events. [2024-06-20 16:04:10,736 INFO L125 PetriNetUnfolderBase]: For 2063599/2063603 co-relation queries the response was YES. [2024-06-20 16:04:10,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77246 conditions, 6682 events. 4052/6682 cut-off events. For 2063599/2063603 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 44021 event pairs, 824 based on Foata normal form. 6/6645 useless extension candidates. Maximal degree in co-relation 77055. Up to 6030 conditions per place. [2024-06-20 16:04:10,848 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 452 selfloop transitions, 31 changer transitions 0/535 dead transitions. [2024-06-20 16:04:10,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 535 transitions, 7007 flow [2024-06-20 16:04:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:04:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:04:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:04:10,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 16:04:10,849 INFO L175 Difference]: Start difference. First operand has 416 places, 515 transitions, 5795 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:04:10,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 535 transitions, 7007 flow [2024-06-20 16:04:15,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 535 transitions, 6775 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-20 16:04:15,707 INFO L231 Difference]: Finished difference. Result has 418 places, 519 transitions, 5792 flow [2024-06-20 16:04:15,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5792, PETRI_PLACES=418, PETRI_TRANSITIONS=519} [2024-06-20 16:04:15,707 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 374 predicate places. [2024-06-20 16:04:15,708 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 519 transitions, 5792 flow [2024-06-20 16:04:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:15,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:15,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 16:04:15,708 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:15,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1713407526, now seen corresponding path program 6 times [2024-06-20 16:04:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:15,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954242002] [2024-06-20 16:04:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:15,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:16,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954242002] [2024-06-20 16:04:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954242002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:16,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:16,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:04:16,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217534204] [2024-06-20 16:04:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:04:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:04:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:04:16,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:04:16,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 519 transitions, 5792 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:16,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:16,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:04:16,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:04:18,599 INFO L124 PetriNetUnfolderBase]: 4062/6694 cut-off events. [2024-06-20 16:04:18,599 INFO L125 PetriNetUnfolderBase]: For 2096614/2096618 co-relation queries the response was YES. [2024-06-20 16:04:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78100 conditions, 6694 events. 4062/6694 cut-off events. For 2096614/2096618 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 44063 event pairs, 824 based on Foata normal form. 6/6657 useless extension candidates. Maximal degree in co-relation 77908. Up to 6020 conditions per place. [2024-06-20 16:04:18,719 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 444 selfloop transitions, 46 changer transitions 0/542 dead transitions. [2024-06-20 16:04:18,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 542 transitions, 7050 flow [2024-06-20 16:04:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:04:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:04:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:04:18,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:04:18,720 INFO L175 Difference]: Start difference. First operand has 418 places, 519 transitions, 5792 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:04:18,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 542 transitions, 7050 flow [2024-06-20 16:04:22,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 542 transitions, 6849 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-20 16:04:22,882 INFO L231 Difference]: Finished difference. Result has 421 places, 527 transitions, 5936 flow [2024-06-20 16:04:22,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5591, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5936, PETRI_PLACES=421, PETRI_TRANSITIONS=527} [2024-06-20 16:04:22,882 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 377 predicate places. [2024-06-20 16:04:22,883 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 527 transitions, 5936 flow [2024-06-20 16:04:22,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:22,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:22,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:22,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 16:04:22,883 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:22,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash -268596020, now seen corresponding path program 11 times [2024-06-20 16:04:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524556390] [2024-06-20 16:04:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:24,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:24,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524556390] [2024-06-20 16:04:24,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524556390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:24,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:24,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:04:24,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372918292] [2024-06-20 16:04:24,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:24,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:04:24,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:24,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:04:24,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:04:24,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:04:24,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 527 transitions, 5936 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:24,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:24,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:04:24,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:04:26,185 INFO L124 PetriNetUnfolderBase]: 4451/7269 cut-off events. [2024-06-20 16:04:26,185 INFO L125 PetriNetUnfolderBase]: For 2300827/2300829 co-relation queries the response was YES. [2024-06-20 16:04:26,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84482 conditions, 7269 events. 4451/7269 cut-off events. For 2300827/2300829 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 47742 event pairs, 930 based on Foata normal form. 12/7279 useless extension candidates. Maximal degree in co-relation 84288. Up to 6020 conditions per place. [2024-06-20 16:04:26,313 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 450 selfloop transitions, 127 changer transitions 0/582 dead transitions. [2024-06-20 16:04:26,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 582 transitions, 8009 flow [2024-06-20 16:04:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:04:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:04:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-20 16:04:26,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693446088794926 [2024-06-20 16:04:26,314 INFO L175 Difference]: Start difference. First operand has 421 places, 527 transitions, 5936 flow. Second operand 11 states and 222 transitions. [2024-06-20 16:04:26,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 582 transitions, 8009 flow [2024-06-20 16:04:31,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 582 transitions, 7809 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-06-20 16:04:31,461 INFO L231 Difference]: Finished difference. Result has 430 places, 536 transitions, 6344 flow [2024-06-20 16:04:31,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5736, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6344, PETRI_PLACES=430, PETRI_TRANSITIONS=536} [2024-06-20 16:04:31,462 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 386 predicate places. [2024-06-20 16:04:31,462 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 536 transitions, 6344 flow [2024-06-20 16:04:31,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:31,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:31,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:31,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 16:04:31,462 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:31,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash 357881406, now seen corresponding path program 12 times [2024-06-20 16:04:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369604335] [2024-06-20 16:04:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369604335] [2024-06-20 16:04:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369604335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:04:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350789470] [2024-06-20 16:04:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:32,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:04:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:32,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:04:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:04:32,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:04:32,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 536 transitions, 6344 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:32,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:32,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:04:32,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:04:35,262 INFO L124 PetriNetUnfolderBase]: 4561/7469 cut-off events. [2024-06-20 16:04:35,262 INFO L125 PetriNetUnfolderBase]: For 2356350/2356352 co-relation queries the response was YES. [2024-06-20 16:04:35,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87109 conditions, 7469 events. 4561/7469 cut-off events. For 2356350/2356352 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 49515 event pairs, 965 based on Foata normal form. 12/7479 useless extension candidates. Maximal degree in co-relation 86911. Up to 6411 conditions per place. [2024-06-20 16:04:35,381 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 463 selfloop transitions, 115 changer transitions 0/583 dead transitions. [2024-06-20 16:04:35,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 583 transitions, 7847 flow [2024-06-20 16:04:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:04:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:04:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-20 16:04:35,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-20 16:04:35,382 INFO L175 Difference]: Start difference. First operand has 430 places, 536 transitions, 6344 flow. Second operand 11 states and 220 transitions. [2024-06-20 16:04:35,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 583 transitions, 7847 flow [2024-06-20 16:04:40,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 583 transitions, 7703 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-20 16:04:40,488 INFO L231 Difference]: Finished difference. Result has 438 places, 541 transitions, 6597 flow [2024-06-20 16:04:40,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6200, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6597, PETRI_PLACES=438, PETRI_TRANSITIONS=541} [2024-06-20 16:04:40,488 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 394 predicate places. [2024-06-20 16:04:40,488 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 541 transitions, 6597 flow [2024-06-20 16:04:40,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:40,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:40,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:40,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 16:04:40,488 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:40,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1647427872, now seen corresponding path program 13 times [2024-06-20 16:04:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:40,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673069760] [2024-06-20 16:04:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:40,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:41,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:41,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673069760] [2024-06-20 16:04:41,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673069760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:41,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:41,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:04:41,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823624179] [2024-06-20 16:04:41,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:41,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:04:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:41,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:04:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:04:41,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:04:41,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 541 transitions, 6597 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:41,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:41,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:04:41,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:04:44,080 INFO L124 PetriNetUnfolderBase]: 4602/7550 cut-off events. [2024-06-20 16:04:44,080 INFO L125 PetriNetUnfolderBase]: For 2378950/2378952 co-relation queries the response was YES. [2024-06-20 16:04:44,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87425 conditions, 7550 events. 4602/7550 cut-off events. For 2378950/2378952 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 50309 event pairs, 975 based on Foata normal form. 12/7560 useless extension candidates. Maximal degree in co-relation 87224. Up to 6346 conditions per place. [2024-06-20 16:04:44,215 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 455 selfloop transitions, 127 changer transitions 0/587 dead transitions. [2024-06-20 16:04:44,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 587 transitions, 8498 flow [2024-06-20 16:04:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:04:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:04:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-20 16:04:44,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-20 16:04:44,216 INFO L175 Difference]: Start difference. First operand has 438 places, 541 transitions, 6597 flow. Second operand 11 states and 220 transitions. [2024-06-20 16:04:44,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 587 transitions, 8498 flow [2024-06-20 16:04:48,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 587 transitions, 8123 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-20 16:04:48,869 INFO L231 Difference]: Finished difference. Result has 442 places, 542 transitions, 6585 flow [2024-06-20 16:04:48,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6222, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6585, PETRI_PLACES=442, PETRI_TRANSITIONS=542} [2024-06-20 16:04:48,869 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 398 predicate places. [2024-06-20 16:04:48,869 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 542 transitions, 6585 flow [2024-06-20 16:04:48,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:48,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:48,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:48,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 16:04:48,870 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:48,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1970365568, now seen corresponding path program 14 times [2024-06-20 16:04:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:48,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938287183] [2024-06-20 16:04:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:48,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:50,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:50,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938287183] [2024-06-20 16:04:50,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938287183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:50,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:50,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:04:50,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157707612] [2024-06-20 16:04:50,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:50,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:04:50,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:50,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:04:50,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:04:50,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:04:50,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 542 transitions, 6585 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:50,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:50,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:04:50,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:04:52,509 INFO L124 PetriNetUnfolderBase]: 4582/7518 cut-off events. [2024-06-20 16:04:52,509 INFO L125 PetriNetUnfolderBase]: For 2317122/2317124 co-relation queries the response was YES. [2024-06-20 16:04:52,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85342 conditions, 7518 events. 4582/7518 cut-off events. For 2317122/2317124 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 50050 event pairs, 966 based on Foata normal form. 12/7528 useless extension candidates. Maximal degree in co-relation 85141. Up to 6450 conditions per place. [2024-06-20 16:04:52,638 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 455 selfloop transitions, 124 changer transitions 0/584 dead transitions. [2024-06-20 16:04:52,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 584 transitions, 7939 flow [2024-06-20 16:04:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:04:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:04:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-20 16:04:52,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45665961945031713 [2024-06-20 16:04:52,639 INFO L175 Difference]: Start difference. First operand has 442 places, 542 transitions, 6585 flow. Second operand 11 states and 216 transitions. [2024-06-20 16:04:52,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 584 transitions, 7939 flow [2024-06-20 16:04:57,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 584 transitions, 7513 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-20 16:04:57,358 INFO L231 Difference]: Finished difference. Result has 444 places, 542 transitions, 6413 flow [2024-06-20 16:04:57,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6159, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6413, PETRI_PLACES=444, PETRI_TRANSITIONS=542} [2024-06-20 16:04:57,359 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 400 predicate places. [2024-06-20 16:04:57,359 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 542 transitions, 6413 flow [2024-06-20 16:04:57,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:57,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:04:57,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:04:57,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 16:04:57,359 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:04:57,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:04:57,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1133902720, now seen corresponding path program 15 times [2024-06-20 16:04:57,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:04:57,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90081270] [2024-06-20 16:04:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:04:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:04:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:04:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:04:58,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:04:58,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90081270] [2024-06-20 16:04:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90081270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:04:58,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:04:58,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:04:58,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849206244] [2024-06-20 16:04:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:04:58,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:04:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:04:58,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:04:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:04:58,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:04:58,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 542 transitions, 6413 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:04:58,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:04:58,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:04:58,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:05:00,830 INFO L124 PetriNetUnfolderBase]: 4664/7680 cut-off events. [2024-06-20 16:05:00,830 INFO L125 PetriNetUnfolderBase]: For 2339311/2339313 co-relation queries the response was YES. [2024-06-20 16:05:00,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85998 conditions, 7680 events. 4664/7680 cut-off events. For 2339311/2339313 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 51401 event pairs, 891 based on Foata normal form. 12/7690 useless extension candidates. Maximal degree in co-relation 85796. Up to 3976 conditions per place. [2024-06-20 16:05:00,954 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 403 selfloop transitions, 182 changer transitions 0/590 dead transitions. [2024-06-20 16:05:00,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 590 transitions, 8207 flow [2024-06-20 16:05:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:05:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:05:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-20 16:05:00,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-20 16:05:00,956 INFO L175 Difference]: Start difference. First operand has 444 places, 542 transitions, 6413 flow. Second operand 11 states and 219 transitions. [2024-06-20 16:05:00,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 590 transitions, 8207 flow [2024-06-20 16:05:06,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 590 transitions, 7940 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 16:05:06,403 INFO L231 Difference]: Finished difference. Result has 447 places, 544 transitions, 6746 flow [2024-06-20 16:05:06,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6146, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6746, PETRI_PLACES=447, PETRI_TRANSITIONS=544} [2024-06-20 16:05:06,403 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2024-06-20 16:05:06,403 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 544 transitions, 6746 flow [2024-06-20 16:05:06,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:06,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:05:06,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:05:06,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 16:05:06,404 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:05:06,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:05:06,404 INFO L85 PathProgramCache]: Analyzing trace with hash 72128060, now seen corresponding path program 16 times [2024-06-20 16:05:06,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:05:06,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12099350] [2024-06-20 16:05:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:05:06,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:05:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:05:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:05:07,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:05:07,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12099350] [2024-06-20 16:05:07,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12099350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:05:07,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:05:07,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:05:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964206245] [2024-06-20 16:05:07,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:05:07,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:05:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:05:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:05:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:05:07,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:05:07,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 544 transitions, 6746 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:05:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:05:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:05:09,936 INFO L124 PetriNetUnfolderBase]: 4705/7761 cut-off events. [2024-06-20 16:05:09,936 INFO L125 PetriNetUnfolderBase]: For 2390071/2390073 co-relation queries the response was YES. [2024-06-20 16:05:10,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88023 conditions, 7761 events. 4705/7761 cut-off events. For 2390071/2390073 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 52412 event pairs, 1006 based on Foata normal form. 12/7771 useless extension candidates. Maximal degree in co-relation 87819. Up to 6553 conditions per place. [2024-06-20 16:05:10,076 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 465 selfloop transitions, 118 changer transitions 0/588 dead transitions. [2024-06-20 16:05:10,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 588 transitions, 8221 flow [2024-06-20 16:05:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:05:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:05:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-20 16:05:10,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693446088794926 [2024-06-20 16:05:10,078 INFO L175 Difference]: Start difference. First operand has 447 places, 544 transitions, 6746 flow. Second operand 11 states and 222 transitions. [2024-06-20 16:05:10,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 588 transitions, 8221 flow [2024-06-20 16:05:16,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 588 transitions, 7852 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-20 16:05:16,089 INFO L231 Difference]: Finished difference. Result has 450 places, 545 transitions, 6732 flow [2024-06-20 16:05:16,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6378, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6732, PETRI_PLACES=450, PETRI_TRANSITIONS=545} [2024-06-20 16:05:16,090 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 406 predicate places. [2024-06-20 16:05:16,090 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 545 transitions, 6732 flow [2024-06-20 16:05:16,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:16,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:05:16,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:05:16,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 16:05:16,090 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:05:16,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:05:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash 330416030, now seen corresponding path program 17 times [2024-06-20 16:05:16,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:05:16,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602876585] [2024-06-20 16:05:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:05:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:05:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:05:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:05:17,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:05:17,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602876585] [2024-06-20 16:05:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602876585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:05:17,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:05:17,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:05:17,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353552309] [2024-06-20 16:05:17,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:05:17,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:05:17,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:05:17,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:05:17,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:05:17,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:05:17,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 545 transitions, 6732 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:17,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:05:17,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:05:17,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:05:19,818 INFO L124 PetriNetUnfolderBase]: 4746/7842 cut-off events. [2024-06-20 16:05:19,818 INFO L125 PetriNetUnfolderBase]: For 2422509/2422511 co-relation queries the response was YES. [2024-06-20 16:05:19,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88235 conditions, 7842 events. 4746/7842 cut-off events. For 2422509/2422511 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 53118 event pairs, 1016 based on Foata normal form. 12/7852 useless extension candidates. Maximal degree in co-relation 88030. Up to 6207 conditions per place. [2024-06-20 16:05:19,946 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 458 selfloop transitions, 128 changer transitions 0/591 dead transitions. [2024-06-20 16:05:19,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 591 transitions, 8512 flow [2024-06-20 16:05:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:05:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:05:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-20 16:05:19,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693446088794926 [2024-06-20 16:05:19,947 INFO L175 Difference]: Start difference. First operand has 450 places, 545 transitions, 6732 flow. Second operand 11 states and 222 transitions. [2024-06-20 16:05:19,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 591 transitions, 8512 flow [2024-06-20 16:05:25,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 591 transitions, 8178 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-20 16:05:25,087 INFO L231 Difference]: Finished difference. Result has 452 places, 546 transitions, 6772 flow [2024-06-20 16:05:25,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6398, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6772, PETRI_PLACES=452, PETRI_TRANSITIONS=546} [2024-06-20 16:05:25,087 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 408 predicate places. [2024-06-20 16:05:25,087 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 546 transitions, 6772 flow [2024-06-20 16:05:25,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:25,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:05:25,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:05:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 16:05:25,088 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:05:25,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:05:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1783657102, now seen corresponding path program 18 times [2024-06-20 16:05:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:05:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338099043] [2024-06-20 16:05:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:05:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:05:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:05:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:05:26,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:05:26,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338099043] [2024-06-20 16:05:26,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338099043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:05:26,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:05:26,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:05:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158583720] [2024-06-20 16:05:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:05:26,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:05:26,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:05:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:05:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:05:26,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:05:26,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 546 transitions, 6772 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:26,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:05:26,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:05:26,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:05:28,811 INFO L124 PetriNetUnfolderBase]: 4856/8042 cut-off events. [2024-06-20 16:05:28,812 INFO L125 PetriNetUnfolderBase]: For 2461326/2461328 co-relation queries the response was YES. [2024-06-20 16:05:28,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89761 conditions, 8042 events. 4856/8042 cut-off events. For 2461326/2461328 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 54968 event pairs, 1051 based on Foata normal form. 12/8052 useless extension candidates. Maximal degree in co-relation 89555. Up to 6915 conditions per place. [2024-06-20 16:05:28,954 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 469 selfloop transitions, 119 changer transitions 0/593 dead transitions. [2024-06-20 16:05:28,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 593 transitions, 8319 flow [2024-06-20 16:05:28,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:05:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:05:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-20 16:05:28,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-20 16:05:28,955 INFO L175 Difference]: Start difference. First operand has 452 places, 546 transitions, 6772 flow. Second operand 11 states and 219 transitions. [2024-06-20 16:05:28,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 593 transitions, 8319 flow [2024-06-20 16:05:34,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 593 transitions, 7723 flow, removed 61 selfloop flow, removed 12 redundant places. [2024-06-20 16:05:34,800 INFO L231 Difference]: Finished difference. Result has 452 places, 551 transitions, 6605 flow [2024-06-20 16:05:34,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6199, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6605, PETRI_PLACES=452, PETRI_TRANSITIONS=551} [2024-06-20 16:05:34,801 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 408 predicate places. [2024-06-20 16:05:34,801 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 551 transitions, 6605 flow [2024-06-20 16:05:34,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:34,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:05:34,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:05:34,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 16:05:34,801 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:05:34,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:05:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1589717692, now seen corresponding path program 19 times [2024-06-20 16:05:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:05:34,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030018278] [2024-06-20 16:05:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:05:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:05:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:05:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:05:35,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:05:35,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030018278] [2024-06-20 16:05:35,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030018278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:05:35,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:05:35,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:05:35,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246681807] [2024-06-20 16:05:35,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:05:35,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:05:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:05:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:05:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:05:36,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:05:36,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 551 transitions, 6605 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:36,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:05:36,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:05:36,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:05:38,638 INFO L124 PetriNetUnfolderBase]: 4897/8123 cut-off events. [2024-06-20 16:05:38,639 INFO L125 PetriNetUnfolderBase]: For 2482304/2482306 co-relation queries the response was YES. [2024-06-20 16:05:38,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89342 conditions, 8123 events. 4897/8123 cut-off events. For 2482304/2482306 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 55797 event pairs, 1066 based on Foata normal form. 12/8133 useless extension candidates. Maximal degree in co-relation 89137. Up to 6986 conditions per place. [2024-06-20 16:05:38,772 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 468 selfloop transitions, 121 changer transitions 0/594 dead transitions. [2024-06-20 16:05:38,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 594 transitions, 8085 flow [2024-06-20 16:05:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:05:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:05:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-20 16:05:38,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587737843551797 [2024-06-20 16:05:38,773 INFO L175 Difference]: Start difference. First operand has 452 places, 551 transitions, 6605 flow. Second operand 11 states and 217 transitions. [2024-06-20 16:05:38,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 594 transitions, 8085 flow [2024-06-20 16:05:44,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 594 transitions, 7781 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-20 16:05:44,949 INFO L231 Difference]: Finished difference. Result has 457 places, 552 transitions, 6657 flow [2024-06-20 16:05:44,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6301, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6657, PETRI_PLACES=457, PETRI_TRANSITIONS=552} [2024-06-20 16:05:44,949 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 413 predicate places. [2024-06-20 16:05:44,950 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 552 transitions, 6657 flow [2024-06-20 16:05:44,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:44,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:05:44,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:05:44,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 16:05:44,950 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:05:44,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:05:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1791066412, now seen corresponding path program 20 times [2024-06-20 16:05:44,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:05:44,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872009020] [2024-06-20 16:05:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:05:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:05:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:05:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:05:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:05:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872009020] [2024-06-20 16:05:46,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872009020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:05:46,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:05:46,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:05:46,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032991825] [2024-06-20 16:05:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:05:46,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:05:46,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:05:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:05:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:05:46,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:05:46,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 552 transitions, 6657 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:46,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:05:46,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:05:46,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:05:48,762 INFO L124 PetriNetUnfolderBase]: 4877/8091 cut-off events. [2024-06-20 16:05:48,762 INFO L125 PetriNetUnfolderBase]: For 2414182/2414184 co-relation queries the response was YES. [2024-06-20 16:05:48,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87252 conditions, 8091 events. 4877/8091 cut-off events. For 2414182/2414184 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 55476 event pairs, 1047 based on Foata normal form. 12/8101 useless extension candidates. Maximal degree in co-relation 87046. Up to 6665 conditions per place. [2024-06-20 16:05:48,906 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 464 selfloop transitions, 125 changer transitions 0/594 dead transitions. [2024-06-20 16:05:48,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 594 transitions, 7871 flow [2024-06-20 16:05:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:05:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:05:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-20 16:05:48,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2024-06-20 16:05:48,907 INFO L175 Difference]: Start difference. First operand has 457 places, 552 transitions, 6657 flow. Second operand 11 states and 218 transitions. [2024-06-20 16:05:48,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 594 transitions, 7871 flow [2024-06-20 16:05:56,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 594 transitions, 7461 flow, removed 83 selfloop flow, removed 10 redundant places. [2024-06-20 16:05:56,714 INFO L231 Difference]: Finished difference. Result has 457 places, 551 transitions, 6339 flow [2024-06-20 16:05:56,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6085, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6339, PETRI_PLACES=457, PETRI_TRANSITIONS=551} [2024-06-20 16:05:56,715 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 413 predicate places. [2024-06-20 16:05:56,715 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 551 transitions, 6339 flow [2024-06-20 16:05:56,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:56,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:05:56,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:05:56,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 16:05:56,715 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:05:56,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:05:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash 783712440, now seen corresponding path program 7 times [2024-06-20 16:05:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:05:56,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204293740] [2024-06-20 16:05:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:05:56,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:05:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:05:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:05:57,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:05:57,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204293740] [2024-06-20 16:05:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204293740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:05:57,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:05:57,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:05:57,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142623594] [2024-06-20 16:05:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:05:57,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:05:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:05:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:05:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:05:57,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:05:57,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 551 transitions, 6339 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:05:57,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:05:57,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:05:57,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:05:59,896 INFO L124 PetriNetUnfolderBase]: 4694/7861 cut-off events. [2024-06-20 16:05:59,896 INFO L125 PetriNetUnfolderBase]: For 2373613/2373619 co-relation queries the response was YES. [2024-06-20 16:05:59,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86150 conditions, 7861 events. 4694/7861 cut-off events. For 2373613/2373619 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 54719 event pairs, 996 based on Foata normal form. 7/7825 useless extension candidates. Maximal degree in co-relation 85946. Up to 6988 conditions per place. [2024-06-20 16:06:00,037 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 437 selfloop transitions, 92 changer transitions 0/581 dead transitions. [2024-06-20 16:06:00,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 581 transitions, 8544 flow [2024-06-20 16:06:00,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:06:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:06:00,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-20 16:06:00,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2024-06-20 16:06:00,039 INFO L175 Difference]: Start difference. First operand has 457 places, 551 transitions, 6339 flow. Second operand 8 states and 153 transitions. [2024-06-20 16:06:00,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 581 transitions, 8544 flow [2024-06-20 16:06:07,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 581 transitions, 8233 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-20 16:06:07,029 INFO L231 Difference]: Finished difference. Result has 456 places, 568 transitions, 6800 flow [2024-06-20 16:06:07,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6028, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6800, PETRI_PLACES=456, PETRI_TRANSITIONS=568} [2024-06-20 16:06:07,029 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 412 predicate places. [2024-06-20 16:06:07,030 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 568 transitions, 6800 flow [2024-06-20 16:06:07,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:07,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:06:07,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:06:07,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 16:06:07,030 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:06:07,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:06:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2006139458, now seen corresponding path program 8 times [2024-06-20 16:06:07,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:06:07,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705406166] [2024-06-20 16:06:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:06:07,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:06:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:06:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:06:08,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:06:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705406166] [2024-06-20 16:06:08,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705406166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:06:08,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:06:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:06:08,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462679618] [2024-06-20 16:06:08,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:06:08,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:06:08,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:06:08,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:06:08,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:06:08,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:06:08,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 568 transitions, 6800 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:08,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:06:08,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:06:08,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:06:10,168 INFO L124 PetriNetUnfolderBase]: 4705/7877 cut-off events. [2024-06-20 16:06:10,168 INFO L125 PetriNetUnfolderBase]: For 2421608/2421614 co-relation queries the response was YES. [2024-06-20 16:06:10,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87060 conditions, 7877 events. 4705/7877 cut-off events. For 2421608/2421614 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 54803 event pairs, 994 based on Foata normal form. 7/7841 useless extension candidates. Maximal degree in co-relation 86854. Up to 7003 conditions per place. [2024-06-20 16:06:10,304 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 437 selfloop transitions, 98 changer transitions 0/587 dead transitions. [2024-06-20 16:06:10,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 587 transitions, 8731 flow [2024-06-20 16:06:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:06:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:06:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-20 16:06:10,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:06:10,306 INFO L175 Difference]: Start difference. First operand has 456 places, 568 transitions, 6800 flow. Second operand 8 states and 152 transitions. [2024-06-20 16:06:10,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 587 transitions, 8731 flow [2024-06-20 16:06:16,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 587 transitions, 8427 flow, removed 145 selfloop flow, removed 2 redundant places. [2024-06-20 16:06:16,537 INFO L231 Difference]: Finished difference. Result has 462 places, 574 transitions, 6921 flow [2024-06-20 16:06:16,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6542, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6921, PETRI_PLACES=462, PETRI_TRANSITIONS=574} [2024-06-20 16:06:16,538 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 418 predicate places. [2024-06-20 16:06:16,538 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 574 transitions, 6921 flow [2024-06-20 16:06:16,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:16,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:06:16,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:06:16,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 16:06:16,538 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:06:16,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:06:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash 997977000, now seen corresponding path program 9 times [2024-06-20 16:06:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:06:16,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216994861] [2024-06-20 16:06:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:06:16,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:06:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:06:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:06:17,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:06:17,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216994861] [2024-06-20 16:06:17,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216994861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:06:17,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:06:17,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:06:17,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089186397] [2024-06-20 16:06:17,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:06:17,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:06:17,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:06:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:06:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:06:17,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:06:17,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 574 transitions, 6921 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:17,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:06:17,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:06:17,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:06:19,888 INFO L124 PetriNetUnfolderBase]: 4702/7869 cut-off events. [2024-06-20 16:06:19,888 INFO L125 PetriNetUnfolderBase]: For 2432290/2432296 co-relation queries the response was YES. [2024-06-20 16:06:19,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86526 conditions, 7869 events. 4702/7869 cut-off events. For 2432290/2432296 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 54708 event pairs, 992 based on Foata normal form. 7/7833 useless extension candidates. Maximal degree in co-relation 86318. Up to 7065 conditions per place. [2024-06-20 16:06:20,023 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 480 selfloop transitions, 57 changer transitions 0/589 dead transitions. [2024-06-20 16:06:20,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 589 transitions, 8395 flow [2024-06-20 16:06:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:06:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:06:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:06:20,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 16:06:20,024 INFO L175 Difference]: Start difference. First operand has 462 places, 574 transitions, 6921 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:06:20,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 589 transitions, 8395 flow [2024-06-20 16:06:26,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 589 transitions, 8099 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-20 16:06:26,324 INFO L231 Difference]: Finished difference. Result has 467 places, 576 transitions, 6826 flow [2024-06-20 16:06:26,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6649, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6826, PETRI_PLACES=467, PETRI_TRANSITIONS=576} [2024-06-20 16:06:26,324 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 423 predicate places. [2024-06-20 16:06:26,324 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 576 transitions, 6826 flow [2024-06-20 16:06:26,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:26,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:06:26,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:06:26,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 16:06:26,325 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:06:26,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:06:26,325 INFO L85 PathProgramCache]: Analyzing trace with hash 770068906, now seen corresponding path program 10 times [2024-06-20 16:06:26,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:06:26,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777687553] [2024-06-20 16:06:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:06:26,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:06:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:06:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:06:27,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:06:27,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777687553] [2024-06-20 16:06:27,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777687553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:06:27,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:06:27,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:06:27,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741089341] [2024-06-20 16:06:27,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:06:27,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:06:27,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:06:27,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:06:27,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:06:27,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:06:27,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 576 transitions, 6826 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:27,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:06:27,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:06:27,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:06:29,423 INFO L124 PetriNetUnfolderBase]: 4950/8195 cut-off events. [2024-06-20 16:06:29,423 INFO L125 PetriNetUnfolderBase]: For 2521081/2521087 co-relation queries the response was YES. [2024-06-20 16:06:29,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89512 conditions, 8195 events. 4950/8195 cut-off events. For 2521081/2521087 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 56163 event pairs, 1062 based on Foata normal form. 6/8200 useless extension candidates. Maximal degree in co-relation 89302. Up to 7484 conditions per place. [2024-06-20 16:06:29,573 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 511 selfloop transitions, 88 changer transitions 0/604 dead transitions. [2024-06-20 16:06:29,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 604 transitions, 9286 flow [2024-06-20 16:06:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:06:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:06:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-20 16:06:29,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-20 16:06:29,574 INFO L175 Difference]: Start difference. First operand has 467 places, 576 transitions, 6826 flow. Second operand 8 states and 149 transitions. [2024-06-20 16:06:29,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 604 transitions, 9286 flow [2024-06-20 16:06:36,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 604 transitions, 9165 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-20 16:06:36,013 INFO L231 Difference]: Finished difference. Result has 470 places, 585 transitions, 7373 flow [2024-06-20 16:06:36,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6705, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7373, PETRI_PLACES=470, PETRI_TRANSITIONS=585} [2024-06-20 16:06:36,013 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 426 predicate places. [2024-06-20 16:06:36,014 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 585 transitions, 7373 flow [2024-06-20 16:06:36,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:36,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:06:36,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:06:36,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 16:06:36,014 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:06:36,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:06:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1394213922, now seen corresponding path program 10 times [2024-06-20 16:06:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:06:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477928241] [2024-06-20 16:06:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:06:36,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:06:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:06:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:06:37,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:06:37,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477928241] [2024-06-20 16:06:37,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477928241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:06:37,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:06:37,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:06:37,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584343280] [2024-06-20 16:06:37,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:06:37,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:06:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:06:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:06:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:06:37,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:06:37,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 585 transitions, 7373 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:37,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:06:37,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:06:37,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:06:39,215 INFO L124 PetriNetUnfolderBase]: 4742/7932 cut-off events. [2024-06-20 16:06:39,215 INFO L125 PetriNetUnfolderBase]: For 2556307/2556313 co-relation queries the response was YES. [2024-06-20 16:06:39,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88833 conditions, 7932 events. 4742/7932 cut-off events. For 2556307/2556313 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 55124 event pairs, 993 based on Foata normal form. 8/7897 useless extension candidates. Maximal degree in co-relation 88622. Up to 7131 conditions per place. [2024-06-20 16:06:39,358 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 499 selfloop transitions, 48 changer transitions 0/602 dead transitions. [2024-06-20 16:06:39,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 602 transitions, 8643 flow [2024-06-20 16:06:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:06:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:06:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:06:39,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-20 16:06:39,359 INFO L175 Difference]: Start difference. First operand has 470 places, 585 transitions, 7373 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:06:39,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 602 transitions, 8643 flow [2024-06-20 16:06:45,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 602 transitions, 8327 flow, removed 97 selfloop flow, removed 4 redundant places. [2024-06-20 16:06:45,550 INFO L231 Difference]: Finished difference. Result has 474 places, 589 transitions, 7310 flow [2024-06-20 16:06:45,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7057, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7310, PETRI_PLACES=474, PETRI_TRANSITIONS=589} [2024-06-20 16:06:45,551 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 430 predicate places. [2024-06-20 16:06:45,551 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 589 transitions, 7310 flow [2024-06-20 16:06:45,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:45,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:06:45,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:06:45,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 16:06:45,552 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:06:45,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:06:45,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1394393846, now seen corresponding path program 11 times [2024-06-20 16:06:45,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:06:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658373029] [2024-06-20 16:06:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:06:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:06:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:06:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:06:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:06:46,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658373029] [2024-06-20 16:06:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658373029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:06:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:06:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:06:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30386818] [2024-06-20 16:06:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:06:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:06:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:06:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:06:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:06:46,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:06:46,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 589 transitions, 7310 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:46,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:06:46,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:06:46,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:06:48,821 INFO L124 PetriNetUnfolderBase]: 4954/8201 cut-off events. [2024-06-20 16:06:48,821 INFO L125 PetriNetUnfolderBase]: For 2555166/2555172 co-relation queries the response was YES. [2024-06-20 16:06:48,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89431 conditions, 8201 events. 4954/8201 cut-off events. For 2555166/2555172 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 56216 event pairs, 1061 based on Foata normal form. 6/8206 useless extension candidates. Maximal degree in co-relation 89219. Up to 7493 conditions per place. [2024-06-20 16:06:48,954 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 510 selfloop transitions, 90 changer transitions 0/605 dead transitions. [2024-06-20 16:06:48,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 605 transitions, 8950 flow [2024-06-20 16:06:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:06:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:06:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-20 16:06:48,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-20 16:06:48,955 INFO L175 Difference]: Start difference. First operand has 474 places, 589 transitions, 7310 flow. Second operand 8 states and 147 transitions. [2024-06-20 16:06:48,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 605 transitions, 8950 flow [2024-06-20 16:06:54,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 605 transitions, 8641 flow, removed 109 selfloop flow, removed 6 redundant places. [2024-06-20 16:06:54,562 INFO L231 Difference]: Finished difference. Result has 476 places, 589 transitions, 7187 flow [2024-06-20 16:06:54,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7001, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7187, PETRI_PLACES=476, PETRI_TRANSITIONS=589} [2024-06-20 16:06:54,562 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 432 predicate places. [2024-06-20 16:06:54,562 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 589 transitions, 7187 flow [2024-06-20 16:06:54,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:54,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:06:54,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:06:54,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 16:06:54,563 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:06:54,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:06:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1158038562, now seen corresponding path program 11 times [2024-06-20 16:06:54,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:06:54,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867027647] [2024-06-20 16:06:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:06:54,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:06:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:06:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:06:55,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:06:55,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867027647] [2024-06-20 16:06:55,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867027647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:06:55,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:06:55,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:06:55,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335320913] [2024-06-20 16:06:55,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:06:55,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:06:55,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:06:55,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:06:55,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:06:55,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:06:55,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 589 transitions, 7187 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:06:55,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:06:55,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:06:55,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:06:57,842 INFO L124 PetriNetUnfolderBase]: 4732/7918 cut-off events. [2024-06-20 16:06:57,842 INFO L125 PetriNetUnfolderBase]: For 2552326/2552332 co-relation queries the response was YES. [2024-06-20 16:06:57,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87480 conditions, 7918 events. 4732/7918 cut-off events. For 2552326/2552332 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 55066 event pairs, 994 based on Foata normal form. 8/7883 useless extension candidates. Maximal degree in co-relation 87267. Up to 7117 conditions per place. [2024-06-20 16:06:57,990 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 499 selfloop transitions, 48 changer transitions 0/602 dead transitions. [2024-06-20 16:06:57,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 602 transitions, 8315 flow [2024-06-20 16:06:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:06:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:06:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-20 16:06:57,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-20 16:06:57,991 INFO L175 Difference]: Start difference. First operand has 476 places, 589 transitions, 7187 flow. Second operand 8 states and 150 transitions. [2024-06-20 16:06:57,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 602 transitions, 8315 flow [2024-06-20 16:07:06,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 602 transitions, 8041 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-20 16:07:06,690 INFO L231 Difference]: Finished difference. Result has 478 places, 589 transitions, 7016 flow [2024-06-20 16:07:06,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6913, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7016, PETRI_PLACES=478, PETRI_TRANSITIONS=589} [2024-06-20 16:07:06,691 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 434 predicate places. [2024-06-20 16:07:06,691 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 589 transitions, 7016 flow [2024-06-20 16:07:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:07:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:07:06,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:07:06,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 16:07:06,691 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:07:06,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:07:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1006719930, now seen corresponding path program 12 times [2024-06-20 16:07:06,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:07:06,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686224933] [2024-06-20 16:07:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:07:06,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:07:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:07:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:07:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:07:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686224933] [2024-06-20 16:07:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686224933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:07:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:07:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:07:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806090978] [2024-06-20 16:07:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:07:07,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:07:07,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:07:07,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:07:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:07:07,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:07:07,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 589 transitions, 7016 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:07:07,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:07:07,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:07:07,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:07:10,156 INFO L124 PetriNetUnfolderBase]: 4728/7912 cut-off events. [2024-06-20 16:07:10,156 INFO L125 PetriNetUnfolderBase]: For 2557138/2557144 co-relation queries the response was YES. [2024-06-20 16:07:10,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87041 conditions, 7912 events. 4728/7912 cut-off events. For 2557138/2557144 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 55047 event pairs, 996 based on Foata normal form. 8/7877 useless extension candidates. Maximal degree in co-relation 86827. Up to 7085 conditions per place. [2024-06-20 16:07:10,288 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 483 selfloop transitions, 63 changer transitions 0/601 dead transitions. [2024-06-20 16:07:10,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 601 transitions, 8138 flow [2024-06-20 16:07:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:07:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:07:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:07:10,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 16:07:10,289 INFO L175 Difference]: Start difference. First operand has 478 places, 589 transitions, 7016 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:07:10,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 601 transitions, 8138 flow [2024-06-20 16:07:16,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 601 transitions, 7908 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-20 16:07:16,432 INFO L231 Difference]: Finished difference. Result has 479 places, 589 transitions, 6919 flow [2024-06-20 16:07:16,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6786, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6919, PETRI_PLACES=479, PETRI_TRANSITIONS=589} [2024-06-20 16:07:16,432 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 435 predicate places. [2024-06-20 16:07:16,432 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 589 transitions, 6919 flow [2024-06-20 16:07:16,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:07:16,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:07:16,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:07:16,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 16:07:16,433 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:07:16,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:07:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1158038996, now seen corresponding path program 12 times [2024-06-20 16:07:16,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:07:16,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815705038] [2024-06-20 16:07:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:07:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:07:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:07:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:07:17,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:07:17,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815705038] [2024-06-20 16:07:17,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815705038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:07:17,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:07:17,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:07:17,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652004551] [2024-06-20 16:07:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:07:17,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:07:17,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:07:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:07:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:07:17,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-20 16:07:17,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 589 transitions, 6919 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:07:17,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:07:17,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-20 16:07:17,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:07:19,477 INFO L124 PetriNetUnfolderBase]: 4936/8177 cut-off events. [2024-06-20 16:07:19,477 INFO L125 PetriNetUnfolderBase]: For 2565783/2565789 co-relation queries the response was YES. [2024-06-20 16:07:19,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88099 conditions, 8177 events. 4936/8177 cut-off events. For 2565783/2565789 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 56062 event pairs, 1063 based on Foata normal form. 6/8182 useless extension candidates. Maximal degree in co-relation 87884. Up to 7472 conditions per place. [2024-06-20 16:07:19,621 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 510 selfloop transitions, 90 changer transitions 0/605 dead transitions. [2024-06-20 16:07:19,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 605 transitions, 8249 flow [2024-06-20 16:07:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:07:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:07:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-20 16:07:19,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42441860465116277 [2024-06-20 16:07:19,622 INFO L175 Difference]: Start difference. First operand has 479 places, 589 transitions, 6919 flow. Second operand 8 states and 146 transitions. [2024-06-20 16:07:19,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 605 transitions, 8249 flow [2024-06-20 16:07:27,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 605 transitions, 7907 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-20 16:07:27,401 INFO L231 Difference]: Finished difference. Result has 479 places, 589 transitions, 6763 flow [2024-06-20 16:07:27,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6577, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6763, PETRI_PLACES=479, PETRI_TRANSITIONS=589} [2024-06-20 16:07:27,401 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 435 predicate places. [2024-06-20 16:07:27,402 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 589 transitions, 6763 flow [2024-06-20 16:07:27,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:07:27,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:07:27,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:07:27,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 16:07:27,402 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:07:27,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:07:27,403 INFO L85 PathProgramCache]: Analyzing trace with hash -937272310, now seen corresponding path program 5 times [2024-06-20 16:07:27,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:07:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601865102] [2024-06-20 16:07:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:07:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:07:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:07:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:07:28,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:07:28,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601865102] [2024-06-20 16:07:28,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601865102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:07:28,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:07:28,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:07:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338137085] [2024-06-20 16:07:28,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:07:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:07:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:07:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:07:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:07:28,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:07:28,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 589 transitions, 6763 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:07:28,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:07:28,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:07:28,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:07:30,810 INFO L124 PetriNetUnfolderBase]: 4562/7712 cut-off events. [2024-06-20 16:07:30,810 INFO L125 PetriNetUnfolderBase]: For 2644422/2644434 co-relation queries the response was YES. [2024-06-20 16:07:30,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87180 conditions, 7712 events. 4562/7712 cut-off events. For 2644422/2644434 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54149 event pairs, 936 based on Foata normal form. 4/7645 useless extension candidates. Maximal degree in co-relation 86965. Up to 6846 conditions per place. [2024-06-20 16:07:30,938 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 489 selfloop transitions, 90 changer transitions 0/620 dead transitions. [2024-06-20 16:07:30,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 620 transitions, 9499 flow [2024-06-20 16:07:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:07:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:07:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-20 16:07:30,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-20 16:07:30,939 INFO L175 Difference]: Start difference. First operand has 479 places, 589 transitions, 6763 flow. Second operand 9 states and 173 transitions. [2024-06-20 16:07:30,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 620 transitions, 9499 flow [2024-06-20 16:07:39,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 620 transitions, 9277 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 16:07:39,748 INFO L231 Difference]: Finished difference. Result has 480 places, 601 transitions, 7245 flow [2024-06-20 16:07:39,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6541, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7245, PETRI_PLACES=480, PETRI_TRANSITIONS=601} [2024-06-20 16:07:39,749 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 436 predicate places. [2024-06-20 16:07:39,749 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 601 transitions, 7245 flow [2024-06-20 16:07:39,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:07:39,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:07:39,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:07:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 16:07:39,749 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:07:39,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:07:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash -921617620, now seen corresponding path program 6 times [2024-06-20 16:07:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:07:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163790660] [2024-06-20 16:07:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:07:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:07:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:07:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:07:41,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:07:41,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163790660] [2024-06-20 16:07:41,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163790660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:07:41,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:07:41,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:07:41,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527102576] [2024-06-20 16:07:41,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:07:41,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:07:41,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:07:41,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:07:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:07:41,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:07:41,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 601 transitions, 7245 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:07:41,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:07:41,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:07:41,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:07:43,238 INFO L124 PetriNetUnfolderBase]: 4559/7705 cut-off events. [2024-06-20 16:07:43,238 INFO L125 PetriNetUnfolderBase]: For 2652258/2652266 co-relation queries the response was YES. [2024-06-20 16:07:43,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87311 conditions, 7705 events. 4559/7705 cut-off events. For 2652258/2652266 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54063 event pairs, 924 based on Foata normal form. 1/7635 useless extension candidates. Maximal degree in co-relation 87095. Up to 7008 conditions per place. [2024-06-20 16:07:43,383 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 558 selfloop transitions, 20 changer transitions 0/619 dead transitions. [2024-06-20 16:07:43,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 619 transitions, 8591 flow [2024-06-20 16:07:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:07:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:07:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-20 16:07:43,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-20 16:07:43,384 INFO L175 Difference]: Start difference. First operand has 480 places, 601 transitions, 7245 flow. Second operand 9 states and 156 transitions. [2024-06-20 16:07:43,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 619 transitions, 8591 flow [2024-06-20 16:07:49,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 619 transitions, 8359 flow, removed 102 selfloop flow, removed 3 redundant places. [2024-06-20 16:07:49,044 INFO L231 Difference]: Finished difference. Result has 487 places, 607 transitions, 7235 flow [2024-06-20 16:07:49,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7235, PETRI_PLACES=487, PETRI_TRANSITIONS=607} [2024-06-20 16:07:49,044 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 443 predicate places. [2024-06-20 16:07:49,044 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 607 transitions, 7235 flow [2024-06-20 16:07:49,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:07:49,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:07:49,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:07:49,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 16:07:49,045 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:07:49,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:07:49,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1226997002, now seen corresponding path program 7 times [2024-06-20 16:07:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:07:49,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255852796] [2024-06-20 16:07:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:07:49,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:07:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:07:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:07:50,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:07:50,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255852796] [2024-06-20 16:07:50,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255852796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:07:50,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:07:50,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:07:50,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980042969] [2024-06-20 16:07:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:07:50,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:07:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:07:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:07:50,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:07:50,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:07:50,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 607 transitions, 7235 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:07:50,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:07:50,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:07:50,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:07:52,554 INFO L124 PetriNetUnfolderBase]: 4553/7700 cut-off events. [2024-06-20 16:07:52,554 INFO L125 PetriNetUnfolderBase]: For 2663018/2663030 co-relation queries the response was YES. [2024-06-20 16:07:52,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86621 conditions, 7700 events. 4553/7700 cut-off events. For 2663018/2663030 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 54054 event pairs, 935 based on Foata normal form. 4/7633 useless extension candidates. Maximal degree in co-relation 86402. Up to 6839 conditions per place. [2024-06-20 16:07:52,696 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 489 selfloop transitions, 95 changer transitions 0/625 dead transitions. [2024-06-20 16:07:52,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 625 transitions, 9163 flow [2024-06-20 16:07:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:07:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:07:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-20 16:07:52,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-20 16:07:52,697 INFO L175 Difference]: Start difference. First operand has 487 places, 607 transitions, 7235 flow. Second operand 9 states and 171 transitions. [2024-06-20 16:07:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 625 transitions, 9163 flow [2024-06-20 16:07:59,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 625 transitions, 8921 flow, removed 110 selfloop flow, removed 6 redundant places. [2024-06-20 16:07:59,280 INFO L231 Difference]: Finished difference. Result has 490 places, 607 transitions, 7197 flow [2024-06-20 16:07:59,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7001, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7197, PETRI_PLACES=490, PETRI_TRANSITIONS=607} [2024-06-20 16:07:59,281 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 446 predicate places. [2024-06-20 16:07:59,281 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 607 transitions, 7197 flow [2024-06-20 16:07:59,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:07:59,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:07:59,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:07:59,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 16:07:59,282 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:07:59,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:07:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash -937286694, now seen corresponding path program 7 times [2024-06-20 16:07:59,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:07:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893187342] [2024-06-20 16:07:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:07:59,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:07:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:08:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:08:00,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:08:00,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893187342] [2024-06-20 16:08:00,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893187342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:08:00,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:08:00,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:08:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214367358] [2024-06-20 16:08:00,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:08:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:08:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:08:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:08:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:08:00,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:08:00,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 607 transitions, 7197 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:00,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:08:00,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:08:00,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:08:02,617 INFO L124 PetriNetUnfolderBase]: 4558/7706 cut-off events. [2024-06-20 16:08:02,617 INFO L125 PetriNetUnfolderBase]: For 2691779/2691789 co-relation queries the response was YES. [2024-06-20 16:08:02,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86779 conditions, 7706 events. 4558/7706 cut-off events. For 2691779/2691789 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54126 event pairs, 944 based on Foata normal form. 10/7642 useless extension candidates. Maximal degree in co-relation 86559. Up to 6881 conditions per place. [2024-06-20 16:08:02,767 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 501 selfloop transitions, 84 changer transitions 0/626 dead transitions. [2024-06-20 16:08:02,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 626 transitions, 8935 flow [2024-06-20 16:08:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:08:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:08:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-20 16:08:02,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-20 16:08:02,768 INFO L175 Difference]: Start difference. First operand has 490 places, 607 transitions, 7197 flow. Second operand 9 states and 166 transitions. [2024-06-20 16:08:02,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 626 transitions, 8935 flow [2024-06-20 16:08:10,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 626 transitions, 8746 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 16:08:10,782 INFO L231 Difference]: Finished difference. Result has 492 places, 613 transitions, 7400 flow [2024-06-20 16:08:10,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7008, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7400, PETRI_PLACES=492, PETRI_TRANSITIONS=613} [2024-06-20 16:08:10,782 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 448 predicate places. [2024-06-20 16:08:10,782 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 613 transitions, 7400 flow [2024-06-20 16:08:10,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:10,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:08:10,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:08:10,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 16:08:10,782 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:08:10,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:08:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1393982724, now seen corresponding path program 8 times [2024-06-20 16:08:10,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:08:10,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675904796] [2024-06-20 16:08:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:08:10,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:08:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:08:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:08:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:08:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675904796] [2024-06-20 16:08:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675904796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:08:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:08:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:08:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280026440] [2024-06-20 16:08:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:08:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:08:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:08:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:08:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:08:12,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:08:12,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 613 transitions, 7400 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:12,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:08:12,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:08:12,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:08:14,284 INFO L124 PetriNetUnfolderBase]: 4563/7717 cut-off events. [2024-06-20 16:08:14,284 INFO L125 PetriNetUnfolderBase]: For 2729356/2729366 co-relation queries the response was YES. [2024-06-20 16:08:14,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87645 conditions, 7717 events. 4563/7717 cut-off events. For 2729356/2729366 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 54231 event pairs, 944 based on Foata normal form. 10/7653 useless extension candidates. Maximal degree in co-relation 87424. Up to 6932 conditions per place. [2024-06-20 16:08:14,431 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 536 selfloop transitions, 52 changer transitions 0/629 dead transitions. [2024-06-20 16:08:14,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 629 transitions, 9046 flow [2024-06-20 16:08:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:08:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:08:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-20 16:08:14,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-20 16:08:14,433 INFO L175 Difference]: Start difference. First operand has 492 places, 613 transitions, 7400 flow. Second operand 9 states and 167 transitions. [2024-06-20 16:08:14,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 629 transitions, 9046 flow [2024-06-20 16:08:22,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 629 transitions, 8891 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-20 16:08:22,737 INFO L231 Difference]: Finished difference. Result has 496 places, 616 transitions, 7467 flow [2024-06-20 16:08:22,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7247, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7467, PETRI_PLACES=496, PETRI_TRANSITIONS=616} [2024-06-20 16:08:22,737 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 452 predicate places. [2024-06-20 16:08:22,738 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 616 transitions, 7467 flow [2024-06-20 16:08:22,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:22,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:08:22,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:08:22,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 16:08:22,738 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:08:22,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:08:22,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1394386344, now seen corresponding path program 9 times [2024-06-20 16:08:22,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:08:22,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449109007] [2024-06-20 16:08:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:08:22,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:08:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:08:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:08:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:08:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449109007] [2024-06-20 16:08:23,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449109007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:08:23,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:08:23,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:08:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361042819] [2024-06-20 16:08:23,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:08:23,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:08:23,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:08:23,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:08:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:08:24,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:08:24,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 616 transitions, 7467 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:24,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:08:24,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:08:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:08:26,138 INFO L124 PetriNetUnfolderBase]: 4566/7723 cut-off events. [2024-06-20 16:08:26,139 INFO L125 PetriNetUnfolderBase]: For 2762253/2762287 co-relation queries the response was YES. [2024-06-20 16:08:26,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87934 conditions, 7723 events. 4566/7723 cut-off events. For 2762253/2762287 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 54311 event pairs, 944 based on Foata normal form. 14/7662 useless extension candidates. Maximal degree in co-relation 87711. Up to 6945 conditions per place. [2024-06-20 16:08:26,285 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 543 selfloop transitions, 48 changer transitions 0/632 dead transitions. [2024-06-20 16:08:26,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 632 transitions, 9125 flow [2024-06-20 16:08:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:08:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:08:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-20 16:08:26,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-20 16:08:26,286 INFO L175 Difference]: Start difference. First operand has 496 places, 616 transitions, 7467 flow. Second operand 9 states and 165 transitions. [2024-06-20 16:08:26,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 632 transitions, 9125 flow [2024-06-20 16:08:34,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 632 transitions, 8861 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-20 16:08:34,336 INFO L231 Difference]: Finished difference. Result has 498 places, 619 transitions, 7421 flow [2024-06-20 16:08:34,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7219, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7421, PETRI_PLACES=498, PETRI_TRANSITIONS=619} [2024-06-20 16:08:34,336 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 454 predicate places. [2024-06-20 16:08:34,336 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 619 transitions, 7421 flow [2024-06-20 16:08:34,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:34,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:08:34,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:08:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 16:08:34,337 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:08:34,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:08:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1394385910, now seen corresponding path program 8 times [2024-06-20 16:08:34,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:08:34,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83886482] [2024-06-20 16:08:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:08:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:08:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:08:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:08:35,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:08:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83886482] [2024-06-20 16:08:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83886482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:08:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:08:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:08:35,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223812851] [2024-06-20 16:08:35,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:08:35,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:08:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:08:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:08:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:08:35,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:08:35,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 619 transitions, 7421 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:35,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:08:35,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:08:35,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:08:37,842 INFO L124 PetriNetUnfolderBase]: 4571/7735 cut-off events. [2024-06-20 16:08:37,842 INFO L125 PetriNetUnfolderBase]: For 2781170/2781206 co-relation queries the response was YES. [2024-06-20 16:08:37,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88135 conditions, 7735 events. 4571/7735 cut-off events. For 2781170/2781206 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 54416 event pairs, 936 based on Foata normal form. 3/7666 useless extension candidates. Maximal degree in co-relation 87911. Up to 6987 conditions per place. [2024-06-20 16:08:37,980 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 561 selfloop transitions, 32 changer transitions 0/634 dead transitions. [2024-06-20 16:08:37,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 634 transitions, 8761 flow [2024-06-20 16:08:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:08:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:08:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-20 16:08:37,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134366925064599 [2024-06-20 16:08:37,982 INFO L175 Difference]: Start difference. First operand has 498 places, 619 transitions, 7421 flow. Second operand 9 states and 160 transitions. [2024-06-20 16:08:37,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 634 transitions, 8761 flow [2024-06-20 16:08:44,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 634 transitions, 8567 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-20 16:08:44,611 INFO L231 Difference]: Finished difference. Result has 500 places, 622 transitions, 7429 flow [2024-06-20 16:08:44,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7227, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7429, PETRI_PLACES=500, PETRI_TRANSITIONS=622} [2024-06-20 16:08:44,611 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 456 predicate places. [2024-06-20 16:08:44,611 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 622 transitions, 7429 flow [2024-06-20 16:08:44,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:44,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:08:44,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:08:44,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 16:08:44,611 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:08:44,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:08:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1256834654, now seen corresponding path program 10 times [2024-06-20 16:08:44,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:08:44,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453943303] [2024-06-20 16:08:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:08:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:08:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:08:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:08:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:08:45,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453943303] [2024-06-20 16:08:45,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453943303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:08:45,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:08:45,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:08:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268455297] [2024-06-20 16:08:45,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:08:45,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:08:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:08:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:08:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:08:45,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:08:45,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 622 transitions, 7429 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:45,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:08:45,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:08:45,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:08:47,936 INFO L124 PetriNetUnfolderBase]: 4567/7723 cut-off events. [2024-06-20 16:08:47,936 INFO L125 PetriNetUnfolderBase]: For 2793230/2793264 co-relation queries the response was YES. [2024-06-20 16:08:48,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87888 conditions, 7723 events. 4567/7723 cut-off events. For 2793230/2793264 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 54259 event pairs, 943 based on Foata normal form. 13/7662 useless extension candidates. Maximal degree in co-relation 87663. Up to 6955 conditions per place. [2024-06-20 16:08:48,080 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 550 selfloop transitions, 43 changer transitions 0/634 dead transitions. [2024-06-20 16:08:48,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 634 transitions, 8643 flow [2024-06-20 16:08:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:08:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:08:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-20 16:08:48,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-20 16:08:48,081 INFO L175 Difference]: Start difference. First operand has 500 places, 622 transitions, 7429 flow. Second operand 9 states and 162 transitions. [2024-06-20 16:08:48,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 634 transitions, 8643 flow [2024-06-20 16:08:56,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 634 transitions, 8393 flow, removed 95 selfloop flow, removed 7 redundant places. [2024-06-20 16:08:56,494 INFO L231 Difference]: Finished difference. Result has 502 places, 622 transitions, 7271 flow [2024-06-20 16:08:56,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7179, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7271, PETRI_PLACES=502, PETRI_TRANSITIONS=622} [2024-06-20 16:08:56,495 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 458 predicate places. [2024-06-20 16:08:56,495 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 622 transitions, 7271 flow [2024-06-20 16:08:56,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:56,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:08:56,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:08:56,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-20 16:08:56,495 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:08:56,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:08:56,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1393982290, now seen corresponding path program 9 times [2024-06-20 16:08:56,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:08:56,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982347833] [2024-06-20 16:08:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:08:56,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:08:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:08:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:08:57,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:08:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982347833] [2024-06-20 16:08:57,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982347833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:08:57,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:08:57,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:08:57,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112478638] [2024-06-20 16:08:57,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:08:57,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:08:57,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:08:57,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:08:57,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:08:57,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:08:57,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 622 transitions, 7271 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:08:57,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:08:57,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:08:57,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:08:59,960 INFO L124 PetriNetUnfolderBase]: 4585/7753 cut-off events. [2024-06-20 16:08:59,961 INFO L125 PetriNetUnfolderBase]: For 2841154/2841170 co-relation queries the response was YES. [2024-06-20 16:09:00,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88607 conditions, 7753 events. 4585/7753 cut-off events. For 2841154/2841170 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 54486 event pairs, 935 based on Foata normal form. 4/7686 useless extension candidates. Maximal degree in co-relation 88381. Up to 6974 conditions per place. [2024-06-20 16:09:00,101 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 558 selfloop transitions, 46 changer transitions 0/645 dead transitions. [2024-06-20 16:09:00,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 645 transitions, 9507 flow [2024-06-20 16:09:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:09:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:09:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-20 16:09:00,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-20 16:09:00,102 INFO L175 Difference]: Start difference. First operand has 502 places, 622 transitions, 7271 flow. Second operand 9 states and 169 transitions. [2024-06-20 16:09:00,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 645 transitions, 9507 flow [2024-06-20 16:09:09,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 645 transitions, 9411 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:09:09,075 INFO L231 Difference]: Finished difference. Result has 503 places, 628 transitions, 7537 flow [2024-06-20 16:09:09,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7175, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7537, PETRI_PLACES=503, PETRI_TRANSITIONS=628} [2024-06-20 16:09:09,075 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 459 predicate places. [2024-06-20 16:09:09,075 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 628 transitions, 7537 flow [2024-06-20 16:09:09,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:09:09,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:09:09,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:09:09,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-20 16:09:09,075 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:09:09,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:09:09,076 INFO L85 PathProgramCache]: Analyzing trace with hash 770314922, now seen corresponding path program 10 times [2024-06-20 16:09:09,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:09:09,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422943457] [2024-06-20 16:09:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:09:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:09:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:09:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:09:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:09:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422943457] [2024-06-20 16:09:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422943457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:09:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:09:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:09:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525318397] [2024-06-20 16:09:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:09:10,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:09:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:09:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:09:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:09:10,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:09:10,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 628 transitions, 7537 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:09:10,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:09:10,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:09:10,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:09:12,486 INFO L124 PetriNetUnfolderBase]: 4582/7749 cut-off events. [2024-06-20 16:09:12,486 INFO L125 PetriNetUnfolderBase]: For 2844890/2844906 co-relation queries the response was YES. [2024-06-20 16:09:12,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88577 conditions, 7749 events. 4582/7749 cut-off events. For 2844890/2844906 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 54435 event pairs, 935 based on Foata normal form. 3/7681 useless extension candidates. Maximal degree in co-relation 88350. Up to 6988 conditions per place. [2024-06-20 16:09:12,635 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 563 selfloop transitions, 44 changer transitions 0/648 dead transitions. [2024-06-20 16:09:12,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 648 transitions, 9069 flow [2024-06-20 16:09:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:09:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:09:12,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-20 16:09:12,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-20 16:09:12,636 INFO L175 Difference]: Start difference. First operand has 503 places, 628 transitions, 7537 flow. Second operand 9 states and 163 transitions. [2024-06-20 16:09:12,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 648 transitions, 9069 flow [2024-06-20 16:09:20,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 648 transitions, 8627 flow, removed 132 selfloop flow, removed 7 redundant places. [2024-06-20 16:09:20,201 INFO L231 Difference]: Finished difference. Result has 506 places, 636 transitions, 7504 flow [2024-06-20 16:09:20,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7219, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7504, PETRI_PLACES=506, PETRI_TRANSITIONS=636} [2024-06-20 16:09:20,202 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 462 predicate places. [2024-06-20 16:09:20,202 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 636 transitions, 7504 flow [2024-06-20 16:09:20,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:09:20,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:09:20,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:09:20,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-20 16:09:20,202 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:09:20,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:09:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1717700840, now seen corresponding path program 1 times [2024-06-20 16:09:20,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:09:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907081723] [2024-06-20 16:09:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:09:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:09:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:09:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:09:21,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:09:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907081723] [2024-06-20 16:09:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907081723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:09:21,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:09:21,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:09:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828208121] [2024-06-20 16:09:21,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:09:21,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:09:21,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:09:21,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:09:21,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:09:21,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:09:21,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 636 transitions, 7504 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:09:21,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:09:21,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:09:21,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:09:23,518 INFO L124 PetriNetUnfolderBase]: 4692/7896 cut-off events. [2024-06-20 16:09:23,518 INFO L125 PetriNetUnfolderBase]: For 2894529/2894529 co-relation queries the response was YES. [2024-06-20 16:09:23,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89117 conditions, 7896 events. 4692/7896 cut-off events. For 2894529/2894529 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 55337 event pairs, 911 based on Foata normal form. 2/7848 useless extension candidates. Maximal degree in co-relation 88889. Up to 6969 conditions per place. [2024-06-20 16:09:23,666 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 544 selfloop transitions, 15 changer transitions 0/660 dead transitions. [2024-06-20 16:09:23,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 660 transitions, 8754 flow [2024-06-20 16:09:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:09:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:09:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-20 16:09:23,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-20 16:09:23,667 INFO L175 Difference]: Start difference. First operand has 506 places, 636 transitions, 7504 flow. Second operand 8 states and 157 transitions. [2024-06-20 16:09:23,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 660 transitions, 8754 flow [2024-06-20 16:09:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 660 transitions, 8590 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-20 16:09:32,933 INFO L231 Difference]: Finished difference. Result has 509 places, 638 transitions, 7457 flow [2024-06-20 16:09:32,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7340, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7457, PETRI_PLACES=509, PETRI_TRANSITIONS=638} [2024-06-20 16:09:32,933 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 465 predicate places. [2024-06-20 16:09:32,933 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 638 transitions, 7457 flow [2024-06-20 16:09:32,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:09:32,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:09:32,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:09:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-20 16:09:32,934 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:09:32,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:09:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1828405250, now seen corresponding path program 2 times [2024-06-20 16:09:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:09:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117361970] [2024-06-20 16:09:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:09:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:09:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:09:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:09:33,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:09:33,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117361970] [2024-06-20 16:09:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117361970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:09:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:09:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:09:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728993504] [2024-06-20 16:09:33,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:09:33,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:09:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:09:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:09:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:09:34,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:09:34,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 638 transitions, 7457 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:09:34,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:09:34,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:09:34,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:09:36,226 INFO L124 PetriNetUnfolderBase]: 4700/7918 cut-off events. [2024-06-20 16:09:36,226 INFO L125 PetriNetUnfolderBase]: For 2926000/2926000 co-relation queries the response was YES. [2024-06-20 16:09:36,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89552 conditions, 7918 events. 4700/7918 cut-off events. For 2926000/2926000 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55625 event pairs, 951 based on Foata normal form. 2/7877 useless extension candidates. Maximal degree in co-relation 89322. Up to 6998 conditions per place. [2024-06-20 16:09:36,389 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 541 selfloop transitions, 16 changer transitions 0/658 dead transitions. [2024-06-20 16:09:36,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 658 transitions, 8697 flow [2024-06-20 16:09:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:09:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:09:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-20 16:09:36,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-20 16:09:36,390 INFO L175 Difference]: Start difference. First operand has 509 places, 638 transitions, 7457 flow. Second operand 8 states and 154 transitions. [2024-06-20 16:09:36,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 658 transitions, 8697 flow [2024-06-20 16:09:44,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 658 transitions, 8596 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-20 16:09:44,946 INFO L231 Difference]: Finished difference. Result has 511 places, 640 transitions, 7479 flow [2024-06-20 16:09:44,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7356, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7479, PETRI_PLACES=511, PETRI_TRANSITIONS=640} [2024-06-20 16:09:44,947 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 467 predicate places. [2024-06-20 16:09:44,947 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 640 transitions, 7479 flow [2024-06-20 16:09:44,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:09:44,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:09:44,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:09:44,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-20 16:09:44,947 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:09:44,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:09:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2116764760, now seen corresponding path program 3 times [2024-06-20 16:09:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:09:44,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180466482] [2024-06-20 16:09:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:09:44,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:09:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:09:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:09:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:09:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180466482] [2024-06-20 16:09:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180466482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:09:46,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:09:46,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:09:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28364502] [2024-06-20 16:09:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:09:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:09:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:09:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:09:46,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:09:46,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:09:46,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 640 transitions, 7479 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:09:46,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:09:46,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:09:46,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:09:48,488 INFO L124 PetriNetUnfolderBase]: 4708/7932 cut-off events. [2024-06-20 16:09:48,488 INFO L125 PetriNetUnfolderBase]: For 2964071/2964071 co-relation queries the response was YES. [2024-06-20 16:09:48,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89910 conditions, 7932 events. 4708/7932 cut-off events. For 2964071/2964071 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 55723 event pairs, 949 based on Foata normal form. 2/7891 useless extension candidates. Maximal degree in co-relation 89679. Up to 7016 conditions per place. [2024-06-20 16:09:48,639 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 543 selfloop transitions, 16 changer transitions 0/660 dead transitions. [2024-06-20 16:09:48,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 660 transitions, 8747 flow [2024-06-20 16:09:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:09:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:09:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:09:48,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 16:09:48,640 INFO L175 Difference]: Start difference. First operand has 511 places, 640 transitions, 7479 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:09:48,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 660 transitions, 8747 flow [2024-06-20 16:09:58,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 660 transitions, 8640 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-20 16:09:58,150 INFO L231 Difference]: Finished difference. Result has 514 places, 645 transitions, 7533 flow [2024-06-20 16:09:58,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7372, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7533, PETRI_PLACES=514, PETRI_TRANSITIONS=645} [2024-06-20 16:09:58,150 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 470 predicate places. [2024-06-20 16:09:58,151 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 645 transitions, 7533 flow [2024-06-20 16:09:58,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:09:58,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:09:58,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:09:58,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-20 16:09:58,151 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:09:58,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:09:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1712929382, now seen corresponding path program 1 times [2024-06-20 16:09:58,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:09:58,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433060861] [2024-06-20 16:09:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:09:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:09:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:09:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:09:59,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:09:59,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433060861] [2024-06-20 16:09:59,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433060861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:09:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:09:59,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:09:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822451653] [2024-06-20 16:09:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:09:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:09:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:09:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:09:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:09:59,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:09:59,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 645 transitions, 7533 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:09:59,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:09:59,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:09:59,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:10:02,150 INFO L124 PetriNetUnfolderBase]: 4809/8027 cut-off events. [2024-06-20 16:10:02,150 INFO L125 PetriNetUnfolderBase]: For 2958131/2958131 co-relation queries the response was YES. [2024-06-20 16:10:02,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90332 conditions, 8027 events. 4809/8027 cut-off events. For 2958131/2958131 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 55673 event pairs, 972 based on Foata normal form. 2/7986 useless extension candidates. Maximal degree in co-relation 90099. Up to 7289 conditions per place. [2024-06-20 16:10:02,322 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 570 selfloop transitions, 25 changer transitions 0/660 dead transitions. [2024-06-20 16:10:02,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 660 transitions, 8759 flow [2024-06-20 16:10:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:10:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:10:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-20 16:10:02,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-20 16:10:02,323 INFO L175 Difference]: Start difference. First operand has 514 places, 645 transitions, 7533 flow. Second operand 9 states and 163 transitions. [2024-06-20 16:10:02,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 660 transitions, 8759 flow [2024-06-20 16:10:11,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 660 transitions, 8648 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-20 16:10:11,868 INFO L231 Difference]: Finished difference. Result has 518 places, 645 transitions, 7479 flow [2024-06-20 16:10:11,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7422, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7479, PETRI_PLACES=518, PETRI_TRANSITIONS=645} [2024-06-20 16:10:11,868 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 474 predicate places. [2024-06-20 16:10:11,868 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 645 transitions, 7479 flow [2024-06-20 16:10:11,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:10:11,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:10:11,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:10:11,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-20 16:10:11,869 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:10:11,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:10:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1157731166, now seen corresponding path program 4 times [2024-06-20 16:10:11,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:10:11,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355706576] [2024-06-20 16:10:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:10:11,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:10:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:10:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:10:12,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:10:12,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355706576] [2024-06-20 16:10:12,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355706576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:10:12,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:10:12,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:10:12,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743877224] [2024-06-20 16:10:12,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:10:12,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:10:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:10:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:10:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:10:13,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-20 16:10:13,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 645 transitions, 7479 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:10:13,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:10:13,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-20 16:10:13,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:10:15,357 INFO L124 PetriNetUnfolderBase]: 4687/7910 cut-off events. [2024-06-20 16:10:15,357 INFO L125 PetriNetUnfolderBase]: For 2963697/2963699 co-relation queries the response was YES. [2024-06-20 16:10:15,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89267 conditions, 7910 events. 4687/7910 cut-off events. For 2963697/2963699 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 55700 event pairs, 949 based on Foata normal form. 4/7871 useless extension candidates. Maximal degree in co-relation 89033. Up to 6989 conditions per place. [2024-06-20 16:10:15,516 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 538 selfloop transitions, 23 changer transitions 0/662 dead transitions. [2024-06-20 16:10:15,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 662 transitions, 8748 flow [2024-06-20 16:10:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:10:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:10:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-20 16:10:15,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-20 16:10:15,517 INFO L175 Difference]: Start difference. First operand has 518 places, 645 transitions, 7479 flow. Second operand 8 states and 151 transitions. [2024-06-20 16:10:15,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 662 transitions, 8748 flow [2024-06-20 16:10:26,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 662 transitions, 8611 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-20 16:10:26,427 INFO L231 Difference]: Finished difference. Result has 519 places, 650 transitions, 7522 flow [2024-06-20 16:10:26,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7342, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7522, PETRI_PLACES=519, PETRI_TRANSITIONS=650} [2024-06-20 16:10:26,427 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 475 predicate places. [2024-06-20 16:10:26,427 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 650 transitions, 7522 flow [2024-06-20 16:10:26,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-20 16:10:26,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:10:26,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:10:26,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-20 16:10:26,428 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-20 16:10:26,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:10:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1006736794, now seen corresponding path program 2 times [2024-06-20 16:10:26,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:10:26,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446025737] [2024-06-20 16:10:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:10:26,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:10:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:10:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:10:28,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:10:28,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446025737] [2024-06-20 16:10:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446025737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:10:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:10:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:10:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015844119] [2024-06-20 16:10:28,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:10:28,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:10:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:10:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:10:28,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:10:28,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-20 16:10:28,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 650 transitions, 7522 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 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) [2024-06-20 16:10:28,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:10:28,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-20 16:10:28,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15