./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.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/mix010.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/mix010.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix010.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-bcb38a6-m [2024-06-04 14:39:46,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:39:46,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:39:46,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:39:46,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:39:46,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:39:46,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:39:46,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:39:46,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:39:46,552 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:39:46,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:39:46,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:39:46,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:39:46,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:39:46,555 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:39:46,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:39:46,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:39:46,555 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:39:46,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:39:46,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:39:46,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:39:46,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:39:46,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:39:46,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:39:46,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:39:46,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:39:46,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:39:46,557 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:39:46,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:39:46,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:39:46,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:39:46,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:39:46,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:39:46,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:39:46,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:39:46,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:39:46,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:39:46,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:39:46,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:39:46,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:39:46,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:39:46,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:39:46,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:39:46,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:39:46,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:39:46,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:39:46,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:39:46,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:39:46,815 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:39:46,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.opt.i [2024-06-04 14:39:47,814 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:39:48,022 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:39:48,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.opt.i [2024-06-04 14:39:48,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e3efc6a/3f621e9a0f234daaa22fa75a2bc5d293/FLAGcd5b7b453 [2024-06-04 14:39:48,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1e3efc6a/3f621e9a0f234daaa22fa75a2bc5d293 [2024-06-04 14:39:48,057 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:39:48,058 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:39:48,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix010.opt.yml/witness.yml [2024-06-04 14:39:48,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:39:48,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:39:48,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:39:48,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:39:48,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:39:48,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:39:48" (1/2) ... [2024-06-04 14:39:48,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d22b046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:39:48, skipping insertion in model container [2024-06-04 14:39:48,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:39:48" (1/2) ... [2024-06-04 14:39:48,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b4c1351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:39:48, skipping insertion in model container [2024-06-04 14:39:48,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:48" (2/2) ... [2024-06-04 14:39:48,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d22b046 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48, skipping insertion in model container [2024-06-04 14:39:48,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:48" (2/2) ... [2024-06-04 14:39:48,236 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:39:48,313 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:39:48,314 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$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:39:48,314 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= z$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_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 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_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:39:48,315 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$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$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_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-04 14:39:48,315 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:39:48,315 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-04 14:39:48,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:39:48,663 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:39:48,684 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:39:48,900 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:39:48,934 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:39:48,934 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48 WrapperNode [2024-06-04 14:39:48,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:39:48,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:39:48,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:39:48,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:39:48,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:48,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,003 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-04 14:39:49,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:39:49,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:39:49,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:39:49,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:39:49,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,028 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,053 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]. [2024-06-04 14:39:49,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:39:49,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:39:49,086 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:39:49,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:39:49,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (1/1) ... [2024-06-04 14:39:49,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:39:49,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:39:49,142 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) [2024-06-04 14:39:49,150 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 [2024-06-04 14:39:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:39:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:39:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:39:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:39:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:39:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:39:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 14:39:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 14:39:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:39:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:39:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:39:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:39:49,177 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:39:49,310 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:39:49,313 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:39:49,624 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:39:49,625 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:39:49,773 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:39:49,773 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:39:49,774 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:39:49 BoogieIcfgContainer [2024-06-04 14:39:49,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:39:49,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:39:49,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:39:49,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:39:49,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:39:48" (1/4) ... [2024-06-04 14:39:49,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2404bc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:39:49, skipping insertion in model container [2024-06-04 14:39:49,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:48" (2/4) ... [2024-06-04 14:39:49,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2404bc3e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:39:49, skipping insertion in model container [2024-06-04 14:39:49,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:48" (3/4) ... [2024-06-04 14:39:49,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2404bc3e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:39:49, skipping insertion in model container [2024-06-04 14:39:49,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:39:49" (4/4) ... [2024-06-04 14:39:49,780 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.opt.i [2024-06-04 14:39:49,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:39:49,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:39:49,795 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:39:49,843 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:39:49,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:39:49,888 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-04 14:39:49,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:39:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:39:49,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-04 14:39:49,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-04 14:39:49,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:39:49,911 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;@23270b51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:39:49,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:39:49,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:39:49,915 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:39:49,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:39:49,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:49,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:39:49,917 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)] === [2024-06-04 14:39:49,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash -409799565, now seen corresponding path program 1 times [2024-06-04 14:39:49,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:49,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242561709] [2024-06-04 14:39:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:49,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:50,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:50,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242561709] [2024-06-04 14:39:50,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242561709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:50,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:50,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:39:50,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620272450] [2024-06-04 14:39:50,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:50,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:39:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:39:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:39:51,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-04 14:39:51,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:51,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:51,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-04 14:39:51,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:51,272 INFO L124 PetriNetUnfolderBase]: 1059/1692 cut-off events. [2024-06-04 14:39:51,272 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-06-04 14:39:51,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 1692 events. 1059/1692 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8821 event pairs, 698 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 3343. Up to 1593 conditions per place. [2024-06-04 14:39:51,285 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-04 14:39:51,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 179 flow [2024-06-04 14:39:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:39:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:39:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-04 14:39:51,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-06-04 14:39:51,296 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 82 transitions. [2024-06-04 14:39:51,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 179 flow [2024-06-04 14:39:51,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:51,300 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-04 14:39:51,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-04 14:39:51,304 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-04 14:39:51,304 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-04 14:39:51,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:51,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:51,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:51,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:39:51,305 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)] === [2024-06-04 14:39:51,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1319629714, now seen corresponding path program 1 times [2024-06-04 14:39:51,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663832483] [2024-06-04 14:39:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:52,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663832483] [2024-06-04 14:39:52,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663832483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:52,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:39:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852585109] [2024-06-04 14:39:52,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:52,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:39:52,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:39:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:39:52,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:39:52,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:52,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:52,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:39:52,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:52,302 INFO L124 PetriNetUnfolderBase]: 1215/1891 cut-off events. [2024-06-04 14:39:52,302 INFO L125 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2024-06-04 14:39:52,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4304 conditions, 1891 events. 1215/1891 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9688 event pairs, 648 based on Foata normal form. 3/1887 useless extension candidates. Maximal degree in co-relation 4289. Up to 1803 conditions per place. [2024-06-04 14:39:52,311 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 41 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-04 14:39:52,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 248 flow [2024-06-04 14:39:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:39:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:39:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-04 14:39:52,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2024-06-04 14:39:52,313 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 103 transitions. [2024-06-04 14:39:52,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 248 flow [2024-06-04 14:39:52,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:39:52,314 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-04 14:39:52,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-04 14:39:52,315 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-04 14:39:52,315 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-04 14:39:52,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:52,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:52,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:52,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:39:52,316 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)] === [2024-06-04 14:39:52,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1253845609, now seen corresponding path program 1 times [2024-06-04 14:39:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062949080] [2024-06-04 14:39:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:53,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062949080] [2024-06-04 14:39:53,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062949080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:53,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:53,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:39:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062202115] [2024-06-04 14:39:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:53,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:39:53,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:39:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:39:53,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:39:53,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 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) [2024-06-04 14:39:53,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:53,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:39:53,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:53,864 INFO L124 PetriNetUnfolderBase]: 1545/2364 cut-off events. [2024-06-04 14:39:53,864 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-04 14:39:53,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5938 conditions, 2364 events. 1545/2364 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11841 event pairs, 575 based on Foata normal form. 6/2357 useless extension candidates. Maximal degree in co-relation 5921. Up to 2233 conditions per place. [2024-06-04 14:39:53,876 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 53 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-04 14:39:53,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 360 flow [2024-06-04 14:39:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-04 14:39:53,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-06-04 14:39:53,878 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 6 states and 140 transitions. [2024-06-04 14:39:53,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 360 flow [2024-06-04 14:39:53,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 340 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:53,880 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 185 flow [2024-06-04 14:39:53,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=122, 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=6, PETRI_FLOW=185, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-04 14:39:53,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2024-06-04 14:39:53,881 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 185 flow [2024-06-04 14:39:53,881 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) [2024-06-04 14:39:53,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:53,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:53,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:39:53,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:53,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1073761965, now seen corresponding path program 1 times [2024-06-04 14:39:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:53,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215713176] [2024-06-04 14:39:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:54,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:54,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215713176] [2024-06-04 14:39:54,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215713176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:54,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:54,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:39:54,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542957120] [2024-06-04 14:39:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:54,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:39:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:39:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:39:54,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:39:54,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:54,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:54,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:39:54,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:55,158 INFO L124 PetriNetUnfolderBase]: 1333/2110 cut-off events. [2024-06-04 14:39:55,159 INFO L125 PetriNetUnfolderBase]: For 2120/2120 co-relation queries the response was YES. [2024-06-04 14:39:55,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 2110 events. 1333/2110 cut-off events. For 2120/2120 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10827 event pairs, 592 based on Foata normal form. 2/2079 useless extension candidates. Maximal degree in co-relation 5746. Up to 1980 conditions per place. [2024-06-04 14:39:55,171 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 44 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-04 14:39:55,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 331 flow [2024-06-04 14:39:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:39:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:39:55,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-04 14:39:55,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-04 14:39:55,173 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 185 flow. Second operand 5 states and 106 transitions. [2024-06-04 14:39:55,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 331 flow [2024-06-04 14:39:55,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 304 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:55,176 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 202 flow [2024-06-04 14:39:55,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-04 14:39:55,177 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-06-04 14:39:55,177 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 202 flow [2024-06-04 14:39:55,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:55,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:55,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:39:55,178 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)] === [2024-06-04 14:39:55,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1073115817, now seen corresponding path program 1 times [2024-06-04 14:39:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697504202] [2024-06-04 14:39:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:55,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:55,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:55,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697504202] [2024-06-04 14:39:55,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697504202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:55,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:55,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:55,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747800322] [2024-06-04 14:39:55,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:55,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:55,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:56,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:39:56,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:56,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:56,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:39:56,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:56,605 INFO L124 PetriNetUnfolderBase]: 1571/2468 cut-off events. [2024-06-04 14:39:56,605 INFO L125 PetriNetUnfolderBase]: For 3658/3658 co-relation queries the response was YES. [2024-06-04 14:39:56,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7212 conditions, 2468 events. 1571/2468 cut-off events. For 3658/3658 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12588 event pairs, 706 based on Foata normal form. 2/2459 useless extension candidates. Maximal degree in co-relation 7191. Up to 2317 conditions per place. [2024-06-04 14:39:56,619 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 49 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-06-04 14:39:56,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 378 flow [2024-06-04 14:39:56,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:39:56,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:39:56,621 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 202 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:39:56,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 378 flow [2024-06-04 14:39:56,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 358 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:56,624 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 236 flow [2024-06-04 14:39:56,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-04 14:39:56,624 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-06-04 14:39:56,625 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 236 flow [2024-06-04 14:39:56,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:56,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:56,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:56,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:39:56,625 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)] === [2024-06-04 14:39:56,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:56,626 INFO L85 PathProgramCache]: Analyzing trace with hash -871422782, now seen corresponding path program 1 times [2024-06-04 14:39:56,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:56,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447865442] [2024-06-04 14:39:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:56,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447865442] [2024-06-04 14:39:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447865442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:57,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:57,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:57,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695762286] [2024-06-04 14:39:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:57,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:57,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:57,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:57,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:57,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:39:57,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:57,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:57,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:39:57,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:57,972 INFO L124 PetriNetUnfolderBase]: 1717/2638 cut-off events. [2024-06-04 14:39:57,972 INFO L125 PetriNetUnfolderBase]: For 6206/6212 co-relation queries the response was YES. [2024-06-04 14:39:57,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 2638 events. 1717/2638 cut-off events. For 6206/6212 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13230 event pairs, 749 based on Foata normal form. 6/2635 useless extension candidates. Maximal degree in co-relation 8420. Up to 2498 conditions per place. [2024-06-04 14:39:57,987 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 54 selfloop transitions, 16 changer transitions 0/77 dead transitions. [2024-06-04 14:39:57,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 486 flow [2024-06-04 14:39:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-04 14:39:57,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810606060606061 [2024-06-04 14:39:57,989 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 236 flow. Second operand 6 states and 127 transitions. [2024-06-04 14:39:57,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 486 flow [2024-06-04 14:39:57,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 456 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:57,992 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 292 flow [2024-06-04 14:39:57,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-06-04 14:39:57,992 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-04 14:39:57,993 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 292 flow [2024-06-04 14:39:57,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:57,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:57,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:57,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:39:57,993 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)] === [2024-06-04 14:39:57,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2095013102, now seen corresponding path program 2 times [2024-06-04 14:39:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415883522] [2024-06-04 14:39:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:58,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415883522] [2024-06-04 14:39:58,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415883522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:58,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:58,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:58,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487963110] [2024-06-04 14:39:58,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:58,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:58,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:39:58,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:58,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:58,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:39:58,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:59,295 INFO L124 PetriNetUnfolderBase]: 1712/2632 cut-off events. [2024-06-04 14:39:59,296 INFO L125 PetriNetUnfolderBase]: For 8384/8390 co-relation queries the response was YES. [2024-06-04 14:39:59,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 2632 events. 1712/2632 cut-off events. For 8384/8390 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13229 event pairs, 752 based on Foata normal form. 6/2628 useless extension candidates. Maximal degree in co-relation 9021. Up to 2493 conditions per place. [2024-06-04 14:39:59,317 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 49 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-04 14:39:59,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 460 flow [2024-06-04 14:39:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 14:39:59,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-04 14:39:59,320 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 292 flow. Second operand 6 states and 122 transitions. [2024-06-04 14:39:59,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 460 flow [2024-06-04 14:39:59,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 426 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:59,325 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 298 flow [2024-06-04 14:39:59,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-04 14:39:59,327 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-06-04 14:39:59,327 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 298 flow [2024-06-04 14:39:59,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:59,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:59,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:59,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:39:59,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:39:59,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2062846758, now seen corresponding path program 1 times [2024-06-04 14:39:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:59,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964805677] [2024-06-04 14:39:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:00,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964805677] [2024-06-04 14:40:00,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964805677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:00,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:00,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354410942] [2024-06-04 14:40:00,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:00,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:00,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:00,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:00,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:00,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:00,887 INFO L124 PetriNetUnfolderBase]: 1567/2475 cut-off events. [2024-06-04 14:40:00,887 INFO L125 PetriNetUnfolderBase]: For 8128/8128 co-relation queries the response was YES. [2024-06-04 14:40:00,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8431 conditions, 2475 events. 1567/2475 cut-off events. For 8128/8128 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12697 event pairs, 652 based on Foata normal form. 4/2466 useless extension candidates. Maximal degree in co-relation 8406. Up to 2294 conditions per place. [2024-06-04 14:40:00,897 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 60 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2024-06-04 14:40:00,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 520 flow [2024-06-04 14:40:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:40:00,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:40:00,900 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 298 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:40:00,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 520 flow [2024-06-04 14:40:00,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 476 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:00,907 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 320 flow [2024-06-04 14:40:00,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-04 14:40:00,908 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2024-06-04 14:40:00,908 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 320 flow [2024-06-04 14:40:00,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:00,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:00,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:00,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:40:00,910 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)] === [2024-06-04 14:40:00,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash -482938248, now seen corresponding path program 1 times [2024-06-04 14:40:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918945202] [2024-06-04 14:40:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918945202] [2024-06-04 14:40:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918945202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:01,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:01,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750264434] [2024-06-04 14:40:01,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:01,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:01,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:01,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 320 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:01,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:01,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:01,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:02,478 INFO L124 PetriNetUnfolderBase]: 1713/2637 cut-off events. [2024-06-04 14:40:02,478 INFO L125 PetriNetUnfolderBase]: For 12167/12167 co-relation queries the response was YES. [2024-06-04 14:40:02,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9759 conditions, 2637 events. 1713/2637 cut-off events. For 12167/12167 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13265 event pairs, 700 based on Foata normal form. 2/2636 useless extension candidates. Maximal degree in co-relation 9734. Up to 2498 conditions per place. [2024-06-04 14:40:02,492 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 67 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-04 14:40:02,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 572 flow [2024-06-04 14:40:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 14:40:02,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-04 14:40:02,496 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 320 flow. Second operand 7 states and 144 transitions. [2024-06-04 14:40:02,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 572 flow [2024-06-04 14:40:02,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 530 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:02,505 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 346 flow [2024-06-04 14:40:02,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-04 14:40:02,506 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2024-06-04 14:40:02,506 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 346 flow [2024-06-04 14:40:02,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:02,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:02,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:02,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:40:02,507 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)] === [2024-06-04 14:40:02,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1244301016, now seen corresponding path program 2 times [2024-06-04 14:40:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037735404] [2024-06-04 14:40:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:03,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037735404] [2024-06-04 14:40:03,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037735404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:03,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:03,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:03,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042892460] [2024-06-04 14:40:03,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:03,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:03,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:03,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:03,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:03,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:03,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:03,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:03,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:03,991 INFO L124 PetriNetUnfolderBase]: 1722/2661 cut-off events. [2024-06-04 14:40:03,991 INFO L125 PetriNetUnfolderBase]: For 15409/15415 co-relation queries the response was YES. [2024-06-04 14:40:03,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10412 conditions, 2661 events. 1722/2661 cut-off events. For 15409/15415 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13498 event pairs, 702 based on Foata normal form. 6/2663 useless extension candidates. Maximal degree in co-relation 10386. Up to 2465 conditions per place. [2024-06-04 14:40:04,007 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 60 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2024-06-04 14:40:04,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 678 flow [2024-06-04 14:40:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-04 14:40:04,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:40:04,009 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 346 flow. Second operand 7 states and 147 transitions. [2024-06-04 14:40:04,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 678 flow [2024-06-04 14:40:04,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 634 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:04,016 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 432 flow [2024-06-04 14:40:04,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-04 14:40:04,017 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2024-06-04 14:40:04,017 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 432 flow [2024-06-04 14:40:04,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:04,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:04,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:04,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:40:04,018 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)] === [2024-06-04 14:40:04,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -478770890, now seen corresponding path program 1 times [2024-06-04 14:40:04,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:04,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601134331] [2024-06-04 14:40:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:04,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601134331] [2024-06-04 14:40:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601134331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:04,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765493543] [2024-06-04 14:40:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:04,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:05,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:05,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:05,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:05,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:05,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:05,670 INFO L124 PetriNetUnfolderBase]: 1844/2788 cut-off events. [2024-06-04 14:40:05,670 INFO L125 PetriNetUnfolderBase]: For 19125/19131 co-relation queries the response was YES. [2024-06-04 14:40:05,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11477 conditions, 2788 events. 1844/2788 cut-off events. For 19125/19131 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13725 event pairs, 752 based on Foata normal form. 3/2787 useless extension candidates. Maximal degree in co-relation 11450. Up to 2651 conditions per place. [2024-06-04 14:40:05,684 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 71 selfloop transitions, 23 changer transitions 0/99 dead transitions. [2024-06-04 14:40:05,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 99 transitions, 776 flow [2024-06-04 14:40:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-04 14:40:05,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-04 14:40:05,685 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 432 flow. Second operand 7 states and 141 transitions. [2024-06-04 14:40:05,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 99 transitions, 776 flow [2024-06-04 14:40:05,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 734 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:05,694 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 506 flow [2024-06-04 14:40:05,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-06-04 14:40:05,695 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-06-04 14:40:05,695 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 506 flow [2024-06-04 14:40:05,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:05,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:05,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:05,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:40:05,696 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)] === [2024-06-04 14:40:05,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash 520898358, now seen corresponding path program 2 times [2024-06-04 14:40:05,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:05,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453492779] [2024-06-04 14:40:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:05,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:06,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:06,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453492779] [2024-06-04 14:40:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453492779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:06,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:06,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948506349] [2024-06-04 14:40:06,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:06,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:06,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:06,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 506 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:06,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:06,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:06,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:07,279 INFO L124 PetriNetUnfolderBase]: 1855/2805 cut-off events. [2024-06-04 14:40:07,279 INFO L125 PetriNetUnfolderBase]: For 22696/22702 co-relation queries the response was YES. [2024-06-04 14:40:07,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12201 conditions, 2805 events. 1855/2805 cut-off events. For 22696/22702 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13778 event pairs, 751 based on Foata normal form. 6/2806 useless extension candidates. Maximal degree in co-relation 12172. Up to 2663 conditions per place. [2024-06-04 14:40:07,293 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 68 selfloop transitions, 26 changer transitions 0/99 dead transitions. [2024-06-04 14:40:07,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 824 flow [2024-06-04 14:40:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:40:07,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:40:07,295 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 506 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:40:07,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 824 flow [2024-06-04 14:40:07,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 788 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:07,307 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 564 flow [2024-06-04 14:40:07,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-06-04 14:40:07,307 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-06-04 14:40:07,307 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 564 flow [2024-06-04 14:40:07,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:07,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:07,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:07,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:40:07,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:07,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash -472341986, now seen corresponding path program 3 times [2024-06-04 14:40:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023946346] [2024-06-04 14:40:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023946346] [2024-06-04 14:40:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023946346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:08,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:08,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314965679] [2024-06-04 14:40:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:08,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:08,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:08,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:08,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:08,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:08,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:08,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:08,776 INFO L124 PetriNetUnfolderBase]: 1745/2690 cut-off events. [2024-06-04 14:40:08,777 INFO L125 PetriNetUnfolderBase]: For 25550/25553 co-relation queries the response was YES. [2024-06-04 14:40:08,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12038 conditions, 2690 events. 1745/2690 cut-off events. For 25550/25553 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13544 event pairs, 706 based on Foata normal form. 2/2685 useless extension candidates. Maximal degree in co-relation 12007. Up to 2487 conditions per place. [2024-06-04 14:40:08,791 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 61 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-04 14:40:08,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 786 flow [2024-06-04 14:40:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-04 14:40:08,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-06-04 14:40:08,792 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 564 flow. Second operand 7 states and 142 transitions. [2024-06-04 14:40:08,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 786 flow [2024-06-04 14:40:08,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 692 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:08,805 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 530 flow [2024-06-04 14:40:08,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-04 14:40:08,805 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-04 14:40:08,805 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 530 flow [2024-06-04 14:40:08,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:08,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:08,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:08,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:40:08,806 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)] === [2024-06-04 14:40:08,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash -644825180, now seen corresponding path program 3 times [2024-06-04 14:40:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:08,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641827060] [2024-06-04 14:40:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:09,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641827060] [2024-06-04 14:40:09,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641827060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:09,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:09,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:40:09,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942337925] [2024-06-04 14:40:09,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:09,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:40:09,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:09,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:40:09,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:40:09,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:09,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 530 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:09,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:09,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:09,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:10,257 INFO L124 PetriNetUnfolderBase]: 1845/2791 cut-off events. [2024-06-04 14:40:10,257 INFO L125 PetriNetUnfolderBase]: For 28383/28389 co-relation queries the response was YES. [2024-06-04 14:40:10,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12632 conditions, 2791 events. 1845/2791 cut-off events. For 28383/28389 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13758 event pairs, 751 based on Foata normal form. 6/2792 useless extension candidates. Maximal degree in co-relation 12600. Up to 2651 conditions per place. [2024-06-04 14:40:10,272 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 65 selfloop transitions, 27 changer transitions 0/97 dead transitions. [2024-06-04 14:40:10,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 97 transitions, 762 flow [2024-06-04 14:40:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:40:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:40:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-04 14:40:10,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2024-06-04 14:40:10,274 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 530 flow. Second operand 7 states and 135 transitions. [2024-06-04 14:40:10,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 97 transitions, 762 flow [2024-06-04 14:40:10,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 678 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:10,294 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 508 flow [2024-06-04 14:40:10,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-06-04 14:40:10,295 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2024-06-04 14:40:10,295 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 508 flow [2024-06-04 14:40:10,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:10,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:10,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:10,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:40:10,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:10,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:10,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1547456478, now seen corresponding path program 1 times [2024-06-04 14:40:10,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89600267] [2024-06-04 14:40:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:10,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:11,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:11,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89600267] [2024-06-04 14:40:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89600267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:11,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:11,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:40:11,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853710233] [2024-06-04 14:40:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:11,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:40:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:40:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:40:11,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:40:11,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-04 14:40:11,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:11,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:40:11,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:11,565 INFO L124 PetriNetUnfolderBase]: 1386/2315 cut-off events. [2024-06-04 14:40:11,565 INFO L125 PetriNetUnfolderBase]: For 26288/26288 co-relation queries the response was YES. [2024-06-04 14:40:11,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10493 conditions, 2315 events. 1386/2315 cut-off events. For 26288/26288 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12690 event pairs, 588 based on Foata normal form. 1/2313 useless extension candidates. Maximal degree in co-relation 10460. Up to 2045 conditions per place. [2024-06-04 14:40:11,577 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 63 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2024-06-04 14:40:11,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 690 flow [2024-06-04 14:40:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:40:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:40:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-04 14:40:11,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-04 14:40:11,578 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 508 flow. Second operand 5 states and 106 transitions. [2024-06-04 14:40:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 690 flow [2024-06-04 14:40:11,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 626 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:11,591 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 492 flow [2024-06-04 14:40:11,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-04 14:40:11,591 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-04 14:40:11,591 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 492 flow [2024-06-04 14:40:11,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-04 14:40:11,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:11,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:11,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:40:11,592 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)] === [2024-06-04 14:40:11,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1337440360, now seen corresponding path program 1 times [2024-06-04 14:40:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:11,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443810673] [2024-06-04 14:40:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:11,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:12,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443810673] [2024-06-04 14:40:12,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443810673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:12,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:12,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067858729] [2024-06-04 14:40:12,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:12,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:12,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:12,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 492 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:12,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:12,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:12,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:13,298 INFO L124 PetriNetUnfolderBase]: 1853/2797 cut-off events. [2024-06-04 14:40:13,298 INFO L125 PetriNetUnfolderBase]: For 34667/34667 co-relation queries the response was YES. [2024-06-04 14:40:13,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13380 conditions, 2797 events. 1853/2797 cut-off events. For 34667/34667 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13683 event pairs, 722 based on Foata normal form. 2/2796 useless extension candidates. Maximal degree in co-relation 13346. Up to 2693 conditions per place. [2024-06-04 14:40:13,313 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 91 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2024-06-04 14:40:13,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 818 flow [2024-06-04 14:40:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:40:13,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:40:13,315 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 492 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:40:13,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 818 flow [2024-06-04 14:40:13,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 792 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:13,330 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 550 flow [2024-06-04 14:40:13,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=550, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2024-06-04 14:40:13,330 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-06-04 14:40:13,330 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 550 flow [2024-06-04 14:40:13,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:13,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:13,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:13,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:40:13,331 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)] === [2024-06-04 14:40:13,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 81375804, now seen corresponding path program 2 times [2024-06-04 14:40:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:13,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323954157] [2024-06-04 14:40:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:13,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323954157] [2024-06-04 14:40:14,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323954157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:14,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:14,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:14,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462366150] [2024-06-04 14:40:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:14,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:14,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:14,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:14,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:14,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:14,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 550 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:14,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:14,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:14,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:15,138 INFO L124 PetriNetUnfolderBase]: 1880/2846 cut-off events. [2024-06-04 14:40:15,139 INFO L125 PetriNetUnfolderBase]: For 40293/40296 co-relation queries the response was YES. [2024-06-04 14:40:15,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14287 conditions, 2846 events. 1880/2846 cut-off events. For 40293/40296 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14027 event pairs, 730 based on Foata normal form. 2/2844 useless extension candidates. Maximal degree in co-relation 14252. Up to 2610 conditions per place. [2024-06-04 14:40:15,153 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 75 selfloop transitions, 43 changer transitions 0/123 dead transitions. [2024-06-04 14:40:15,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 1110 flow [2024-06-04 14:40:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-04 14:40:15,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:40:15,157 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 550 flow. Second operand 8 states and 164 transitions. [2024-06-04 14:40:15,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 1110 flow [2024-06-04 14:40:15,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 123 transitions, 1050 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:15,177 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 716 flow [2024-06-04 14:40:15,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=716, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2024-06-04 14:40:15,178 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-06-04 14:40:15,178 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 716 flow [2024-06-04 14:40:15,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:15,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:15,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:40:15,179 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:15,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash 81381601, now seen corresponding path program 1 times [2024-06-04 14:40:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:15,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737308276] [2024-06-04 14:40:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:16,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:16,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737308276] [2024-06-04 14:40:16,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737308276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:16,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:16,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:16,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73262092] [2024-06-04 14:40:16,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:16,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:16,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:16,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:16,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:16,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 716 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:16,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:16,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:16,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:16,968 INFO L124 PetriNetUnfolderBase]: 1902/2883 cut-off events. [2024-06-04 14:40:16,969 INFO L125 PetriNetUnfolderBase]: For 46761/46764 co-relation queries the response was YES. [2024-06-04 14:40:16,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15088 conditions, 2883 events. 1902/2883 cut-off events. For 46761/46764 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14269 event pairs, 680 based on Foata normal form. 4/2883 useless extension candidates. Maximal degree in co-relation 15052. Up to 2659 conditions per place. [2024-06-04 14:40:16,984 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 93 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-06-04 14:40:16,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 1180 flow [2024-06-04 14:40:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:40:16,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:40:16,986 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 716 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:40:16,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 1180 flow [2024-06-04 14:40:17,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 130 transitions, 1116 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-04 14:40:17,006 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 802 flow [2024-06-04 14:40:17,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=802, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2024-06-04 14:40:17,006 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-06-04 14:40:17,006 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 802 flow [2024-06-04 14:40:17,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:17,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:17,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:17,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:40:17,007 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)] === [2024-06-04 14:40:17,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:17,007 INFO L85 PathProgramCache]: Analyzing trace with hash 81381384, now seen corresponding path program 3 times [2024-06-04 14:40:17,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766351431] [2024-06-04 14:40:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766351431] [2024-06-04 14:40:17,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766351431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:17,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:17,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010811431] [2024-06-04 14:40:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:17,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:17,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:18,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:18,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 802 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:18,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:18,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:18,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:18,804 INFO L124 PetriNetUnfolderBase]: 1897/2876 cut-off events. [2024-06-04 14:40:18,804 INFO L125 PetriNetUnfolderBase]: For 51531/51534 co-relation queries the response was YES. [2024-06-04 14:40:18,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15671 conditions, 2876 events. 1897/2876 cut-off events. For 51531/51534 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14261 event pairs, 708 based on Foata normal form. 2/2874 useless extension candidates. Maximal degree in co-relation 15633. Up to 2637 conditions per place. [2024-06-04 14:40:18,819 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 78 selfloop transitions, 44 changer transitions 0/127 dead transitions. [2024-06-04 14:40:18,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 1186 flow [2024-06-04 14:40:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 14:40:18,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-04 14:40:18,837 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 802 flow. Second operand 8 states and 161 transitions. [2024-06-04 14:40:18,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 1186 flow [2024-06-04 14:40:18,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 1110 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:18,884 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 822 flow [2024-06-04 14:40:18,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-06-04 14:40:18,884 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-06-04 14:40:18,884 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 822 flow [2024-06-04 14:40:18,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:18,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:18,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:18,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:40:18,885 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)] === [2024-06-04 14:40:18,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:18,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1032024216, now seen corresponding path program 4 times [2024-06-04 14:40:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:18,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010267929] [2024-06-04 14:40:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:18,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:19,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:19,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010267929] [2024-06-04 14:40:19,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010267929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:19,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:19,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399376993] [2024-06-04 14:40:19,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:19,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:19,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:19,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 822 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:19,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:19,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:19,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:20,602 INFO L124 PetriNetUnfolderBase]: 1908/2895 cut-off events. [2024-06-04 14:40:20,602 INFO L125 PetriNetUnfolderBase]: For 56537/56540 co-relation queries the response was YES. [2024-06-04 14:40:20,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16104 conditions, 2895 events. 1908/2895 cut-off events. For 56537/56540 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14307 event pairs, 714 based on Foata normal form. 2/2890 useless extension candidates. Maximal degree in co-relation 16064. Up to 2649 conditions per place. [2024-06-04 14:40:20,618 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 75 selfloop transitions, 47 changer transitions 0/127 dead transitions. [2024-06-04 14:40:20,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 127 transitions, 1256 flow [2024-06-04 14:40:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:40:20,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:40:20,620 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 822 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:40:20,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 127 transitions, 1256 flow [2024-06-04 14:40:20,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 1154 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:20,646 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 876 flow [2024-06-04 14:40:20,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=876, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-06-04 14:40:20,647 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-06-04 14:40:20,647 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 876 flow [2024-06-04 14:40:20,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:20,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:20,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:20,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:40:20,648 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)] === [2024-06-04 14:40:20,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 225272131, now seen corresponding path program 2 times [2024-06-04 14:40:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:20,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061425759] [2024-06-04 14:40:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:21,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:21,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061425759] [2024-06-04 14:40:21,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061425759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:21,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:21,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635449989] [2024-06-04 14:40:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:21,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:21,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:21,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 876 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:21,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:21,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:21,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:22,015 INFO L124 PetriNetUnfolderBase]: 1930/2930 cut-off events. [2024-06-04 14:40:22,015 INFO L125 PetriNetUnfolderBase]: For 61885/61891 co-relation queries the response was YES. [2024-06-04 14:40:22,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16520 conditions, 2930 events. 1930/2930 cut-off events. For 61885/61891 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14518 event pairs, 669 based on Foata normal form. 8/2933 useless extension candidates. Maximal degree in co-relation 16479. Up to 2687 conditions per place. [2024-06-04 14:40:22,032 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 93 selfloop transitions, 35 changer transitions 0/133 dead transitions. [2024-06-04 14:40:22,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 133 transitions, 1320 flow [2024-06-04 14:40:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:40:22,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:40:22,034 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 876 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:40:22,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 133 transitions, 1320 flow [2024-06-04 14:40:22,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 133 transitions, 1176 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:22,064 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 852 flow [2024-06-04 14:40:22,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=852, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2024-06-04 14:40:22,065 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2024-06-04 14:40:22,065 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 852 flow [2024-06-04 14:40:22,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:22,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:22,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:22,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:40:22,066 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)] === [2024-06-04 14:40:22,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1757692462, now seen corresponding path program 5 times [2024-06-04 14:40:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:22,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724998783] [2024-06-04 14:40:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:22,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:22,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:22,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724998783] [2024-06-04 14:40:22,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724998783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:22,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:22,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:22,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976147239] [2024-06-04 14:40:22,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:22,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:22,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:22,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:22,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 852 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:22,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:22,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:22,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:23,668 INFO L124 PetriNetUnfolderBase]: 1941/2953 cut-off events. [2024-06-04 14:40:23,668 INFO L125 PetriNetUnfolderBase]: For 66634/66637 co-relation queries the response was YES. [2024-06-04 14:40:23,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16814 conditions, 2953 events. 1941/2953 cut-off events. For 66634/66637 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14672 event pairs, 719 based on Foata normal form. 2/2948 useless extension candidates. Maximal degree in co-relation 16772. Up to 2693 conditions per place. [2024-06-04 14:40:23,685 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 79 selfloop transitions, 49 changer transitions 0/133 dead transitions. [2024-06-04 14:40:23,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 1294 flow [2024-06-04 14:40:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:40:23,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:40:23,687 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 852 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:40:23,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 1294 flow [2024-06-04 14:40:23,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 133 transitions, 1190 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:23,715 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 896 flow [2024-06-04 14:40:23,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=896, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-06-04 14:40:23,716 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 54 predicate places. [2024-06-04 14:40:23,716 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 896 flow [2024-06-04 14:40:23,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:23,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:23,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:23,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:40:23,717 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)] === [2024-06-04 14:40:23,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1750073685, now seen corresponding path program 3 times [2024-06-04 14:40:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245128784] [2024-06-04 14:40:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:23,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:24,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:24,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245128784] [2024-06-04 14:40:24,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245128784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:24,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:24,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:24,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845058176] [2024-06-04 14:40:24,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:24,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:24,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:24,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:24,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 896 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:24,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:24,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:24,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:25,173 INFO L124 PetriNetUnfolderBase]: 1963/2988 cut-off events. [2024-06-04 14:40:25,173 INFO L125 PetriNetUnfolderBase]: For 72304/72310 co-relation queries the response was YES. [2024-06-04 14:40:25,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17190 conditions, 2988 events. 1963/2988 cut-off events. For 72304/72310 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14879 event pairs, 671 based on Foata normal form. 8/2991 useless extension candidates. Maximal degree in co-relation 17147. Up to 2722 conditions per place. [2024-06-04 14:40:25,189 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 92 selfloop transitions, 41 changer transitions 0/138 dead transitions. [2024-06-04 14:40:25,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 138 transitions, 1356 flow [2024-06-04 14:40:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:40:25,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:40:25,190 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 896 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:40:25,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 138 transitions, 1356 flow [2024-06-04 14:40:25,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 138 transitions, 1244 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:25,217 INFO L231 Difference]: Finished difference. Result has 102 places, 111 transitions, 916 flow [2024-06-04 14:40:25,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=916, PETRI_PLACES=102, PETRI_TRANSITIONS=111} [2024-06-04 14:40:25,218 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-06-04 14:40:25,218 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 111 transitions, 916 flow [2024-06-04 14:40:25,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:25,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:25,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:25,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:40:25,219 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:25,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1750340812, now seen corresponding path program 6 times [2024-06-04 14:40:25,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:25,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67953308] [2024-06-04 14:40:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:25,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67953308] [2024-06-04 14:40:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67953308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:26,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764622916] [2024-06-04 14:40:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:26,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:26,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 111 transitions, 916 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:26,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:26,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:26,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:26,827 INFO L124 PetriNetUnfolderBase]: 1958/2983 cut-off events. [2024-06-04 14:40:26,828 INFO L125 PetriNetUnfolderBase]: For 77082/77085 co-relation queries the response was YES. [2024-06-04 14:40:26,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17362 conditions, 2983 events. 1958/2983 cut-off events. For 77082/77085 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14903 event pairs, 719 based on Foata normal form. 2/2978 useless extension candidates. Maximal degree in co-relation 17318. Up to 2720 conditions per place. [2024-06-04 14:40:26,847 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 77 selfloop transitions, 52 changer transitions 0/134 dead transitions. [2024-06-04 14:40:26,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 1232 flow [2024-06-04 14:40:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:40:26,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:40:26,849 INFO L175 Difference]: Start difference. First operand has 102 places, 111 transitions, 916 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:40:26,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 1232 flow [2024-06-04 14:40:26,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 1102 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:26,888 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 898 flow [2024-06-04 14:40:26,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=898, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2024-06-04 14:40:26,888 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-04 14:40:26,889 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 898 flow [2024-06-04 14:40:26,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:26,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:26,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:26,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:40:26,889 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)] === [2024-06-04 14:40:26,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1750340595, now seen corresponding path program 4 times [2024-06-04 14:40:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683962499] [2024-06-04 14:40:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:27,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:27,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683962499] [2024-06-04 14:40:27,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683962499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:27,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:27,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071203067] [2024-06-04 14:40:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:27,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:27,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:27,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:27,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:27,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:28,474 INFO L124 PetriNetUnfolderBase]: 1948/2967 cut-off events. [2024-06-04 14:40:28,474 INFO L125 PetriNetUnfolderBase]: For 81596/81602 co-relation queries the response was YES. [2024-06-04 14:40:28,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17339 conditions, 2967 events. 1948/2967 cut-off events. For 81596/81602 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14785 event pairs, 669 based on Foata normal form. 8/2970 useless extension candidates. Maximal degree in co-relation 17294. Up to 2707 conditions per place. [2024-06-04 14:40:28,491 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 93 selfloop transitions, 39 changer transitions 0/137 dead transitions. [2024-06-04 14:40:28,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 137 transitions, 1226 flow [2024-06-04 14:40:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:40:28,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:40:28,493 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 898 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:40:28,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 137 transitions, 1226 flow [2024-06-04 14:40:28,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 137 transitions, 1080 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:28,532 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 838 flow [2024-06-04 14:40:28,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2024-06-04 14:40:28,532 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-04 14:40:28,532 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 838 flow [2024-06-04 14:40:28,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:28,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:28,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:28,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:40:28,533 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:28,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash -726509008, now seen corresponding path program 1 times [2024-06-04 14:40:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:28,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108689605] [2024-06-04 14:40:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:29,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:29,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108689605] [2024-06-04 14:40:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108689605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:29,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:29,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:29,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621409354] [2024-06-04 14:40:29,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:29,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:29,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:29,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 14:40:29,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 838 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 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) [2024-06-04 14:40:29,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:29,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 14:40:29,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:30,078 INFO L124 PetriNetUnfolderBase]: 1470/2468 cut-off events. [2024-06-04 14:40:30,078 INFO L125 PetriNetUnfolderBase]: For 71867/71867 co-relation queries the response was YES. [2024-06-04 14:40:30,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14272 conditions, 2468 events. 1470/2468 cut-off events. For 71867/71867 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13646 event pairs, 564 based on Foata normal form. 2/2467 useless extension candidates. Maximal degree in co-relation 14226. Up to 2122 conditions per place. [2024-06-04 14:40:30,096 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 85 selfloop transitions, 11 changer transitions 0/124 dead transitions. [2024-06-04 14:40:30,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 124 transitions, 1078 flow [2024-06-04 14:40:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-04 14:40:30,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:40:30,098 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 838 flow. Second operand 6 states and 124 transitions. [2024-06-04 14:40:30,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 124 transitions, 1078 flow [2024-06-04 14:40:30,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 124 transitions, 974 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:30,131 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 792 flow [2024-06-04 14:40:30,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=97, 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=792, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2024-06-04 14:40:30,132 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2024-06-04 14:40:30,132 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 792 flow [2024-06-04 14:40:30,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 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) [2024-06-04 14:40:30,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:30,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:30,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:40:30,132 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)] === [2024-06-04 14:40:30,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:30,133 INFO L85 PathProgramCache]: Analyzing trace with hash -542042701, now seen corresponding path program 1 times [2024-06-04 14:40:30,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:30,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48887549] [2024-06-04 14:40:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:31,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:31,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48887549] [2024-06-04 14:40:31,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48887549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:31,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:31,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603144467] [2024-06-04 14:40:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:31,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:31,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:31,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:31,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 792 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:31,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:31,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:31,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:31,852 INFO L124 PetriNetUnfolderBase]: 1881/2922 cut-off events. [2024-06-04 14:40:31,852 INFO L125 PetriNetUnfolderBase]: For 92322/92322 co-relation queries the response was YES. [2024-06-04 14:40:31,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17672 conditions, 2922 events. 1881/2922 cut-off events. For 92322/92322 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14976 event pairs, 464 based on Foata normal form. 4/2923 useless extension candidates. Maximal degree in co-relation 17625. Up to 2630 conditions per place. [2024-06-04 14:40:31,870 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 119 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-04 14:40:31,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 155 transitions, 1338 flow [2024-06-04 14:40:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-04 14:40:31,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-04 14:40:31,871 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 792 flow. Second operand 9 states and 183 transitions. [2024-06-04 14:40:31,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 155 transitions, 1338 flow [2024-06-04 14:40:31,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 155 transitions, 1302 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:31,930 INFO L231 Difference]: Finished difference. Result has 108 places, 118 transitions, 883 flow [2024-06-04 14:40:31,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=883, PETRI_PLACES=108, PETRI_TRANSITIONS=118} [2024-06-04 14:40:31,930 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-06-04 14:40:31,930 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 118 transitions, 883 flow [2024-06-04 14:40:31,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:31,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:31,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:40:31,931 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)] === [2024-06-04 14:40:31,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1887611835, now seen corresponding path program 2 times [2024-06-04 14:40:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:31,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328018317] [2024-06-04 14:40:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:32,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328018317] [2024-06-04 14:40:32,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328018317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:32,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:32,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:32,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398009878] [2024-06-04 14:40:32,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:32,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:32,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:32,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:32,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 118 transitions, 883 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:32,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:32,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:32,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:33,568 INFO L124 PetriNetUnfolderBase]: 1873/2905 cut-off events. [2024-06-04 14:40:33,568 INFO L125 PetriNetUnfolderBase]: For 98327/98327 co-relation queries the response was YES. [2024-06-04 14:40:33,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17938 conditions, 2905 events. 1873/2905 cut-off events. For 98327/98327 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14871 event pairs, 622 based on Foata normal form. 4/2906 useless extension candidates. Maximal degree in co-relation 17890. Up to 2677 conditions per place. [2024-06-04 14:40:33,587 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 116 selfloop transitions, 16 changer transitions 0/148 dead transitions. [2024-06-04 14:40:33,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 148 transitions, 1223 flow [2024-06-04 14:40:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 14:40:33,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-04 14:40:33,589 INFO L175 Difference]: Start difference. First operand has 108 places, 118 transitions, 883 flow. Second operand 8 states and 162 transitions. [2024-06-04 14:40:33,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 148 transitions, 1223 flow [2024-06-04 14:40:33,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 148 transitions, 1139 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:33,661 INFO L231 Difference]: Finished difference. Result has 111 places, 118 transitions, 838 flow [2024-06-04 14:40:33,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=111, PETRI_TRANSITIONS=118} [2024-06-04 14:40:33,662 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2024-06-04 14:40:33,662 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 118 transitions, 838 flow [2024-06-04 14:40:33,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:33,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:33,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:33,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:40:33,663 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:33,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1887606875, now seen corresponding path program 1 times [2024-06-04 14:40:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:33,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014633825] [2024-06-04 14:40:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:33,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:34,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:34,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014633825] [2024-06-04 14:40:34,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014633825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:34,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:34,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:34,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881796165] [2024-06-04 14:40:34,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:34,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:34,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:34,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:34,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 118 transitions, 838 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:34,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:34,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:34,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:35,195 INFO L124 PetriNetUnfolderBase]: 1995/3042 cut-off events. [2024-06-04 14:40:35,195 INFO L125 PetriNetUnfolderBase]: For 106526/106526 co-relation queries the response was YES. [2024-06-04 14:40:35,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18825 conditions, 3042 events. 1995/3042 cut-off events. For 106526/106526 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15182 event pairs, 646 based on Foata normal form. 4/3043 useless extension candidates. Maximal degree in co-relation 18775. Up to 2888 conditions per place. [2024-06-04 14:40:35,215 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 130 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-04 14:40:35,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 155 transitions, 1272 flow [2024-06-04 14:40:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:40:35,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:40:35,216 INFO L175 Difference]: Start difference. First operand has 111 places, 118 transitions, 838 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:40:35,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 155 transitions, 1272 flow [2024-06-04 14:40:35,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 155 transitions, 1235 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:35,268 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 903 flow [2024-06-04 14:40:35,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=903, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2024-06-04 14:40:35,270 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2024-06-04 14:40:35,271 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 903 flow [2024-06-04 14:40:35,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:35,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:35,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:35,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:40:35,271 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:35,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1772320665, now seen corresponding path program 3 times [2024-06-04 14:40:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:35,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683992268] [2024-06-04 14:40:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:35,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:36,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:36,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683992268] [2024-06-04 14:40:36,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683992268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:36,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:36,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:36,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647481002] [2024-06-04 14:40:36,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:36,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:36,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:36,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:36,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 903 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:36,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:36,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:36,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:36,986 INFO L124 PetriNetUnfolderBase]: 1909/2970 cut-off events. [2024-06-04 14:40:36,987 INFO L125 PetriNetUnfolderBase]: For 113988/113991 co-relation queries the response was YES. [2024-06-04 14:40:36,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19019 conditions, 2970 events. 1909/2970 cut-off events. For 113988/113991 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15275 event pairs, 605 based on Foata normal form. 6/2972 useless extension candidates. Maximal degree in co-relation 18968. Up to 2688 conditions per place. [2024-06-04 14:40:37,006 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 106 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-04 14:40:37,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 150 transitions, 1283 flow [2024-06-04 14:40:37,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 14:40:37,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-04 14:40:37,008 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 903 flow. Second operand 8 states and 163 transitions. [2024-06-04 14:40:37,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 150 transitions, 1283 flow [2024-06-04 14:40:37,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 150 transitions, 1205 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:37,130 INFO L231 Difference]: Finished difference. Result has 114 places, 123 transitions, 936 flow [2024-06-04 14:40:37,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=936, PETRI_PLACES=114, PETRI_TRANSITIONS=123} [2024-06-04 14:40:37,131 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 69 predicate places. [2024-06-04 14:40:37,131 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 123 transitions, 936 flow [2024-06-04 14:40:37,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:37,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:37,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:37,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:40:37,132 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:37,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1772315705, now seen corresponding path program 2 times [2024-06-04 14:40:37,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:37,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842834185] [2024-06-04 14:40:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:38,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842834185] [2024-06-04 14:40:38,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842834185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:38,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:38,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:38,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292903493] [2024-06-04 14:40:38,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:38,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:38,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:38,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:38,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:38,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:38,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 123 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:38,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:38,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:38,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:39,035 INFO L124 PetriNetUnfolderBase]: 2066/3165 cut-off events. [2024-06-04 14:40:39,036 INFO L125 PetriNetUnfolderBase]: For 126080/126083 co-relation queries the response was YES. [2024-06-04 14:40:39,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20566 conditions, 3165 events. 2066/3165 cut-off events. For 126080/126083 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16035 event pairs, 593 based on Foata normal form. 4/3165 useless extension candidates. Maximal degree in co-relation 20514. Up to 2656 conditions per place. [2024-06-04 14:40:39,058 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 64 changer transitions 0/171 dead transitions. [2024-06-04 14:40:39,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 171 transitions, 1762 flow [2024-06-04 14:40:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-04 14:40:39,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-04 14:40:39,060 INFO L175 Difference]: Start difference. First operand has 114 places, 123 transitions, 936 flow. Second operand 9 states and 190 transitions. [2024-06-04 14:40:39,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 171 transitions, 1762 flow [2024-06-04 14:40:39,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 1669 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:39,121 INFO L231 Difference]: Finished difference. Result has 117 places, 132 transitions, 1153 flow [2024-06-04 14:40:39,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1153, PETRI_PLACES=117, PETRI_TRANSITIONS=132} [2024-06-04 14:40:39,122 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2024-06-04 14:40:39,122 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 132 transitions, 1153 flow [2024-06-04 14:40:39,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:39,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:39,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:39,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:40:39,122 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)] === [2024-06-04 14:40:39,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1208405157, now seen corresponding path program 3 times [2024-06-04 14:40:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:39,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870497632] [2024-06-04 14:40:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:39,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:39,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870497632] [2024-06-04 14:40:39,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870497632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:39,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:39,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368623837] [2024-06-04 14:40:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:39,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:40,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:40,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 132 transitions, 1153 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:40,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:40,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:40,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:40,940 INFO L124 PetriNetUnfolderBase]: 2088/3202 cut-off events. [2024-06-04 14:40:40,941 INFO L125 PetriNetUnfolderBase]: For 136074/136077 co-relation queries the response was YES. [2024-06-04 14:40:40,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21443 conditions, 3202 events. 2088/3202 cut-off events. For 136074/136077 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16294 event pairs, 593 based on Foata normal form. 4/3202 useless extension candidates. Maximal degree in co-relation 21390. Up to 2675 conditions per place. [2024-06-04 14:40:40,964 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 101 selfloop transitions, 68 changer transitions 0/174 dead transitions. [2024-06-04 14:40:40,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 174 transitions, 1887 flow [2024-06-04 14:40:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-04 14:40:40,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:40:40,966 INFO L175 Difference]: Start difference. First operand has 117 places, 132 transitions, 1153 flow. Second operand 9 states and 189 transitions. [2024-06-04 14:40:40,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 174 transitions, 1887 flow [2024-06-04 14:40:41,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 174 transitions, 1785 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:41,046 INFO L231 Difference]: Finished difference. Result has 122 places, 135 transitions, 1257 flow [2024-06-04 14:40:41,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1257, PETRI_PLACES=122, PETRI_TRANSITIONS=135} [2024-06-04 14:40:41,046 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 77 predicate places. [2024-06-04 14:40:41,047 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 135 transitions, 1257 flow [2024-06-04 14:40:41,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:41,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:41,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:40:41,047 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:41,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1208398647, now seen corresponding path program 4 times [2024-06-04 14:40:41,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173304834] [2024-06-04 14:40:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:41,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:41,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173304834] [2024-06-04 14:40:41,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173304834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:41,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:41,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:41,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629268435] [2024-06-04 14:40:41,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:41,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:41,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:42,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:42,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 135 transitions, 1257 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:42,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:42,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:42,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:42,871 INFO L124 PetriNetUnfolderBase]: 2078/3188 cut-off events. [2024-06-04 14:40:42,871 INFO L125 PetriNetUnfolderBase]: For 141250/141253 co-relation queries the response was YES. [2024-06-04 14:40:42,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21608 conditions, 3188 events. 2078/3188 cut-off events. For 141250/141253 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16218 event pairs, 593 based on Foata normal form. 4/3188 useless extension candidates. Maximal degree in co-relation 21553. Up to 2667 conditions per place. [2024-06-04 14:40:42,894 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 96 selfloop transitions, 70 changer transitions 0/171 dead transitions. [2024-06-04 14:40:42,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 171 transitions, 1801 flow [2024-06-04 14:40:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-04 14:40:42,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-04 14:40:42,896 INFO L175 Difference]: Start difference. First operand has 122 places, 135 transitions, 1257 flow. Second operand 9 states and 185 transitions. [2024-06-04 14:40:42,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 171 transitions, 1801 flow [2024-06-04 14:40:42,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 171 transitions, 1587 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:42,956 INFO L231 Difference]: Finished difference. Result has 124 places, 135 transitions, 1191 flow [2024-06-04 14:40:42,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1191, PETRI_PLACES=124, PETRI_TRANSITIONS=135} [2024-06-04 14:40:42,957 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 79 predicate places. [2024-06-04 14:40:42,957 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 135 transitions, 1191 flow [2024-06-04 14:40:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:42,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:42,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:40:42,957 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1047402525, now seen corresponding path program 1 times [2024-06-04 14:40:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625629716] [2024-06-04 14:40:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:42,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:43,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625629716] [2024-06-04 14:40:43,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625629716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:43,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094848027] [2024-06-04 14:40:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:43,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:43,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:43,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:43,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:43,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 135 transitions, 1191 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:43,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:43,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:43,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:44,292 INFO L124 PetriNetUnfolderBase]: 1801/2901 cut-off events. [2024-06-04 14:40:44,292 INFO L125 PetriNetUnfolderBase]: For 144892/144900 co-relation queries the response was YES. [2024-06-04 14:40:44,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20221 conditions, 2901 events. 1801/2901 cut-off events. For 144892/144900 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15747 event pairs, 599 based on Foata normal form. 2/2892 useless extension candidates. Maximal degree in co-relation 20165. Up to 2608 conditions per place. [2024-06-04 14:40:44,313 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 113 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-06-04 14:40:44,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 153 transitions, 1513 flow [2024-06-04 14:40:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-04 14:40:44,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:40:44,314 INFO L175 Difference]: Start difference. First operand has 124 places, 135 transitions, 1191 flow. Second operand 6 states and 124 transitions. [2024-06-04 14:40:44,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 153 transitions, 1513 flow [2024-06-04 14:40:44,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 153 transitions, 1365 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:44,387 INFO L231 Difference]: Finished difference. Result has 122 places, 138 transitions, 1114 flow [2024-06-04 14:40:44,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1114, PETRI_PLACES=122, PETRI_TRANSITIONS=138} [2024-06-04 14:40:44,387 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 77 predicate places. [2024-06-04 14:40:44,387 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 138 transitions, 1114 flow [2024-06-04 14:40:44,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:44,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:44,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:44,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:40:44,388 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)] === [2024-06-04 14:40:44,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1345932253, now seen corresponding path program 4 times [2024-06-04 14:40:44,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:44,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247019241] [2024-06-04 14:40:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247019241] [2024-06-04 14:40:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247019241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:45,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:45,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:40:45,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416959329] [2024-06-04 14:40:45,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:45,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:40:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:40:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:40:45,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:40:45,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 138 transitions, 1114 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:45,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:45,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:40:45,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:46,033 INFO L124 PetriNetUnfolderBase]: 1969/3080 cut-off events. [2024-06-04 14:40:46,033 INFO L125 PetriNetUnfolderBase]: For 151937/151940 co-relation queries the response was YES. [2024-06-04 14:40:46,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21192 conditions, 3080 events. 1969/3080 cut-off events. For 151937/151940 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16065 event pairs, 617 based on Foata normal form. 4/3077 useless extension candidates. Maximal degree in co-relation 21135. Up to 2778 conditions per place. [2024-06-04 14:40:46,055 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 120 selfloop transitions, 28 changer transitions 0/164 dead transitions. [2024-06-04 14:40:46,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 164 transitions, 1520 flow [2024-06-04 14:40:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:40:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:40:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:40:46,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:40:46,056 INFO L175 Difference]: Start difference. First operand has 122 places, 138 transitions, 1114 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:40:46,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 164 transitions, 1520 flow [2024-06-04 14:40:46,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 164 transitions, 1473 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 14:40:46,128 INFO L231 Difference]: Finished difference. Result has 126 places, 140 transitions, 1184 flow [2024-06-04 14:40:46,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1184, PETRI_PLACES=126, PETRI_TRANSITIONS=140} [2024-06-04 14:40:46,128 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 81 predicate places. [2024-06-04 14:40:46,128 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 140 transitions, 1184 flow [2024-06-04 14:40:46,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:46,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:46,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:46,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:40:46,129 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)] === [2024-06-04 14:40:46,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1345937213, now seen corresponding path program 5 times [2024-06-04 14:40:46,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:46,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630512089] [2024-06-04 14:40:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:46,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:47,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:47,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630512089] [2024-06-04 14:40:47,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630512089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:47,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:47,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:47,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270026786] [2024-06-04 14:40:47,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:47,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:47,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:47,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:47,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 140 transitions, 1184 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:47,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:47,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:47,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:47,988 INFO L124 PetriNetUnfolderBase]: 2102/3232 cut-off events. [2024-06-04 14:40:47,989 INFO L125 PetriNetUnfolderBase]: For 162714/162717 co-relation queries the response was YES. [2024-06-04 14:40:48,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22445 conditions, 3232 events. 2102/3232 cut-off events. For 162714/162717 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16461 event pairs, 591 based on Foata normal form. 4/3229 useless extension candidates. Maximal degree in co-relation 22387. Up to 2688 conditions per place. [2024-06-04 14:40:48,012 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 98 selfloop transitions, 73 changer transitions 0/176 dead transitions. [2024-06-04 14:40:48,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 176 transitions, 1802 flow [2024-06-04 14:40:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-04 14:40:48,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-04 14:40:48,014 INFO L175 Difference]: Start difference. First operand has 126 places, 140 transitions, 1184 flow. Second operand 9 states and 182 transitions. [2024-06-04 14:40:48,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 176 transitions, 1802 flow [2024-06-04 14:40:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 176 transitions, 1703 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:48,074 INFO L231 Difference]: Finished difference. Result has 129 places, 143 transitions, 1301 flow [2024-06-04 14:40:48,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1301, PETRI_PLACES=129, PETRI_TRANSITIONS=143} [2024-06-04 14:40:48,074 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 84 predicate places. [2024-06-04 14:40:48,074 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 143 transitions, 1301 flow [2024-06-04 14:40:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:48,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:48,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:48,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:40:48,075 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:48,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1346116703, now seen corresponding path program 6 times [2024-06-04 14:40:48,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:48,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484042202] [2024-06-04 14:40:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:48,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:48,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:48,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484042202] [2024-06-04 14:40:48,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484042202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:48,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:48,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:48,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534814051] [2024-06-04 14:40:48,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:49,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:49,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 143 transitions, 1301 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:49,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:49,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:49,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:49,971 INFO L124 PetriNetUnfolderBase]: 2156/3325 cut-off events. [2024-06-04 14:40:49,971 INFO L125 PetriNetUnfolderBase]: For 175393/175396 co-relation queries the response was YES. [2024-06-04 14:40:49,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23571 conditions, 3325 events. 2156/3325 cut-off events. For 175393/175396 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17141 event pairs, 593 based on Foata normal form. 4/3322 useless extension candidates. Maximal degree in co-relation 23512. Up to 2734 conditions per place. [2024-06-04 14:40:49,996 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 77 changer transitions 0/184 dead transitions. [2024-06-04 14:40:49,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 184 transitions, 2155 flow [2024-06-04 14:40:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-04 14:40:49,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-04 14:40:49,998 INFO L175 Difference]: Start difference. First operand has 129 places, 143 transitions, 1301 flow. Second operand 9 states and 185 transitions. [2024-06-04 14:40:49,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 184 transitions, 2155 flow [2024-06-04 14:40:50,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 184 transitions, 1905 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:50,067 INFO L231 Difference]: Finished difference. Result has 131 places, 149 transitions, 1349 flow [2024-06-04 14:40:50,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1349, PETRI_PLACES=131, PETRI_TRANSITIONS=149} [2024-06-04 14:40:50,068 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-06-04 14:40:50,068 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 149 transitions, 1349 flow [2024-06-04 14:40:50,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:50,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:50,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:50,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:40:50,069 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:50,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1346110193, now seen corresponding path program 7 times [2024-06-04 14:40:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:50,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626871563] [2024-06-04 14:40:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:50,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:50,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626871563] [2024-06-04 14:40:50,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626871563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:50,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:50,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:50,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672977475] [2024-06-04 14:40:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:50,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:50,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:50,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:51,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:51,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 1349 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:51,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:51,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:51,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:51,773 INFO L124 PetriNetUnfolderBase]: 2146/3311 cut-off events. [2024-06-04 14:40:51,774 INFO L125 PetriNetUnfolderBase]: For 179756/179759 co-relation queries the response was YES. [2024-06-04 14:40:51,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23379 conditions, 3311 events. 2146/3311 cut-off events. For 179756/179759 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17099 event pairs, 591 based on Foata normal form. 4/3308 useless extension candidates. Maximal degree in co-relation 23319. Up to 2726 conditions per place. [2024-06-04 14:40:51,800 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 76 changer transitions 0/183 dead transitions. [2024-06-04 14:40:51,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 183 transitions, 1929 flow [2024-06-04 14:40:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-04 14:40:51,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-04 14:40:51,803 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 1349 flow. Second operand 9 states and 185 transitions. [2024-06-04 14:40:51,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 183 transitions, 1929 flow [2024-06-04 14:40:51,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 183 transitions, 1729 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:51,904 INFO L231 Difference]: Finished difference. Result has 135 places, 149 transitions, 1309 flow [2024-06-04 14:40:51,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1309, PETRI_PLACES=135, PETRI_TRANSITIONS=149} [2024-06-04 14:40:51,905 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2024-06-04 14:40:51,905 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 149 transitions, 1309 flow [2024-06-04 14:40:51,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:51,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:51,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:51,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:40:51,905 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)] === [2024-06-04 14:40:51,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1582292063, now seen corresponding path program 8 times [2024-06-04 14:40:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030529539] [2024-06-04 14:40:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:52,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:52,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030529539] [2024-06-04 14:40:52,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030529539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:52,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:52,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:52,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809870999] [2024-06-04 14:40:52,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:52,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:52,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:52,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:52,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 149 transitions, 1309 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:52,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:52,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:52,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:53,780 INFO L124 PetriNetUnfolderBase]: 2168/3348 cut-off events. [2024-06-04 14:40:53,780 INFO L125 PetriNetUnfolderBase]: For 188788/188791 co-relation queries the response was YES. [2024-06-04 14:40:53,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23674 conditions, 3348 events. 2168/3348 cut-off events. For 188788/188791 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17321 event pairs, 598 based on Foata normal form. 4/3345 useless extension candidates. Maximal degree in co-relation 23613. Up to 2745 conditions per place. [2024-06-04 14:40:53,806 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 90 selfloop transitions, 89 changer transitions 0/184 dead transitions. [2024-06-04 14:40:53,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 184 transitions, 1952 flow [2024-06-04 14:40:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 14:40:53,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-04 14:40:53,807 INFO L175 Difference]: Start difference. First operand has 135 places, 149 transitions, 1309 flow. Second operand 9 states and 179 transitions. [2024-06-04 14:40:53,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 184 transitions, 1952 flow [2024-06-04 14:40:53,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 184 transitions, 1786 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:53,905 INFO L231 Difference]: Finished difference. Result has 136 places, 152 transitions, 1390 flow [2024-06-04 14:40:53,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1390, PETRI_PLACES=136, PETRI_TRANSITIONS=152} [2024-06-04 14:40:53,906 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2024-06-04 14:40:53,906 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 152 transitions, 1390 flow [2024-06-04 14:40:53,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:53,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:53,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:53,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:40:53,907 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)] === [2024-06-04 14:40:53,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1574011343, now seen corresponding path program 9 times [2024-06-04 14:40:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:53,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703128768] [2024-06-04 14:40:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:53,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:54,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:54,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703128768] [2024-06-04 14:40:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703128768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:54,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:54,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:54,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599795401] [2024-06-04 14:40:54,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:54,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:54,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:54,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:54,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:54,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 152 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:54,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:54,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:54,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:55,820 INFO L124 PetriNetUnfolderBase]: 2190/3390 cut-off events. [2024-06-04 14:40:55,820 INFO L125 PetriNetUnfolderBase]: For 198664/198667 co-relation queries the response was YES. [2024-06-04 14:40:55,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24210 conditions, 3390 events. 2190/3390 cut-off events. For 198664/198667 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17654 event pairs, 596 based on Foata normal form. 4/3387 useless extension candidates. Maximal degree in co-relation 24148. Up to 2764 conditions per place. [2024-06-04 14:40:55,846 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 97 selfloop transitions, 86 changer transitions 0/188 dead transitions. [2024-06-04 14:40:55,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 188 transitions, 2047 flow [2024-06-04 14:40:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-04 14:40:55,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-04 14:40:55,848 INFO L175 Difference]: Start difference. First operand has 136 places, 152 transitions, 1390 flow. Second operand 9 states and 181 transitions. [2024-06-04 14:40:55,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 188 transitions, 2047 flow [2024-06-04 14:40:55,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 188 transitions, 1857 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:55,957 INFO L231 Difference]: Finished difference. Result has 139 places, 155 transitions, 1441 flow [2024-06-04 14:40:55,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1441, PETRI_PLACES=139, PETRI_TRANSITIONS=155} [2024-06-04 14:40:55,958 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-04 14:40:55,958 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 155 transitions, 1441 flow [2024-06-04 14:40:55,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:55,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:55,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:55,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:40:55,959 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)] === [2024-06-04 14:40:55,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1352372813, now seen corresponding path program 10 times [2024-06-04 14:40:55,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:55,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850269124] [2024-06-04 14:40:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:55,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:56,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:56,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850269124] [2024-06-04 14:40:56,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850269124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:56,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:56,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:56,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345541557] [2024-06-04 14:40:56,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:56,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:56,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:56,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:40:56,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 155 transitions, 1441 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:56,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:56,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:40:56,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:57,792 INFO L124 PetriNetUnfolderBase]: 2180/3376 cut-off events. [2024-06-04 14:40:57,792 INFO L125 PetriNetUnfolderBase]: For 204458/204461 co-relation queries the response was YES. [2024-06-04 14:40:57,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24083 conditions, 3376 events. 2180/3376 cut-off events. For 204458/204461 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17508 event pairs, 596 based on Foata normal form. 4/3373 useless extension candidates. Maximal degree in co-relation 24020. Up to 2756 conditions per place. [2024-06-04 14:40:57,820 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 96 selfloop transitions, 85 changer transitions 0/186 dead transitions. [2024-06-04 14:40:57,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 186 transitions, 1879 flow [2024-06-04 14:40:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:40:57,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:40:57,821 INFO L175 Difference]: Start difference. First operand has 139 places, 155 transitions, 1441 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:40:57,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 186 transitions, 1879 flow [2024-06-04 14:40:57,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 186 transitions, 1607 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:57,928 INFO L231 Difference]: Finished difference. Result has 140 places, 155 transitions, 1347 flow [2024-06-04 14:40:57,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1347, PETRI_PLACES=140, PETRI_TRANSITIONS=155} [2024-06-04 14:40:57,928 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 95 predicate places. [2024-06-04 14:40:57,929 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 155 transitions, 1347 flow [2024-06-04 14:40:57,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:57,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:57,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:57,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:40:57,929 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:57,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1059901725, now seen corresponding path program 2 times [2024-06-04 14:40:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:57,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585198902] [2024-06-04 14:40:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:58,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:58,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585198902] [2024-06-04 14:40:58,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585198902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:58,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:58,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:40:58,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369597410] [2024-06-04 14:40:58,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:58,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:40:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:40:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:40:58,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:40:58,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 155 transitions, 1347 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:58,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:58,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:40:58,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:59,147 INFO L124 PetriNetUnfolderBase]: 1853/3002 cut-off events. [2024-06-04 14:40:59,148 INFO L125 PetriNetUnfolderBase]: For 206732/206732 co-relation queries the response was YES. [2024-06-04 14:40:59,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22354 conditions, 3002 events. 1853/3002 cut-off events. For 206732/206732 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16550 event pairs, 602 based on Foata normal form. 1/2973 useless extension candidates. Maximal degree in co-relation 22290. Up to 2685 conditions per place. [2024-06-04 14:40:59,174 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 122 selfloop transitions, 18 changer transitions 0/167 dead transitions. [2024-06-04 14:40:59,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 167 transitions, 1687 flow [2024-06-04 14:40:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:40:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:40:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:40:59,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:40:59,176 INFO L175 Difference]: Start difference. First operand has 140 places, 155 transitions, 1347 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:40:59,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 167 transitions, 1687 flow [2024-06-04 14:40:59,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 167 transitions, 1463 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:59,305 INFO L231 Difference]: Finished difference. Result has 137 places, 158 transitions, 1209 flow [2024-06-04 14:40:59,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1209, PETRI_PLACES=137, PETRI_TRANSITIONS=158} [2024-06-04 14:40:59,305 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 92 predicate places. [2024-06-04 14:40:59,305 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 158 transitions, 1209 flow [2024-06-04 14:40:59,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:59,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:59,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:59,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:40:59,306 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:40:59,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:59,309 INFO L85 PathProgramCache]: Analyzing trace with hash 338063487, now seen corresponding path program 1 times [2024-06-04 14:40:59,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:59,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824464986] [2024-06-04 14:40:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:59,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:00,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:00,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824464986] [2024-06-04 14:41:00,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824464986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:00,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:41:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889741841] [2024-06-04 14:41:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:00,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:41:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:41:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:41:00,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:00,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 158 transitions, 1209 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:00,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:00,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:00,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:00,623 INFO L124 PetriNetUnfolderBase]: 1831/3011 cut-off events. [2024-06-04 14:41:00,623 INFO L125 PetriNetUnfolderBase]: For 182967/182967 co-relation queries the response was YES. [2024-06-04 14:41:00,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20915 conditions, 3011 events. 1831/3011 cut-off events. For 182967/182967 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16661 event pairs, 523 based on Foata normal form. 1/3009 useless extension candidates. Maximal degree in co-relation 20850. Up to 2675 conditions per place. [2024-06-04 14:41:00,646 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 145 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2024-06-04 14:41:00,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 173 transitions, 1589 flow [2024-06-04 14:41:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:41:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:41:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-04 14:41:00,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 14:41:00,647 INFO L175 Difference]: Start difference. First operand has 137 places, 158 transitions, 1209 flow. Second operand 6 states and 121 transitions. [2024-06-04 14:41:00,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 173 transitions, 1589 flow [2024-06-04 14:41:00,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 173 transitions, 1525 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:00,747 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 1217 flow [2024-06-04 14:41:00,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1217, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2024-06-04 14:41:00,748 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-04 14:41:00,748 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 1217 flow [2024-06-04 14:41:00,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:00,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:00,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:00,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:41:00,749 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:00,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:00,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1046951103, now seen corresponding path program 2 times [2024-06-04 14:41:00,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:00,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242714603] [2024-06-04 14:41:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:00,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:01,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:01,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242714603] [2024-06-04 14:41:01,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242714603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:01,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:01,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:41:01,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356486759] [2024-06-04 14:41:01,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:01,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:41:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:01,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:41:01,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:41:01,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:01,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 1217 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:01,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:01,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:01,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:01,925 INFO L124 PetriNetUnfolderBase]: 1828/3003 cut-off events. [2024-06-04 14:41:01,926 INFO L125 PetriNetUnfolderBase]: For 189431/189434 co-relation queries the response was YES. [2024-06-04 14:41:01,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21247 conditions, 3003 events. 1828/3003 cut-off events. For 189431/189434 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16518 event pairs, 527 based on Foata normal form. 3/3002 useless extension candidates. Maximal degree in co-relation 21181. Up to 2665 conditions per place. [2024-06-04 14:41:01,950 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 140 selfloop transitions, 16 changer transitions 0/173 dead transitions. [2024-06-04 14:41:01,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 173 transitions, 1595 flow [2024-06-04 14:41:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:41:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:41:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 14:41:01,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:41:01,951 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 1217 flow. Second operand 6 states and 120 transitions. [2024-06-04 14:41:01,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 173 transitions, 1595 flow [2024-06-04 14:41:02,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 173 transitions, 1545 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:02,055 INFO L231 Difference]: Finished difference. Result has 141 places, 164 transitions, 1255 flow [2024-06-04 14:41:02,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1255, PETRI_PLACES=141, PETRI_TRANSITIONS=164} [2024-06-04 14:41:02,056 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 96 predicate places. [2024-06-04 14:41:02,056 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 164 transitions, 1255 flow [2024-06-04 14:41:02,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:02,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:02,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:02,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:41:02,057 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:02,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1691315277, now seen corresponding path program 1 times [2024-06-04 14:41:02,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:02,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707263491] [2024-06-04 14:41:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707263491] [2024-06-04 14:41:03,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707263491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:03,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:03,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000331552] [2024-06-04 14:41:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:03,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:03,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:03,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 164 transitions, 1255 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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) [2024-06-04 14:41:03,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:03,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:03,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:03,969 INFO L124 PetriNetUnfolderBase]: 1927/3095 cut-off events. [2024-06-04 14:41:03,969 INFO L125 PetriNetUnfolderBase]: For 197083/197083 co-relation queries the response was YES. [2024-06-04 14:41:03,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21968 conditions, 3095 events. 1927/3095 cut-off events. For 197083/197083 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16581 event pairs, 508 based on Foata normal form. 4/3096 useless extension candidates. Maximal degree in co-relation 21901. Up to 2809 conditions per place. [2024-06-04 14:41:03,994 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 172 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2024-06-04 14:41:03,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 197 transitions, 1777 flow [2024-06-04 14:41:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:03,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:41:03,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:41:03,996 INFO L175 Difference]: Start difference. First operand has 141 places, 164 transitions, 1255 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:41:03,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 197 transitions, 1777 flow [2024-06-04 14:41:04,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 197 transitions, 1711 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:04,090 INFO L231 Difference]: Finished difference. Result has 147 places, 169 transitions, 1314 flow [2024-06-04 14:41:04,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1314, PETRI_PLACES=147, PETRI_TRANSITIONS=169} [2024-06-04 14:41:04,090 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 102 predicate places. [2024-06-04 14:41:04,091 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 169 transitions, 1314 flow [2024-06-04 14:41:04,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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) [2024-06-04 14:41:04,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:04,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:04,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:41:04,091 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:04,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 221733423, now seen corresponding path program 1 times [2024-06-04 14:41:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697423681] [2024-06-04 14:41:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:05,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:05,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697423681] [2024-06-04 14:41:05,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697423681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:05,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:05,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:05,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100079890] [2024-06-04 14:41:05,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:05,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:05,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:05,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 169 transitions, 1314 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:05,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:05,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:05,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:06,026 INFO L124 PetriNetUnfolderBase]: 2210/3422 cut-off events. [2024-06-04 14:41:06,027 INFO L125 PetriNetUnfolderBase]: For 248230/248230 co-relation queries the response was YES. [2024-06-04 14:41:06,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25990 conditions, 3422 events. 2210/3422 cut-off events. For 248230/248230 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17723 event pairs, 413 based on Foata normal form. 4/3423 useless extension candidates. Maximal degree in co-relation 25921. Up to 3098 conditions per place. [2024-06-04 14:41:06,056 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 185 selfloop transitions, 25 changer transitions 0/215 dead transitions. [2024-06-04 14:41:06,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 215 transitions, 2106 flow [2024-06-04 14:41:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:41:06,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:41:06,062 INFO L175 Difference]: Start difference. First operand has 147 places, 169 transitions, 1314 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:41:06,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 215 transitions, 2106 flow [2024-06-04 14:41:06,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 215 transitions, 2021 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:06,173 INFO L231 Difference]: Finished difference. Result has 151 places, 173 transitions, 1390 flow [2024-06-04 14:41:06,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1390, PETRI_PLACES=151, PETRI_TRANSITIONS=173} [2024-06-04 14:41:06,174 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 106 predicate places. [2024-06-04 14:41:06,174 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 173 transitions, 1390 flow [2024-06-04 14:41:06,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:06,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:06,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:06,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:41:06,175 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:06,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1613724765, now seen corresponding path program 2 times [2024-06-04 14:41:06,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954002049] [2024-06-04 14:41:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954002049] [2024-06-04 14:41:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954002049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:07,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:07,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:07,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792399969] [2024-06-04 14:41:07,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:07,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:07,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:07,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 173 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:07,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:07,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:07,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:07,959 INFO L124 PetriNetUnfolderBase]: 2227/3449 cut-off events. [2024-06-04 14:41:07,959 INFO L125 PetriNetUnfolderBase]: For 260438/260438 co-relation queries the response was YES. [2024-06-04 14:41:07,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26485 conditions, 3449 events. 2227/3449 cut-off events. For 260438/260438 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17869 event pairs, 582 based on Foata normal form. 4/3450 useless extension candidates. Maximal degree in co-relation 26415. Up to 3235 conditions per place. [2024-06-04 14:41:07,987 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 185 selfloop transitions, 19 changer transitions 0/209 dead transitions. [2024-06-04 14:41:07,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 209 transitions, 1938 flow [2024-06-04 14:41:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:41:07,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:41:07,989 INFO L175 Difference]: Start difference. First operand has 151 places, 173 transitions, 1390 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:41:07,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 209 transitions, 1938 flow [2024-06-04 14:41:08,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 209 transitions, 1837 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:08,138 INFO L231 Difference]: Finished difference. Result has 154 places, 175 transitions, 1392 flow [2024-06-04 14:41:08,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1392, PETRI_PLACES=154, PETRI_TRANSITIONS=175} [2024-06-04 14:41:08,138 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 109 predicate places. [2024-06-04 14:41:08,138 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 175 transitions, 1392 flow [2024-06-04 14:41:08,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:08,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:08,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:08,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:41:08,141 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:08,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash 998172199, now seen corresponding path program 3 times [2024-06-04 14:41:08,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:08,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152387254] [2024-06-04 14:41:08,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:08,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:09,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:09,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152387254] [2024-06-04 14:41:09,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152387254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:09,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:09,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:09,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424973540] [2024-06-04 14:41:09,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:09,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:09,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:09,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 175 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:09,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:09,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:09,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:09,956 INFO L124 PetriNetUnfolderBase]: 2219/3437 cut-off events. [2024-06-04 14:41:09,956 INFO L125 PetriNetUnfolderBase]: For 267335/267335 co-relation queries the response was YES. [2024-06-04 14:41:09,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26338 conditions, 3437 events. 2219/3437 cut-off events. For 267335/267335 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17808 event pairs, 575 based on Foata normal form. 4/3438 useless extension candidates. Maximal degree in co-relation 26266. Up to 3182 conditions per place. [2024-06-04 14:41:09,986 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 183 selfloop transitions, 22 changer transitions 0/210 dead transitions. [2024-06-04 14:41:09,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 210 transitions, 1890 flow [2024-06-04 14:41:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:41:09,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:41:09,988 INFO L175 Difference]: Start difference. First operand has 154 places, 175 transitions, 1392 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:41:09,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 210 transitions, 1890 flow [2024-06-04 14:41:10,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 210 transitions, 1799 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:10,162 INFO L231 Difference]: Finished difference. Result has 156 places, 175 transitions, 1352 flow [2024-06-04 14:41:10,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=156, PETRI_TRANSITIONS=175} [2024-06-04 14:41:10,162 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2024-06-04 14:41:10,162 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 175 transitions, 1352 flow [2024-06-04 14:41:10,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:10,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:10,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:10,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:41:10,163 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:10,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash 364070853, now seen corresponding path program 4 times [2024-06-04 14:41:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:10,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496694755] [2024-06-04 14:41:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:10,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:11,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:11,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496694755] [2024-06-04 14:41:11,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496694755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:11,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:11,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544307868] [2024-06-04 14:41:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:11,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:11,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 175 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:11,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:11,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:11,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:11,926 INFO L124 PetriNetUnfolderBase]: 2236/3465 cut-off events. [2024-06-04 14:41:11,927 INFO L125 PetriNetUnfolderBase]: For 278232/278235 co-relation queries the response was YES. [2024-06-04 14:41:11,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26665 conditions, 3465 events. 2236/3465 cut-off events. For 278232/278235 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 18053 event pairs, 593 based on Foata normal form. 4/3465 useless extension candidates. Maximal degree in co-relation 26592. Up to 3124 conditions per place. [2024-06-04 14:41:11,957 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 152 selfloop transitions, 51 changer transitions 0/208 dead transitions. [2024-06-04 14:41:11,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 208 transitions, 1890 flow [2024-06-04 14:41:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 14:41:11,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-04 14:41:11,961 INFO L175 Difference]: Start difference. First operand has 156 places, 175 transitions, 1352 flow. Second operand 9 states and 177 transitions. [2024-06-04 14:41:11,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 208 transitions, 1890 flow [2024-06-04 14:41:12,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 208 transitions, 1831 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:12,119 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 1460 flow [2024-06-04 14:41:12,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1460, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2024-06-04 14:41:12,119 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 112 predicate places. [2024-06-04 14:41:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 1460 flow [2024-06-04 14:41:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:12,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:12,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:41:12,120 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:12,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash 363922983, now seen corresponding path program 5 times [2024-06-04 14:41:12,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:12,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483550695] [2024-06-04 14:41:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:13,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:13,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483550695] [2024-06-04 14:41:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483550695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:13,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:13,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803754967] [2024-06-04 14:41:13,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:13,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:13,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 177 transitions, 1460 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:13,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:13,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:13,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:13,966 INFO L124 PetriNetUnfolderBase]: 2278/3531 cut-off events. [2024-06-04 14:41:13,966 INFO L125 PetriNetUnfolderBase]: For 296357/296360 co-relation queries the response was YES. [2024-06-04 14:41:13,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27797 conditions, 3531 events. 2278/3531 cut-off events. For 296357/296360 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18473 event pairs, 590 based on Foata normal form. 4/3531 useless extension candidates. Maximal degree in co-relation 27723. Up to 3125 conditions per place. [2024-06-04 14:41:13,998 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 154 selfloop transitions, 56 changer transitions 0/215 dead transitions. [2024-06-04 14:41:13,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 215 transitions, 2264 flow [2024-06-04 14:41:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 14:41:14,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:41:14,000 INFO L175 Difference]: Start difference. First operand has 157 places, 177 transitions, 1460 flow. Second operand 9 states and 180 transitions. [2024-06-04 14:41:14,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 215 transitions, 2264 flow [2024-06-04 14:41:14,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 215 transitions, 2115 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:14,172 INFO L231 Difference]: Finished difference. Result has 159 places, 181 transitions, 1550 flow [2024-06-04 14:41:14,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1550, PETRI_PLACES=159, PETRI_TRANSITIONS=181} [2024-06-04 14:41:14,173 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2024-06-04 14:41:14,173 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 181 transitions, 1550 flow [2024-06-04 14:41:14,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:14,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:14,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:14,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:41:14,173 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:14,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1072605581, now seen corresponding path program 6 times [2024-06-04 14:41:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:14,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65394812] [2024-06-04 14:41:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:15,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65394812] [2024-06-04 14:41:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65394812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:15,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182266304] [2024-06-04 14:41:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:15,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:15,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 181 transitions, 1550 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:15,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:15,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:15,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:16,015 INFO L124 PetriNetUnfolderBase]: 2270/3519 cut-off events. [2024-06-04 14:41:16,015 INFO L125 PetriNetUnfolderBase]: For 303809/303812 co-relation queries the response was YES. [2024-06-04 14:41:16,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27827 conditions, 3519 events. 2270/3519 cut-off events. For 303809/303812 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18364 event pairs, 593 based on Foata normal form. 4/3519 useless extension candidates. Maximal degree in co-relation 27752. Up to 3178 conditions per place. [2024-06-04 14:41:16,047 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 155 selfloop transitions, 52 changer transitions 0/212 dead transitions. [2024-06-04 14:41:16,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 212 transitions, 2042 flow [2024-06-04 14:41:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:41:16,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:41:16,052 INFO L175 Difference]: Start difference. First operand has 159 places, 181 transitions, 1550 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:41:16,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 212 transitions, 2042 flow [2024-06-04 14:41:16,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 212 transitions, 1884 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:16,271 INFO L231 Difference]: Finished difference. Result has 163 places, 181 transitions, 1503 flow [2024-06-04 14:41:16,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1503, PETRI_PLACES=163, PETRI_TRANSITIONS=181} [2024-06-04 14:41:16,271 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2024-06-04 14:41:16,271 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 181 transitions, 1503 flow [2024-06-04 14:41:16,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:16,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:16,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:16,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:41:16,272 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:16,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1490764337, now seen corresponding path program 1 times [2024-06-04 14:41:16,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817607272] [2024-06-04 14:41:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:17,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:17,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817607272] [2024-06-04 14:41:17,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817607272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:17,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:17,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:17,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774208190] [2024-06-04 14:41:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:17,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:17,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:17,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:17,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 181 transitions, 1503 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:17,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:17,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:17,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:17,944 INFO L124 PetriNetUnfolderBase]: 1938/3157 cut-off events. [2024-06-04 14:41:17,944 INFO L125 PetriNetUnfolderBase]: For 308892/308898 co-relation queries the response was YES. [2024-06-04 14:41:17,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26048 conditions, 3157 events. 1938/3157 cut-off events. For 308892/308898 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17527 event pairs, 563 based on Foata normal form. 4/3139 useless extension candidates. Maximal degree in co-relation 25971. Up to 2782 conditions per place. [2024-06-04 14:41:17,971 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 151 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-04 14:41:17,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 200 transitions, 1915 flow [2024-06-04 14:41:17,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:41:17,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:41:17,973 INFO L175 Difference]: Start difference. First operand has 163 places, 181 transitions, 1503 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:41:17,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 200 transitions, 1915 flow [2024-06-04 14:41:18,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 200 transitions, 1799 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:18,124 INFO L231 Difference]: Finished difference. Result has 162 places, 184 transitions, 1469 flow [2024-06-04 14:41:18,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1469, PETRI_PLACES=162, PETRI_TRANSITIONS=184} [2024-06-04 14:41:18,124 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 117 predicate places. [2024-06-04 14:41:18,125 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 184 transitions, 1469 flow [2024-06-04 14:41:18,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:18,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:18,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:18,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:41:18,125 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)] === [2024-06-04 14:41:18,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1225623611, now seen corresponding path program 7 times [2024-06-04 14:41:18,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:18,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189990763] [2024-06-04 14:41:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:19,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:19,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189990763] [2024-06-04 14:41:19,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189990763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:19,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:19,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353369176] [2024-06-04 14:41:19,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:19,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:19,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:19,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:19,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:19,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 184 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:19,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:19,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:19,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:19,963 INFO L124 PetriNetUnfolderBase]: 2297/3558 cut-off events. [2024-06-04 14:41:19,963 INFO L125 PetriNetUnfolderBase]: For 324737/324740 co-relation queries the response was YES. [2024-06-04 14:41:19,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28630 conditions, 3558 events. 2297/3558 cut-off events. For 324737/324740 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18549 event pairs, 605 based on Foata normal form. 4/3555 useless extension candidates. Maximal degree in co-relation 28552. Up to 3219 conditions per place. [2024-06-04 14:41:19,991 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 157 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-06-04 14:41:19,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 214 transitions, 2019 flow [2024-06-04 14:41:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 14:41:19,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-04 14:41:19,993 INFO L175 Difference]: Start difference. First operand has 162 places, 184 transitions, 1469 flow. Second operand 9 states and 173 transitions. [2024-06-04 14:41:19,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 214 transitions, 2019 flow [2024-06-04 14:41:20,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 214 transitions, 1959 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:20,202 INFO L231 Difference]: Finished difference. Result has 166 places, 186 transitions, 1586 flow [2024-06-04 14:41:20,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1586, PETRI_PLACES=166, PETRI_TRANSITIONS=186} [2024-06-04 14:41:20,203 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 121 predicate places. [2024-06-04 14:41:20,203 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 186 transitions, 1586 flow [2024-06-04 14:41:20,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:20,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:20,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:20,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:41:20,203 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)] === [2024-06-04 14:41:20,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1732481727, now seen corresponding path program 8 times [2024-06-04 14:41:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613822088] [2024-06-04 14:41:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:21,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613822088] [2024-06-04 14:41:21,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613822088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:21,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:21,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:21,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637273646] [2024-06-04 14:41:21,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:21,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:21,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:21,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 186 transitions, 1586 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:21,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:21,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:21,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:22,130 INFO L124 PetriNetUnfolderBase]: 2314/3585 cut-off events. [2024-06-04 14:41:22,131 INFO L125 PetriNetUnfolderBase]: For 338719/338722 co-relation queries the response was YES. [2024-06-04 14:41:22,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29353 conditions, 3585 events. 2314/3585 cut-off events. For 338719/338722 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18739 event pairs, 600 based on Foata normal form. 4/3582 useless extension candidates. Maximal degree in co-relation 29274. Up to 3176 conditions per place. [2024-06-04 14:41:22,161 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 159 selfloop transitions, 57 changer transitions 0/221 dead transitions. [2024-06-04 14:41:22,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 221 transitions, 2424 flow [2024-06-04 14:41:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 14:41:22,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 14:41:22,163 INFO L175 Difference]: Start difference. First operand has 166 places, 186 transitions, 1586 flow. Second operand 9 states and 176 transitions. [2024-06-04 14:41:22,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 221 transitions, 2424 flow [2024-06-04 14:41:22,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 221 transitions, 2265 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:22,400 INFO L231 Difference]: Finished difference. Result has 168 places, 190 transitions, 1684 flow [2024-06-04 14:41:22,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1684, PETRI_PLACES=168, PETRI_TRANSITIONS=190} [2024-06-04 14:41:22,401 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 123 predicate places. [2024-06-04 14:41:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 190 transitions, 1684 flow [2024-06-04 14:41:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:22,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:22,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:41:22,402 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)] === [2024-06-04 14:41:22,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1220261231, now seen corresponding path program 9 times [2024-06-04 14:41:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:22,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278918052] [2024-06-04 14:41:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:22,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:23,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278918052] [2024-06-04 14:41:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278918052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:23,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:23,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:23,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198885554] [2024-06-04 14:41:23,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:23,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:23,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:23,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 190 transitions, 1684 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:23,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:23,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:23,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:24,418 INFO L124 PetriNetUnfolderBase]: 2331/3612 cut-off events. [2024-06-04 14:41:24,419 INFO L125 PetriNetUnfolderBase]: For 352670/352673 co-relation queries the response was YES. [2024-06-04 14:41:24,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29859 conditions, 3612 events. 2331/3612 cut-off events. For 352670/352673 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18882 event pairs, 605 based on Foata normal form. 4/3609 useless extension candidates. Maximal degree in co-relation 29779. Up to 3273 conditions per place. [2024-06-04 14:41:24,453 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 164 selfloop transitions, 51 changer transitions 0/220 dead transitions. [2024-06-04 14:41:24,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 220 transitions, 2254 flow [2024-06-04 14:41:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:41:24,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:41:24,454 INFO L175 Difference]: Start difference. First operand has 168 places, 190 transitions, 1684 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:41:24,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 220 transitions, 2254 flow [2024-06-04 14:41:24,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 220 transitions, 2082 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:24,671 INFO L231 Difference]: Finished difference. Result has 172 places, 192 transitions, 1695 flow [2024-06-04 14:41:24,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1695, PETRI_PLACES=172, PETRI_TRANSITIONS=192} [2024-06-04 14:41:24,672 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 127 predicate places. [2024-06-04 14:41:24,672 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 192 transitions, 1695 flow [2024-06-04 14:41:24,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:24,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:24,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:41:24,672 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)] === [2024-06-04 14:41:24,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1931931387, now seen corresponding path program 10 times [2024-06-04 14:41:24,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:24,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423905794] [2024-06-04 14:41:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:25,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:25,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423905794] [2024-06-04 14:41:25,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423905794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:25,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:25,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:41:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270972867] [2024-06-04 14:41:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:25,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:41:25,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:41:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:41:25,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:25,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 192 transitions, 1695 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:25,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:25,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:26,621 INFO L124 PetriNetUnfolderBase]: 2323/3600 cut-off events. [2024-06-04 14:41:26,621 INFO L125 PetriNetUnfolderBase]: For 356892/356895 co-relation queries the response was YES. [2024-06-04 14:41:26,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 3600 events. 2323/3600 cut-off events. For 356892/356895 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18850 event pairs, 603 based on Foata normal form. 4/3597 useless extension candidates. Maximal degree in co-relation 29555. Up to 3261 conditions per place. [2024-06-04 14:41:26,653 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 161 selfloop transitions, 54 changer transitions 0/220 dead transitions. [2024-06-04 14:41:26,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 220 transitions, 2195 flow [2024-06-04 14:41:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:41:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:41:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:41:26,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:41:26,654 INFO L175 Difference]: Start difference. First operand has 172 places, 192 transitions, 1695 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:41:26,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 220 transitions, 2195 flow [2024-06-04 14:41:26,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 220 transitions, 2030 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:26,936 INFO L231 Difference]: Finished difference. Result has 174 places, 192 transitions, 1645 flow [2024-06-04 14:41:26,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1645, PETRI_PLACES=174, PETRI_TRANSITIONS=192} [2024-06-04 14:41:26,937 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 129 predicate places. [2024-06-04 14:41:26,937 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 192 transitions, 1645 flow [2024-06-04 14:41:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:26,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:26,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:41:26,937 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:26,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1904071217, now seen corresponding path program 2 times [2024-06-04 14:41:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787633610] [2024-06-04 14:41:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:27,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787633610] [2024-06-04 14:41:27,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787633610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:27,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:27,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924099983] [2024-06-04 14:41:27,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:27,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:28,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:28,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 192 transitions, 1645 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:28,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:28,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:28,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:28,512 INFO L124 PetriNetUnfolderBase]: 1976/3215 cut-off events. [2024-06-04 14:41:28,512 INFO L125 PetriNetUnfolderBase]: For 360918/360938 co-relation queries the response was YES. [2024-06-04 14:41:28,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27581 conditions, 3215 events. 1976/3215 cut-off events. For 360918/360938 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17958 event pairs, 573 based on Foata normal form. 7/3193 useless extension candidates. Maximal degree in co-relation 27498. Up to 2829 conditions per place. [2024-06-04 14:41:28,542 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 147 selfloop transitions, 21 changer transitions 0/205 dead transitions. [2024-06-04 14:41:28,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 205 transitions, 2049 flow [2024-06-04 14:41:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:41:28,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:41:28,544 INFO L175 Difference]: Start difference. First operand has 174 places, 192 transitions, 1645 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:41:28,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 205 transitions, 2049 flow [2024-06-04 14:41:28,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 205 transitions, 1922 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:28,749 INFO L231 Difference]: Finished difference. Result has 173 places, 195 transitions, 1616 flow [2024-06-04 14:41:28,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1616, PETRI_PLACES=173, PETRI_TRANSITIONS=195} [2024-06-04 14:41:28,750 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 128 predicate places. [2024-06-04 14:41:28,750 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 195 transitions, 1616 flow [2024-06-04 14:41:28,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:28,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:28,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:28,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:41:28,751 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:28,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1904546447, now seen corresponding path program 3 times [2024-06-04 14:41:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338596608] [2024-06-04 14:41:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:29,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338596608] [2024-06-04 14:41:29,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338596608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:29,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:29,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188859259] [2024-06-04 14:41:29,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:29,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:29,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:29,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:29,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:29,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 195 transitions, 1616 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:29,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:29,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:29,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:30,539 INFO L124 PetriNetUnfolderBase]: 1973/3211 cut-off events. [2024-06-04 14:41:30,539 INFO L125 PetriNetUnfolderBase]: For 370732/370742 co-relation queries the response was YES. [2024-06-04 14:41:30,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27837 conditions, 3211 events. 1973/3211 cut-off events. For 370732/370742 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17913 event pairs, 573 based on Foata normal form. 11/3194 useless extension candidates. Maximal degree in co-relation 27753. Up to 2813 conditions per place. [2024-06-04 14:41:30,568 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 145 selfloop transitions, 29 changer transitions 0/211 dead transitions. [2024-06-04 14:41:30,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 211 transitions, 2052 flow [2024-06-04 14:41:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:41:30,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:41:30,569 INFO L175 Difference]: Start difference. First operand has 173 places, 195 transitions, 1616 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:41:30,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 211 transitions, 2052 flow [2024-06-04 14:41:30,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 211 transitions, 1976 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:30,824 INFO L231 Difference]: Finished difference. Result has 176 places, 201 transitions, 1690 flow [2024-06-04 14:41:30,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1690, PETRI_PLACES=176, PETRI_TRANSITIONS=201} [2024-06-04 14:41:30,824 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2024-06-04 14:41:30,824 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 201 transitions, 1690 flow [2024-06-04 14:41:30,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:30,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:30,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:41:30,825 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:41:30,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1668073611, now seen corresponding path program 1 times [2024-06-04 14:41:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658530835] [2024-06-04 14:41:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:31,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:31,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658530835] [2024-06-04 14:41:31,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658530835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:31,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:31,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:31,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334169824] [2024-06-04 14:41:31,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:31,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:31,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:31,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:31,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 201 transitions, 1690 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:31,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:31,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:31,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:32,300 INFO L124 PetriNetUnfolderBase]: 2191/3475 cut-off events. [2024-06-04 14:41:32,301 INFO L125 PetriNetUnfolderBase]: For 386856/386856 co-relation queries the response was YES. [2024-06-04 14:41:32,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29792 conditions, 3475 events. 2191/3475 cut-off events. For 386856/386856 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18715 event pairs, 539 based on Foata normal form. 1/3473 useless extension candidates. Maximal degree in co-relation 29706. Up to 3196 conditions per place. [2024-06-04 14:41:32,331 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 196 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-06-04 14:41:32,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 220 transitions, 2202 flow [2024-06-04 14:41:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 14:41:32,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-04 14:41:32,332 INFO L175 Difference]: Start difference. First operand has 176 places, 201 transitions, 1690 flow. Second operand 7 states and 134 transitions. [2024-06-04 14:41:32,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 220 transitions, 2202 flow [2024-06-04 14:41:32,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 220 transitions, 2137 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-04 14:41:32,611 INFO L231 Difference]: Finished difference. Result has 180 places, 204 transitions, 1717 flow [2024-06-04 14:41:32,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1717, PETRI_PLACES=180, PETRI_TRANSITIONS=204} [2024-06-04 14:41:32,612 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 135 predicate places. [2024-06-04 14:41:32,612 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 204 transitions, 1717 flow [2024-06-04 14:41:32,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:32,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:32,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:32,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:41:32,613 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)] === [2024-06-04 14:41:32,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1241295777, now seen corresponding path program 1 times [2024-06-04 14:41:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679430669] [2024-06-04 14:41:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:32,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:33,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:33,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679430669] [2024-06-04 14:41:33,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679430669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:33,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:33,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:33,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903327439] [2024-06-04 14:41:33,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:33,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:33,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:33,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:33,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 204 transitions, 1717 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:33,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:33,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:33,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:34,383 INFO L124 PetriNetUnfolderBase]: 2073/3361 cut-off events. [2024-06-04 14:41:34,383 INFO L125 PetriNetUnfolderBase]: For 398569/398569 co-relation queries the response was YES. [2024-06-04 14:41:34,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29430 conditions, 3361 events. 2073/3361 cut-off events. For 398569/398569 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18591 event pairs, 533 based on Foata normal form. 2/3360 useless extension candidates. Maximal degree in co-relation 29342. Up to 2924 conditions per place. [2024-06-04 14:41:34,419 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 174 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-06-04 14:41:34,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 220 transitions, 2169 flow [2024-06-04 14:41:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:41:34,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:41:34,421 INFO L175 Difference]: Start difference. First operand has 180 places, 204 transitions, 1717 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:41:34,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 220 transitions, 2169 flow [2024-06-04 14:41:34,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 2099 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:34,674 INFO L231 Difference]: Finished difference. Result has 182 places, 207 transitions, 1731 flow [2024-06-04 14:41:34,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1731, PETRI_PLACES=182, PETRI_TRANSITIONS=207} [2024-06-04 14:41:34,674 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 137 predicate places. [2024-06-04 14:41:34,674 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 207 transitions, 1731 flow [2024-06-04 14:41:34,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:34,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:34,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:34,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:41:34,675 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)] === [2024-06-04 14:41:34,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1668080121, now seen corresponding path program 2 times [2024-06-04 14:41:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:34,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125327009] [2024-06-04 14:41:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:34,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:35,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125327009] [2024-06-04 14:41:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125327009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:35,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048326769] [2024-06-04 14:41:35,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:35,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:35,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:35,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 207 transitions, 1731 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:35,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:35,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:35,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:36,214 INFO L124 PetriNetUnfolderBase]: 2201/3491 cut-off events. [2024-06-04 14:41:36,214 INFO L125 PetriNetUnfolderBase]: For 410591/410591 co-relation queries the response was YES. [2024-06-04 14:41:36,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30840 conditions, 3491 events. 2201/3491 cut-off events. For 410591/410591 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18770 event pairs, 538 based on Foata normal form. 1/3489 useless extension candidates. Maximal degree in co-relation 30751. Up to 3204 conditions per place. [2024-06-04 14:41:36,250 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 194 selfloop transitions, 19 changer transitions 0/223 dead transitions. [2024-06-04 14:41:36,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 223 transitions, 2249 flow [2024-06-04 14:41:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 14:41:36,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:41:36,251 INFO L175 Difference]: Start difference. First operand has 182 places, 207 transitions, 1731 flow. Second operand 7 states and 133 transitions. [2024-06-04 14:41:36,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 223 transitions, 2249 flow [2024-06-04 14:41:36,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 223 transitions, 2187 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:36,523 INFO L231 Difference]: Finished difference. Result has 184 places, 210 transitions, 1779 flow [2024-06-04 14:41:36,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1779, PETRI_PLACES=184, PETRI_TRANSITIONS=210} [2024-06-04 14:41:36,524 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 139 predicate places. [2024-06-04 14:41:36,524 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 210 transitions, 1779 flow [2024-06-04 14:41:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:36,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:36,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:36,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:41:36,525 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)] === [2024-06-04 14:41:36,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1904264099, now seen corresponding path program 2 times [2024-06-04 14:41:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:36,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718999893] [2024-06-04 14:41:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:36,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:37,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718999893] [2024-06-04 14:41:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718999893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:37,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:37,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:37,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359766114] [2024-06-04 14:41:37,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:37,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:37,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:37,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:37,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 210 transitions, 1779 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:37,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:37,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:37,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:38,162 INFO L124 PetriNetUnfolderBase]: 2088/3385 cut-off events. [2024-06-04 14:41:38,162 INFO L125 PetriNetUnfolderBase]: For 425077/425080 co-relation queries the response was YES. [2024-06-04 14:41:38,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30504 conditions, 3385 events. 2088/3385 cut-off events. For 425077/425080 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18769 event pairs, 535 based on Foata normal form. 5/3386 useless extension candidates. Maximal degree in co-relation 30414. Up to 2909 conditions per place. [2024-06-04 14:41:38,197 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 168 selfloop transitions, 28 changer transitions 0/229 dead transitions. [2024-06-04 14:41:38,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 229 transitions, 2431 flow [2024-06-04 14:41:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 14:41:38,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:41:38,198 INFO L175 Difference]: Start difference. First operand has 184 places, 210 transitions, 1779 flow. Second operand 7 states and 140 transitions. [2024-06-04 14:41:38,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 229 transitions, 2431 flow [2024-06-04 14:41:38,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 229 transitions, 2343 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:38,465 INFO L231 Difference]: Finished difference. Result has 186 places, 216 transitions, 1864 flow [2024-06-04 14:41:38,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1864, PETRI_PLACES=186, PETRI_TRANSITIONS=216} [2024-06-04 14:41:38,465 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 141 predicate places. [2024-06-04 14:41:38,466 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 216 transitions, 1864 flow [2024-06-04 14:41:38,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:38,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:38,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:38,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:41:38,466 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)] === [2024-06-04 14:41:38,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1904255729, now seen corresponding path program 3 times [2024-06-04 14:41:38,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:38,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167305647] [2024-06-04 14:41:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167305647] [2024-06-04 14:41:39,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167305647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:39,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:39,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901586892] [2024-06-04 14:41:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:39,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:39,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:39,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:41:39,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 216 transitions, 1864 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:39,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:39,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:41:39,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:40,255 INFO L124 PetriNetUnfolderBase]: 2087/3384 cut-off events. [2024-06-04 14:41:40,255 INFO L125 PetriNetUnfolderBase]: For 435475/435478 co-relation queries the response was YES. [2024-06-04 14:41:40,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30843 conditions, 3384 events. 2087/3384 cut-off events. For 435475/435478 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18806 event pairs, 536 based on Foata normal form. 5/3385 useless extension candidates. Maximal degree in co-relation 30752. Up to 2934 conditions per place. [2024-06-04 14:41:40,289 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 178 selfloop transitions, 19 changer transitions 0/230 dead transitions. [2024-06-04 14:41:40,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 230 transitions, 2344 flow [2024-06-04 14:41:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 14:41:40,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-04 14:41:40,290 INFO L175 Difference]: Start difference. First operand has 186 places, 216 transitions, 1864 flow. Second operand 7 states and 137 transitions. [2024-06-04 14:41:40,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 230 transitions, 2344 flow [2024-06-04 14:41:40,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 230 transitions, 2272 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-04 14:41:40,552 INFO L231 Difference]: Finished difference. Result has 190 places, 219 transitions, 1900 flow [2024-06-04 14:41:40,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1900, PETRI_PLACES=190, PETRI_TRANSITIONS=219} [2024-06-04 14:41:40,553 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 145 predicate places. [2024-06-04 14:41:40,553 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 219 transitions, 1900 flow [2024-06-04 14:41:40,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2024-06-04 14:41:40,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:40,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:40,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:41:40,554 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)] === [2024-06-04 14:41:40,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1904255481, now seen corresponding path program 3 times [2024-06-04 14:41:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285804064] [2024-06-04 14:41:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:40,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:41,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:41,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285804064] [2024-06-04 14:41:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285804064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:41,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:41,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:41:41,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036738677] [2024-06-04 14:41:41,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:41,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:41:41,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:41,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:41:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:41:41,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:41:41,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 219 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:41,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:41,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:41:41,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:42,136 INFO L124 PetriNetUnfolderBase]: 2207/3503 cut-off events. [2024-06-04 14:41:42,136 INFO L125 PetriNetUnfolderBase]: For 444023/444026 co-relation queries the response was YES. [2024-06-04 14:41:42,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31850 conditions, 3503 events. 2207/3503 cut-off events. For 444023/444026 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18966 event pairs, 545 based on Foata normal form. 1/3500 useless extension candidates. Maximal degree in co-relation 31757. Up to 3205 conditions per place. [2024-06-04 14:41:42,170 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 196 selfloop transitions, 26 changer transitions 0/232 dead transitions. [2024-06-04 14:41:42,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 232 transitions, 2436 flow [2024-06-04 14:41:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:41:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:41:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-04 14:41:42,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 14:41:42,172 INFO L175 Difference]: Start difference. First operand has 190 places, 219 transitions, 1900 flow. Second operand 7 states and 132 transitions. [2024-06-04 14:41:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 232 transitions, 2436 flow [2024-06-04 14:41:42,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 232 transitions, 2366 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:42,483 INFO L231 Difference]: Finished difference. Result has 192 places, 222 transitions, 1962 flow [2024-06-04 14:41:42,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1962, PETRI_PLACES=192, PETRI_TRANSITIONS=222} [2024-06-04 14:41:42,483 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 147 predicate places. [2024-06-04 14:41:42,483 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 222 transitions, 1962 flow [2024-06-04 14:41:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:42,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:42,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:42,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:41:42,484 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)] === [2024-06-04 14:41:42,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1211940462, now seen corresponding path program 1 times [2024-06-04 14:41:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000311516] [2024-06-04 14:41:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:43,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:43,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000311516] [2024-06-04 14:41:43,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000311516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:43,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:43,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:43,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024449330] [2024-06-04 14:41:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:43,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:43,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 222 transitions, 1962 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:43,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:43,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:43,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:44,638 INFO L124 PetriNetUnfolderBase]: 2527/3948 cut-off events. [2024-06-04 14:41:44,638 INFO L125 PetriNetUnfolderBase]: For 531063/531063 co-relation queries the response was YES. [2024-06-04 14:41:44,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36304 conditions, 3948 events. 2527/3948 cut-off events. For 531063/531063 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21366 event pairs, 481 based on Foata normal form. 16/3961 useless extension candidates. Maximal degree in co-relation 36210. Up to 3303 conditions per place. [2024-06-04 14:41:44,677 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 245 selfloop transitions, 29 changer transitions 0/279 dead transitions. [2024-06-04 14:41:44,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 279 transitions, 3014 flow [2024-06-04 14:41:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-04 14:41:44,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2024-06-04 14:41:44,678 INFO L175 Difference]: Start difference. First operand has 192 places, 222 transitions, 1962 flow. Second operand 11 states and 219 transitions. [2024-06-04 14:41:44,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 279 transitions, 3014 flow [2024-06-04 14:41:44,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 279 transitions, 2904 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:44,955 INFO L231 Difference]: Finished difference. Result has 198 places, 224 transitions, 2018 flow [2024-06-04 14:41:44,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2018, PETRI_PLACES=198, PETRI_TRANSITIONS=224} [2024-06-04 14:41:44,956 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 153 predicate places. [2024-06-04 14:41:44,956 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 224 transitions, 2018 flow [2024-06-04 14:41:44,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:44,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:44,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:44,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:41:44,956 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)] === [2024-06-04 14:41:44,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash -724368452, now seen corresponding path program 2 times [2024-06-04 14:41:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273079842] [2024-06-04 14:41:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:44,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:46,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:46,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273079842] [2024-06-04 14:41:46,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273079842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:46,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:46,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:46,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241931838] [2024-06-04 14:41:46,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:46,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:46,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:46,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:46,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:46,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:46,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 224 transitions, 2018 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:46,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:46,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:46,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:47,199 INFO L124 PetriNetUnfolderBase]: 2671/4194 cut-off events. [2024-06-04 14:41:47,199 INFO L125 PetriNetUnfolderBase]: For 579705/579705 co-relation queries the response was YES. [2024-06-04 14:41:47,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39212 conditions, 4194 events. 2671/4194 cut-off events. For 579705/579705 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23098 event pairs, 675 based on Foata normal form. 16/4207 useless extension candidates. Maximal degree in co-relation 39117. Up to 3680 conditions per place. [2024-06-04 14:41:47,240 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 247 selfloop transitions, 23 changer transitions 0/275 dead transitions. [2024-06-04 14:41:47,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 275 transitions, 3056 flow [2024-06-04 14:41:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:41:47,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:41:47,242 INFO L175 Difference]: Start difference. First operand has 198 places, 224 transitions, 2018 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:41:47,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 275 transitions, 3056 flow [2024-06-04 14:41:47,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 275 transitions, 2964 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:47,666 INFO L231 Difference]: Finished difference. Result has 201 places, 226 transitions, 2084 flow [2024-06-04 14:41:47,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=201, PETRI_TRANSITIONS=226} [2024-06-04 14:41:47,667 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 156 predicate places. [2024-06-04 14:41:47,667 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 226 transitions, 2084 flow [2024-06-04 14:41:47,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:47,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:47,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:47,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:41:47,667 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)] === [2024-06-04 14:41:47,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1093675152, now seen corresponding path program 3 times [2024-06-04 14:41:47,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:47,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025092] [2024-06-04 14:41:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:48,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:48,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025092] [2024-06-04 14:41:48,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:48,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:48,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:48,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974212170] [2024-06-04 14:41:48,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:48,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:48,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:48,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:48,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:48,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:48,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 226 transitions, 2084 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:48,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:48,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:48,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:49,796 INFO L124 PetriNetUnfolderBase]: 2635/4138 cut-off events. [2024-06-04 14:41:49,796 INFO L125 PetriNetUnfolderBase]: For 565343/565343 co-relation queries the response was YES. [2024-06-04 14:41:49,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37444 conditions, 4138 events. 2635/4138 cut-off events. For 565343/565343 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22727 event pairs, 677 based on Foata normal form. 20/4155 useless extension candidates. Maximal degree in co-relation 37347. Up to 3780 conditions per place. [2024-06-04 14:41:49,839 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 243 selfloop transitions, 21 changer transitions 0/269 dead transitions. [2024-06-04 14:41:49,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 269 transitions, 2754 flow [2024-06-04 14:41:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-04 14:41:49,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-04 14:41:49,841 INFO L175 Difference]: Start difference. First operand has 201 places, 226 transitions, 2084 flow. Second operand 10 states and 193 transitions. [2024-06-04 14:41:49,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 269 transitions, 2754 flow [2024-06-04 14:41:50,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 269 transitions, 2678 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:50,377 INFO L231 Difference]: Finished difference. Result has 205 places, 226 transitions, 2057 flow [2024-06-04 14:41:50,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2057, PETRI_PLACES=205, PETRI_TRANSITIONS=226} [2024-06-04 14:41:50,378 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 160 predicate places. [2024-06-04 14:41:50,378 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 226 transitions, 2057 flow [2024-06-04 14:41:50,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:50,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:50,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:50,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:41:50,379 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)] === [2024-06-04 14:41:50,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash 878568764, now seen corresponding path program 4 times [2024-06-04 14:41:50,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:50,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781903138] [2024-06-04 14:41:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:50,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:51,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781903138] [2024-06-04 14:41:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781903138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:51,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:51,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791217649] [2024-06-04 14:41:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:51,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:51,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:51,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 226 transitions, 2057 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:51,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:51,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:51,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:52,379 INFO L124 PetriNetUnfolderBase]: 2607/4094 cut-off events. [2024-06-04 14:41:52,379 INFO L125 PetriNetUnfolderBase]: For 539442/539442 co-relation queries the response was YES. [2024-06-04 14:41:52,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36094 conditions, 4094 events. 2607/4094 cut-off events. For 539442/539442 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22462 event pairs, 632 based on Foata normal form. 16/4107 useless extension candidates. Maximal degree in co-relation 35995. Up to 3493 conditions per place. [2024-06-04 14:41:52,422 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 243 selfloop transitions, 26 changer transitions 0/274 dead transitions. [2024-06-04 14:41:52,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 274 transitions, 2757 flow [2024-06-04 14:41:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:41:52,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:41:52,424 INFO L175 Difference]: Start difference. First operand has 205 places, 226 transitions, 2057 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:41:52,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 274 transitions, 2757 flow [2024-06-04 14:41:52,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 274 transitions, 2694 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:52,767 INFO L231 Difference]: Finished difference. Result has 206 places, 226 transitions, 2052 flow [2024-06-04 14:41:52,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2052, PETRI_PLACES=206, PETRI_TRANSITIONS=226} [2024-06-04 14:41:52,767 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 161 predicate places. [2024-06-04 14:41:52,768 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 226 transitions, 2052 flow [2024-06-04 14:41:52,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:52,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:52,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:52,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:41:52,768 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)] === [2024-06-04 14:41:52,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1094269798, now seen corresponding path program 5 times [2024-06-04 14:41:52,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:52,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650212827] [2024-06-04 14:41:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:53,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650212827] [2024-06-04 14:41:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650212827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:53,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:53,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:53,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847721562] [2024-06-04 14:41:53,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:53,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:53,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:53,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:53,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 226 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:53,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:53,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:53,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:55,200 INFO L124 PetriNetUnfolderBase]: 2682/4228 cut-off events. [2024-06-04 14:41:55,200 INFO L125 PetriNetUnfolderBase]: For 565001/565004 co-relation queries the response was YES. [2024-06-04 14:41:55,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37183 conditions, 4228 events. 2682/4228 cut-off events. For 565001/565004 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 23538 event pairs, 630 based on Foata normal form. 20/4244 useless extension candidates. Maximal degree in co-relation 37083. Up to 3458 conditions per place. [2024-06-04 14:41:55,247 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 180 selfloop transitions, 85 changer transitions 0/270 dead transitions. [2024-06-04 14:41:55,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 270 transitions, 2780 flow [2024-06-04 14:41:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-04 14:41:55,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-04 14:41:55,248 INFO L175 Difference]: Start difference. First operand has 206 places, 226 transitions, 2052 flow. Second operand 10 states and 206 transitions. [2024-06-04 14:41:55,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 270 transitions, 2780 flow [2024-06-04 14:41:55,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 270 transitions, 2685 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 14:41:55,659 INFO L231 Difference]: Finished difference. Result has 206 places, 227 transitions, 2188 flow [2024-06-04 14:41:55,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2188, PETRI_PLACES=206, PETRI_TRANSITIONS=227} [2024-06-04 14:41:55,660 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 161 predicate places. [2024-06-04 14:41:55,660 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 227 transitions, 2188 flow [2024-06-04 14:41:55,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:55,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:55,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:55,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:41:55,660 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)] === [2024-06-04 14:41:55,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:55,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1598703778, now seen corresponding path program 6 times [2024-06-04 14:41:55,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382954679] [2024-06-04 14:41:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:56,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:56,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382954679] [2024-06-04 14:41:56,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382954679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:56,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:56,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:56,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832222407] [2024-06-04 14:41:56,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:56,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:56,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:56,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:56,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 227 transitions, 2188 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:56,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:56,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:56,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:57,819 INFO L124 PetriNetUnfolderBase]: 2740/4336 cut-off events. [2024-06-04 14:41:57,819 INFO L125 PetriNetUnfolderBase]: For 577869/577872 co-relation queries the response was YES. [2024-06-04 14:41:57,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38157 conditions, 4336 events. 2740/4336 cut-off events. For 577869/577872 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24449 event pairs, 630 based on Foata normal form. 16/4348 useless extension candidates. Maximal degree in co-relation 38057. Up to 3446 conditions per place. [2024-06-04 14:41:57,865 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 183 selfloop transitions, 87 changer transitions 0/275 dead transitions. [2024-06-04 14:41:57,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 275 transitions, 2946 flow [2024-06-04 14:41:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-06-04 14:41:57,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-04 14:41:57,867 INFO L175 Difference]: Start difference. First operand has 206 places, 227 transitions, 2188 flow. Second operand 10 states and 210 transitions. [2024-06-04 14:41:57,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 275 transitions, 2946 flow [2024-06-04 14:41:58,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 275 transitions, 2747 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:58,374 INFO L231 Difference]: Finished difference. Result has 208 places, 228 transitions, 2225 flow [2024-06-04 14:41:58,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2225, PETRI_PLACES=208, PETRI_TRANSITIONS=228} [2024-06-04 14:41:58,375 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 163 predicate places. [2024-06-04 14:41:58,375 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 228 transitions, 2225 flow [2024-06-04 14:41:58,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:58,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:58,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:41:58,376 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)] === [2024-06-04 14:41:58,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:58,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1279781440, now seen corresponding path program 7 times [2024-06-04 14:41:58,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:58,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359010536] [2024-06-04 14:41:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359010536] [2024-06-04 14:41:59,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359010536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339041640] [2024-06-04 14:41:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:59,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:59,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:59,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:59,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:41:59,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 228 transitions, 2225 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:59,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:59,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:41:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:00,616 INFO L124 PetriNetUnfolderBase]: 2909/4620 cut-off events. [2024-06-04 14:42:00,617 INFO L125 PetriNetUnfolderBase]: For 642720/642723 co-relation queries the response was YES. [2024-06-04 14:42:00,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41531 conditions, 4620 events. 2909/4620 cut-off events. For 642720/642723 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 26636 event pairs, 668 based on Foata normal form. 16/4632 useless extension candidates. Maximal degree in co-relation 41430. Up to 3383 conditions per place. [2024-06-04 14:42:00,659 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 182 selfloop transitions, 92 changer transitions 0/279 dead transitions. [2024-06-04 14:42:00,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 279 transitions, 3301 flow [2024-06-04 14:42:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-04 14:42:00,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47954545454545455 [2024-06-04 14:42:00,660 INFO L175 Difference]: Start difference. First operand has 208 places, 228 transitions, 2225 flow. Second operand 10 states and 211 transitions. [2024-06-04 14:42:00,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 279 transitions, 3301 flow [2024-06-04 14:42:01,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 279 transitions, 3085 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:01,143 INFO L231 Difference]: Finished difference. Result has 210 places, 230 transitions, 2313 flow [2024-06-04 14:42:01,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2313, PETRI_PLACES=210, PETRI_TRANSITIONS=230} [2024-06-04 14:42:01,144 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 165 predicate places. [2024-06-04 14:42:01,144 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 230 transitions, 2313 flow [2024-06-04 14:42:01,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:01,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:01,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:01,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:42:01,144 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:01,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:01,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1108786060, now seen corresponding path program 8 times [2024-06-04 14:42:01,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:01,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037907483] [2024-06-04 14:42:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:02,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037907483] [2024-06-04 14:42:02,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037907483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:02,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:02,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109194819] [2024-06-04 14:42:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:02,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:02,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 230 transitions, 2313 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:02,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:02,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:03,415 INFO L124 PetriNetUnfolderBase]: 2984/4745 cut-off events. [2024-06-04 14:42:03,415 INFO L125 PetriNetUnfolderBase]: For 672769/672772 co-relation queries the response was YES. [2024-06-04 14:42:03,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42547 conditions, 4745 events. 2984/4745 cut-off events. For 672769/672772 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 27574 event pairs, 703 based on Foata normal form. 20/4761 useless extension candidates. Maximal degree in co-relation 42445. Up to 3960 conditions per place. [2024-06-04 14:42:03,463 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 183 selfloop transitions, 86 changer transitions 0/274 dead transitions. [2024-06-04 14:42:03,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 274 transitions, 3055 flow [2024-06-04 14:42:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-04 14:42:03,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:42:03,464 INFO L175 Difference]: Start difference. First operand has 210 places, 230 transitions, 2313 flow. Second operand 10 states and 205 transitions. [2024-06-04 14:42:03,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 274 transitions, 3055 flow [2024-06-04 14:42:03,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 274 transitions, 2889 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:03,986 INFO L231 Difference]: Finished difference. Result has 214 places, 231 transitions, 2386 flow [2024-06-04 14:42:03,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2386, PETRI_PLACES=214, PETRI_TRANSITIONS=231} [2024-06-04 14:42:03,986 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 169 predicate places. [2024-06-04 14:42:03,990 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 231 transitions, 2386 flow [2024-06-04 14:42:03,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:03,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:03,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:42:03,991 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:04,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1102529950, now seen corresponding path program 9 times [2024-06-04 14:42:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:04,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998355804] [2024-06-04 14:42:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998355804] [2024-06-04 14:42:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998355804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116662736] [2024-06-04 14:42:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:05,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:05,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:05,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:05,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 231 transitions, 2386 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:05,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:05,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:05,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:06,472 INFO L124 PetriNetUnfolderBase]: 3034/4841 cut-off events. [2024-06-04 14:42:06,472 INFO L125 PetriNetUnfolderBase]: For 674866/674869 co-relation queries the response was YES. [2024-06-04 14:42:06,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42788 conditions, 4841 events. 3034/4841 cut-off events. For 674866/674869 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28350 event pairs, 725 based on Foata normal form. 20/4857 useless extension candidates. Maximal degree in co-relation 42684. Up to 4046 conditions per place. [2024-06-04 14:42:06,521 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 181 selfloop transitions, 88 changer transitions 0/274 dead transitions. [2024-06-04 14:42:06,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 274 transitions, 3114 flow [2024-06-04 14:42:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:42:06,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:42:06,523 INFO L175 Difference]: Start difference. First operand has 214 places, 231 transitions, 2386 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:42:06,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 274 transitions, 3114 flow [2024-06-04 14:42:07,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 274 transitions, 2921 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:07,034 INFO L231 Difference]: Finished difference. Result has 216 places, 232 transitions, 2426 flow [2024-06-04 14:42:07,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2426, PETRI_PLACES=216, PETRI_TRANSITIONS=232} [2024-06-04 14:42:07,035 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 171 predicate places. [2024-06-04 14:42:07,035 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 232 transitions, 2426 flow [2024-06-04 14:42:07,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:07,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:07,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:07,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:42:07,036 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:07,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:07,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1432469998, now seen corresponding path program 10 times [2024-06-04 14:42:07,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:07,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025835456] [2024-06-04 14:42:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:07,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025835456] [2024-06-04 14:42:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025835456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331818360] [2024-06-04 14:42:08,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:08,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:08,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:08,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:08,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 232 transitions, 2426 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:08,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:08,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:08,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:09,420 INFO L124 PetriNetUnfolderBase]: 3006/4797 cut-off events. [2024-06-04 14:42:09,420 INFO L125 PetriNetUnfolderBase]: For 646256/646259 co-relation queries the response was YES. [2024-06-04 14:42:09,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41508 conditions, 4797 events. 3006/4797 cut-off events. For 646256/646259 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28016 event pairs, 685 based on Foata normal form. 16/4809 useless extension candidates. Maximal degree in co-relation 41403. Up to 3772 conditions per place. [2024-06-04 14:42:09,473 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 184 selfloop transitions, 89 changer transitions 0/278 dead transitions. [2024-06-04 14:42:09,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 278 transitions, 3132 flow [2024-06-04 14:42:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-06-04 14:42:09,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-06-04 14:42:09,474 INFO L175 Difference]: Start difference. First operand has 216 places, 232 transitions, 2426 flow. Second operand 10 states and 207 transitions. [2024-06-04 14:42:09,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 278 transitions, 3132 flow [2024-06-04 14:42:10,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 278 transitions, 2919 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:10,094 INFO L231 Difference]: Finished difference. Result has 218 places, 232 transitions, 2397 flow [2024-06-04 14:42:10,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2397, PETRI_PLACES=218, PETRI_TRANSITIONS=232} [2024-06-04 14:42:10,094 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 173 predicate places. [2024-06-04 14:42:10,094 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 232 transitions, 2397 flow [2024-06-04 14:42:10,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:10,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:10,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:10,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:42:10,095 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)] === [2024-06-04 14:42:10,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash -898464728, now seen corresponding path program 1 times [2024-06-04 14:42:10,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:10,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097959330] [2024-06-04 14:42:10,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:10,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:10,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:10,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097959330] [2024-06-04 14:42:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097959330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:10,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414041755] [2024-06-04 14:42:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:10,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:10,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:10,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:10,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:10,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 232 transitions, 2397 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:10,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:10,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:10,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:11,814 INFO L124 PetriNetUnfolderBase]: 2828/4591 cut-off events. [2024-06-04 14:42:11,815 INFO L125 PetriNetUnfolderBase]: For 621153/621156 co-relation queries the response was YES. [2024-06-04 14:42:11,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40190 conditions, 4591 events. 2828/4591 cut-off events. For 621153/621156 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27559 event pairs, 757 based on Foata normal form. 3/4554 useless extension candidates. Maximal degree in co-relation 40084. Up to 4192 conditions per place. [2024-06-04 14:42:11,866 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 206 selfloop transitions, 19 changer transitions 0/254 dead transitions. [2024-06-04 14:42:11,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 254 transitions, 2945 flow [2024-06-04 14:42:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 14:42:11,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-04 14:42:11,868 INFO L175 Difference]: Start difference. First operand has 218 places, 232 transitions, 2397 flow. Second operand 7 states and 139 transitions. [2024-06-04 14:42:11,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 254 transitions, 2945 flow [2024-06-04 14:42:12,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 254 transitions, 2727 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:12,480 INFO L231 Difference]: Finished difference. Result has 216 places, 235 transitions, 2279 flow [2024-06-04 14:42:12,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2279, PETRI_PLACES=216, PETRI_TRANSITIONS=235} [2024-06-04 14:42:12,481 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 171 predicate places. [2024-06-04 14:42:12,484 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 235 transitions, 2279 flow [2024-06-04 14:42:12,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:12,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:12,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:12,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:42:12,485 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)] === [2024-06-04 14:42:12,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1030954144, now seen corresponding path program 2 times [2024-06-04 14:42:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:12,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422216809] [2024-06-04 14:42:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:12,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:13,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422216809] [2024-06-04 14:42:13,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422216809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:13,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:13,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:13,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139437709] [2024-06-04 14:42:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:13,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:13,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:13,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:13,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:13,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 235 transitions, 2279 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:13,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:13,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:13,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:14,131 INFO L124 PetriNetUnfolderBase]: 2841/4619 cut-off events. [2024-06-04 14:42:14,132 INFO L125 PetriNetUnfolderBase]: For 635342/635345 co-relation queries the response was YES. [2024-06-04 14:42:14,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40326 conditions, 4619 events. 2841/4619 cut-off events. For 635342/635345 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 27787 event pairs, 757 based on Foata normal form. 3/4582 useless extension candidates. Maximal degree in co-relation 40219. Up to 4200 conditions per place. [2024-06-04 14:42:14,183 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 205 selfloop transitions, 26 changer transitions 0/260 dead transitions. [2024-06-04 14:42:14,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 260 transitions, 3058 flow [2024-06-04 14:42:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:14,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 14:42:14,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-04 14:42:14,185 INFO L175 Difference]: Start difference. First operand has 216 places, 235 transitions, 2279 flow. Second operand 7 states and 138 transitions. [2024-06-04 14:42:14,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 260 transitions, 3058 flow [2024-06-04 14:42:14,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 260 transitions, 2980 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 14:42:14,846 INFO L231 Difference]: Finished difference. Result has 219 places, 243 transitions, 2405 flow [2024-06-04 14:42:14,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2405, PETRI_PLACES=219, PETRI_TRANSITIONS=243} [2024-06-04 14:42:14,847 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 174 predicate places. [2024-06-04 14:42:14,847 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 243 transitions, 2405 flow [2024-06-04 14:42:14,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:14,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:14,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:14,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:42:14,847 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:14,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1102283686, now seen corresponding path program 1 times [2024-06-04 14:42:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15927788] [2024-06-04 14:42:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:14,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15927788] [2024-06-04 14:42:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15927788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:15,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:15,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:15,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528587736] [2024-06-04 14:42:15,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:15,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:15,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:15,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 243 transitions, 2405 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:15,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:15,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:15,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:17,088 INFO L124 PetriNetUnfolderBase]: 3041/4871 cut-off events. [2024-06-04 14:42:17,089 INFO L125 PetriNetUnfolderBase]: For 666075/666078 co-relation queries the response was YES. [2024-06-04 14:42:17,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42379 conditions, 4871 events. 3041/4871 cut-off events. For 666075/666078 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 28714 event pairs, 739 based on Foata normal form. 4/4871 useless extension candidates. Maximal degree in co-relation 42270. Up to 4452 conditions per place. [2024-06-04 14:42:17,139 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 234 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2024-06-04 14:42:17,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 284 transitions, 3143 flow [2024-06-04 14:42:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 14:42:17,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-04 14:42:17,141 INFO L175 Difference]: Start difference. First operand has 219 places, 243 transitions, 2405 flow. Second operand 10 states and 194 transitions. [2024-06-04 14:42:17,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 284 transitions, 3143 flow [2024-06-04 14:42:17,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 284 transitions, 3061 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-04 14:42:17,817 INFO L231 Difference]: Finished difference. Result has 227 places, 248 transitions, 2518 flow [2024-06-04 14:42:17,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2518, PETRI_PLACES=227, PETRI_TRANSITIONS=248} [2024-06-04 14:42:17,817 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 182 predicate places. [2024-06-04 14:42:17,817 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 248 transitions, 2518 flow [2024-06-04 14:42:17,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:17,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:17,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:42:17,818 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:42:17,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1030944224, now seen corresponding path program 1 times [2024-06-04 14:42:17,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:17,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37610056] [2024-06-04 14:42:17,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:18,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:18,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37610056] [2024-06-04 14:42:18,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37610056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:18,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:18,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:42:18,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018783347] [2024-06-04 14:42:18,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:18,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:42:18,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:42:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:42:18,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:42:18,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 248 transitions, 2518 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:42:18,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:18,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:42:18,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:19,858 INFO L124 PetriNetUnfolderBase]: 2708/4471 cut-off events. [2024-06-04 14:42:19,859 INFO L125 PetriNetUnfolderBase]: For 675284/675300 co-relation queries the response was YES. [2024-06-04 14:42:19,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40983 conditions, 4471 events. 2708/4471 cut-off events. For 675284/675300 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27287 event pairs, 696 based on Foata normal form. 6/4416 useless extension candidates. Maximal degree in co-relation 40871. Up to 3918 conditions per place. [2024-06-04 14:42:19,908 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 202 selfloop transitions, 21 changer transitions 0/268 dead transitions. [2024-06-04 14:42:19,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 268 transitions, 3058 flow [2024-06-04 14:42:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:42:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:42:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:42:19,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:42:19,910 INFO L175 Difference]: Start difference. First operand has 227 places, 248 transitions, 2518 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:42:19,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 268 transitions, 3058 flow [2024-06-04 14:42:20,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 268 transitions, 2905 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:20,507 INFO L231 Difference]: Finished difference. Result has 228 places, 251 transitions, 2471 flow [2024-06-04 14:42:20,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2471, PETRI_PLACES=228, PETRI_TRANSITIONS=251} [2024-06-04 14:42:20,508 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 183 predicate places. [2024-06-04 14:42:20,508 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 251 transitions, 2471 flow [2024-06-04 14:42:20,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:42:20,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:20,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:20,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:42:20,509 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)] === [2024-06-04 14:42:20,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:20,509 INFO L85 PathProgramCache]: Analyzing trace with hash 833042910, now seen corresponding path program 11 times [2024-06-04 14:42:20,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:20,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129674305] [2024-06-04 14:42:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:21,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129674305] [2024-06-04 14:42:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129674305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:21,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:21,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390802673] [2024-06-04 14:42:21,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:21,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:21,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:21,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:21,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 251 transitions, 2471 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:21,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:21,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:21,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:23,181 INFO L124 PetriNetUnfolderBase]: 3126/4991 cut-off events. [2024-06-04 14:42:23,182 INFO L125 PetriNetUnfolderBase]: For 741327/741330 co-relation queries the response was YES. [2024-06-04 14:42:23,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44594 conditions, 4991 events. 3126/4991 cut-off events. For 741327/741330 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 29372 event pairs, 702 based on Foata normal form. 20/5004 useless extension candidates. Maximal degree in co-relation 44481. Up to 4193 conditions per place. [2024-06-04 14:42:23,233 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 200 selfloop transitions, 87 changer transitions 0/292 dead transitions. [2024-06-04 14:42:23,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 292 transitions, 3255 flow [2024-06-04 14:42:23,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-04 14:42:23,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45681818181818185 [2024-06-04 14:42:23,235 INFO L175 Difference]: Start difference. First operand has 228 places, 251 transitions, 2471 flow. Second operand 10 states and 201 transitions. [2024-06-04 14:42:23,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 292 transitions, 3255 flow [2024-06-04 14:42:23,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 292 transitions, 3171 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:23,785 INFO L231 Difference]: Finished difference. Result has 232 places, 252 transitions, 2630 flow [2024-06-04 14:42:23,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2630, PETRI_PLACES=232, PETRI_TRANSITIONS=252} [2024-06-04 14:42:23,786 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 187 predicate places. [2024-06-04 14:42:23,786 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 252 transitions, 2630 flow [2024-06-04 14:42:23,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:23,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:23,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:23,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:42:23,787 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)] === [2024-06-04 14:42:23,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash 645863778, now seen corresponding path program 12 times [2024-06-04 14:42:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:23,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694070812] [2024-06-04 14:42:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:23,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:24,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:24,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694070812] [2024-06-04 14:42:24,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694070812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:24,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:24,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:24,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837835992] [2024-06-04 14:42:24,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:24,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:24,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:24,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 252 transitions, 2630 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:24,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:24,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:24,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:26,155 INFO L124 PetriNetUnfolderBase]: 3201/5126 cut-off events. [2024-06-04 14:42:26,155 INFO L125 PetriNetUnfolderBase]: For 770677/770680 co-relation queries the response was YES. [2024-06-04 14:42:26,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46229 conditions, 5126 events. 3201/5126 cut-off events. For 770677/770680 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 30396 event pairs, 726 based on Foata normal form. 20/5139 useless extension candidates. Maximal degree in co-relation 46115. Up to 4318 conditions per place. [2024-06-04 14:42:26,211 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 203 selfloop transitions, 86 changer transitions 0/294 dead transitions. [2024-06-04 14:42:26,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 294 transitions, 3426 flow [2024-06-04 14:42:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:42:26,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:42:26,213 INFO L175 Difference]: Start difference. First operand has 232 places, 252 transitions, 2630 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:42:26,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 294 transitions, 3426 flow [2024-06-04 14:42:26,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 294 transitions, 3215 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:26,904 INFO L231 Difference]: Finished difference. Result has 234 places, 253 transitions, 2662 flow [2024-06-04 14:42:26,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2662, PETRI_PLACES=234, PETRI_TRANSITIONS=253} [2024-06-04 14:42:26,905 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 189 predicate places. [2024-06-04 14:42:26,905 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 253 transitions, 2662 flow [2024-06-04 14:42:26,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:26,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:26,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:26,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:42:26,906 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)] === [2024-06-04 14:42:26,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1956821894, now seen corresponding path program 13 times [2024-06-04 14:42:26,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:26,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275491573] [2024-06-04 14:42:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:26,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275491573] [2024-06-04 14:42:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275491573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:27,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238823685] [2024-06-04 14:42:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:27,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:28,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:28,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 253 transitions, 2662 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:28,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:28,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:28,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:29,359 INFO L124 PetriNetUnfolderBase]: 3259/5234 cut-off events. [2024-06-04 14:42:29,359 INFO L125 PetriNetUnfolderBase]: For 779960/779963 co-relation queries the response was YES. [2024-06-04 14:42:29,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46897 conditions, 5234 events. 3259/5234 cut-off events. For 779960/779963 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31286 event pairs, 726 based on Foata normal form. 16/5243 useless extension candidates. Maximal degree in co-relation 46782. Up to 4186 conditions per place. [2024-06-04 14:42:29,420 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 204 selfloop transitions, 89 changer transitions 0/298 dead transitions. [2024-06-04 14:42:29,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 298 transitions, 3482 flow [2024-06-04 14:42:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-04 14:42:29,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:42:29,425 INFO L175 Difference]: Start difference. First operand has 234 places, 253 transitions, 2662 flow. Second operand 10 states and 205 transitions. [2024-06-04 14:42:29,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 298 transitions, 3482 flow [2024-06-04 14:42:30,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 298 transitions, 3271 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:30,141 INFO L231 Difference]: Finished difference. Result has 236 places, 254 transitions, 2701 flow [2024-06-04 14:42:30,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2701, PETRI_PLACES=236, PETRI_TRANSITIONS=254} [2024-06-04 14:42:30,141 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 191 predicate places. [2024-06-04 14:42:30,142 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 254 transitions, 2701 flow [2024-06-04 14:42:30,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:30,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:30,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:30,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:42:30,142 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)] === [2024-06-04 14:42:30,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2127524324, now seen corresponding path program 14 times [2024-06-04 14:42:30,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:30,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301433465] [2024-06-04 14:42:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:30,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:31,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:31,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301433465] [2024-06-04 14:42:31,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301433465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:31,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:31,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:31,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389943160] [2024-06-04 14:42:31,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:31,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:31,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:31,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:31,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:31,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:31,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 254 transitions, 2701 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:31,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:31,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:31,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:32,878 INFO L124 PetriNetUnfolderBase]: 3428/5523 cut-off events. [2024-06-04 14:42:32,879 INFO L125 PetriNetUnfolderBase]: For 863673/863676 co-relation queries the response was YES. [2024-06-04 14:42:32,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50655 conditions, 5523 events. 3428/5523 cut-off events. For 863673/863676 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33611 event pairs, 769 based on Foata normal form. 16/5532 useless extension candidates. Maximal degree in co-relation 50539. Up to 4539 conditions per place. [2024-06-04 14:42:32,936 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 206 selfloop transitions, 91 changer transitions 0/302 dead transitions. [2024-06-04 14:42:32,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 302 transitions, 3889 flow [2024-06-04 14:42:32,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-04 14:42:32,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-04 14:42:32,938 INFO L175 Difference]: Start difference. First operand has 236 places, 254 transitions, 2701 flow. Second operand 10 states and 206 transitions. [2024-06-04 14:42:32,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 302 transitions, 3889 flow [2024-06-04 14:42:33,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 302 transitions, 3659 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:33,724 INFO L231 Difference]: Finished difference. Result has 238 places, 256 transitions, 2793 flow [2024-06-04 14:42:33,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2793, PETRI_PLACES=238, PETRI_TRANSITIONS=256} [2024-06-04 14:42:33,725 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 193 predicate places. [2024-06-04 14:42:33,725 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 256 transitions, 2793 flow [2024-06-04 14:42:33,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:33,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:33,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:33,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:42:33,726 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)] === [2024-06-04 14:42:33,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1333108326, now seen corresponding path program 15 times [2024-06-04 14:42:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:33,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803842368] [2024-06-04 14:42:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:33,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803842368] [2024-06-04 14:42:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803842368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:34,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:34,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:34,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975554083] [2024-06-04 14:42:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:34,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:34,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:34,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:34,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 256 transitions, 2793 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:34,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:34,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:34,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:36,163 INFO L124 PetriNetUnfolderBase]: 3392/5467 cut-off events. [2024-06-04 14:42:36,163 INFO L125 PetriNetUnfolderBase]: For 833750/833753 co-relation queries the response was YES. [2024-06-04 14:42:36,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48566 conditions, 5467 events. 3392/5467 cut-off events. For 833750/833753 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33233 event pairs, 771 based on Foata normal form. 20/5480 useless extension candidates. Maximal degree in co-relation 48449. Up to 4639 conditions per place. [2024-06-04 14:42:36,226 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 202 selfloop transitions, 89 changer transitions 0/296 dead transitions. [2024-06-04 14:42:36,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 296 transitions, 3525 flow [2024-06-04 14:42:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:36,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-04 14:42:36,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:42:36,228 INFO L175 Difference]: Start difference. First operand has 238 places, 256 transitions, 2793 flow. Second operand 10 states and 200 transitions. [2024-06-04 14:42:36,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 296 transitions, 3525 flow [2024-06-04 14:42:37,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 296 transitions, 3325 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:37,042 INFO L231 Difference]: Finished difference. Result has 242 places, 256 transitions, 2778 flow [2024-06-04 14:42:37,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2778, PETRI_PLACES=242, PETRI_TRANSITIONS=256} [2024-06-04 14:42:37,042 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 197 predicate places. [2024-06-04 14:42:37,043 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 256 transitions, 2778 flow [2024-06-04 14:42:37,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:37,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:37,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:37,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:42:37,043 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)] === [2024-06-04 14:42:37,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:37,043 INFO L85 PathProgramCache]: Analyzing trace with hash 655791420, now seen corresponding path program 16 times [2024-06-04 14:42:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:37,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884034434] [2024-06-04 14:42:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:38,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884034434] [2024-06-04 14:42:38,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884034434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:38,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:38,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:38,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758478396] [2024-06-04 14:42:38,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:38,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:38,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:38,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:38,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:38,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:38,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 256 transitions, 2778 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:38,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:38,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:38,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:39,479 INFO L124 PetriNetUnfolderBase]: 3511/5668 cut-off events. [2024-06-04 14:42:39,479 INFO L125 PetriNetUnfolderBase]: For 874079/874082 co-relation queries the response was YES. [2024-06-04 14:42:39,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50976 conditions, 5668 events. 3511/5668 cut-off events. For 874079/874082 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 34724 event pairs, 776 based on Foata normal form. 16/5677 useless extension candidates. Maximal degree in co-relation 50857. Up to 4023 conditions per place. [2024-06-04 14:42:39,548 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 199 selfloop transitions, 100 changer transitions 0/304 dead transitions. [2024-06-04 14:42:39,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 304 transitions, 3978 flow [2024-06-04 14:42:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-04 14:42:39,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-04 14:42:39,550 INFO L175 Difference]: Start difference. First operand has 242 places, 256 transitions, 2778 flow. Second operand 10 states and 205 transitions. [2024-06-04 14:42:39,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 304 transitions, 3978 flow [2024-06-04 14:42:40,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 304 transitions, 3793 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:40,423 INFO L231 Difference]: Finished difference. Result has 243 places, 258 transitions, 2937 flow [2024-06-04 14:42:40,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2937, PETRI_PLACES=243, PETRI_TRANSITIONS=258} [2024-06-04 14:42:40,423 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 198 predicate places. [2024-06-04 14:42:40,424 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 258 transitions, 2937 flow [2024-06-04 14:42:40,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:40,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:40,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:42:40,425 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)] === [2024-06-04 14:42:40,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash 796459854, now seen corresponding path program 17 times [2024-06-04 14:42:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:40,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596097373] [2024-06-04 14:42:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:40,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596097373] [2024-06-04 14:42:41,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596097373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:41,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:41,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742541610] [2024-06-04 14:42:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:41,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:41,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:41,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 258 transitions, 2937 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:41,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:41,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:41,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:43,200 INFO L124 PetriNetUnfolderBase]: 3586/5803 cut-off events. [2024-06-04 14:42:43,201 INFO L125 PetriNetUnfolderBase]: For 919066/919069 co-relation queries the response was YES. [2024-06-04 14:42:43,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52505 conditions, 5803 events. 3586/5803 cut-off events. For 919066/919069 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 35929 event pairs, 830 based on Foata normal form. 20/5816 useless extension candidates. Maximal degree in co-relation 52385. Up to 4965 conditions per place. [2024-06-04 14:42:43,267 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 204 selfloop transitions, 90 changer transitions 0/299 dead transitions. [2024-06-04 14:42:43,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 299 transitions, 3745 flow [2024-06-04 14:42:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-04 14:42:43,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-04 14:42:43,269 INFO L175 Difference]: Start difference. First operand has 243 places, 258 transitions, 2937 flow. Second operand 10 states and 199 transitions. [2024-06-04 14:42:43,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 299 transitions, 3745 flow [2024-06-04 14:42:44,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 299 transitions, 3554 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:44,113 INFO L231 Difference]: Finished difference. Result has 247 places, 259 transitions, 3005 flow [2024-06-04 14:42:44,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3005, PETRI_PLACES=247, PETRI_TRANSITIONS=259} [2024-06-04 14:42:44,114 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 202 predicate places. [2024-06-04 14:42:44,114 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 259 transitions, 3005 flow [2024-06-04 14:42:44,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:44,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:44,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:44,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:42:44,115 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)] === [2024-06-04 14:42:44,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash 796282224, now seen corresponding path program 18 times [2024-06-04 14:42:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452498207] [2024-06-04 14:42:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452498207] [2024-06-04 14:42:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452498207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:45,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:45,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:45,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775163627] [2024-06-04 14:42:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:45,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:45,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:45,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:45,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:45,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 259 transitions, 3005 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:45,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:45,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:45,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:46,712 INFO L124 PetriNetUnfolderBase]: 3644/5901 cut-off events. [2024-06-04 14:42:46,712 INFO L125 PetriNetUnfolderBase]: For 916863/916866 co-relation queries the response was YES. [2024-06-04 14:42:46,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53020 conditions, 5901 events. 3644/5901 cut-off events. For 916863/916866 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 36684 event pairs, 816 based on Foata normal form. 16/5910 useless extension candidates. Maximal degree in co-relation 52898. Up to 4772 conditions per place. [2024-06-04 14:42:46,785 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 207 selfloop transitions, 93 changer transitions 0/305 dead transitions. [2024-06-04 14:42:46,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 305 transitions, 4135 flow [2024-06-04 14:42:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-04 14:42:46,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-04 14:42:46,787 INFO L175 Difference]: Start difference. First operand has 247 places, 259 transitions, 3005 flow. Second operand 10 states and 203 transitions. [2024-06-04 14:42:46,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 305 transitions, 4135 flow [2024-06-04 14:42:47,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 305 transitions, 3924 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:47,556 INFO L231 Difference]: Finished difference. Result has 249 places, 260 transitions, 3044 flow [2024-06-04 14:42:47,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3044, PETRI_PLACES=249, PETRI_TRANSITIONS=260} [2024-06-04 14:42:47,557 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 204 predicate places. [2024-06-04 14:42:47,557 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 260 transitions, 3044 flow [2024-06-04 14:42:47,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:47,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:47,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:42:47,558 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)] === [2024-06-04 14:42:47,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:47,558 INFO L85 PathProgramCache]: Analyzing trace with hash 802715964, now seen corresponding path program 19 times [2024-06-04 14:42:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827212620] [2024-06-04 14:42:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:48,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:48,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827212620] [2024-06-04 14:42:48,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827212620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:48,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:48,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:48,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614582691] [2024-06-04 14:42:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:48,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:48,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:48,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:48,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 3044 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:48,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:48,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:48,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:50,354 INFO L124 PetriNetUnfolderBase]: 3719/6026 cut-off events. [2024-06-04 14:42:50,354 INFO L125 PetriNetUnfolderBase]: For 952896/952899 co-relation queries the response was YES. [2024-06-04 14:42:50,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54042 conditions, 6026 events. 3719/6026 cut-off events. For 952896/952899 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 37770 event pairs, 846 based on Foata normal form. 20/6039 useless extension candidates. Maximal degree in co-relation 53919. Up to 5188 conditions per place. [2024-06-04 14:42:50,436 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 207 selfloop transitions, 89 changer transitions 0/301 dead transitions. [2024-06-04 14:42:50,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 301 transitions, 3846 flow [2024-06-04 14:42:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-04 14:42:50,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:42:50,438 INFO L175 Difference]: Start difference. First operand has 249 places, 260 transitions, 3044 flow. Second operand 10 states and 200 transitions. [2024-06-04 14:42:50,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 301 transitions, 3846 flow [2024-06-04 14:42:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 301 transitions, 3520 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:51,308 INFO L231 Difference]: Finished difference. Result has 250 places, 261 transitions, 2965 flow [2024-06-04 14:42:51,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2965, PETRI_PLACES=250, PETRI_TRANSITIONS=261} [2024-06-04 14:42:51,308 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 205 predicate places. [2024-06-04 14:42:51,308 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 261 transitions, 2965 flow [2024-06-04 14:42:51,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:51,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:51,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:51,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:42:51,309 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)] === [2024-06-04 14:42:51,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash 164297182, now seen corresponding path program 20 times [2024-06-04 14:42:51,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933570622] [2024-06-04 14:42:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:52,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:52,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933570622] [2024-06-04 14:42:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933570622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:52,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:52,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:42:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373411315] [2024-06-04 14:42:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:42:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:42:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:42:52,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:42:52,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 261 transitions, 2965 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:52,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:52,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:42:52,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:53,973 INFO L124 PetriNetUnfolderBase]: 3683/5970 cut-off events. [2024-06-04 14:42:53,973 INFO L125 PetriNetUnfolderBase]: For 904742/904745 co-relation queries the response was YES. [2024-06-04 14:42:54,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51400 conditions, 5970 events. 3683/5970 cut-off events. For 904742/904745 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 37294 event pairs, 833 based on Foata normal form. 20/5983 useless extension candidates. Maximal degree in co-relation 51277. Up to 5132 conditions per place. [2024-06-04 14:42:54,043 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 199 selfloop transitions, 96 changer transitions 0/300 dead transitions. [2024-06-04 14:42:54,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 300 transitions, 3699 flow [2024-06-04 14:42:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:42:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:42:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-04 14:42:54,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-04 14:42:54,045 INFO L175 Difference]: Start difference. First operand has 250 places, 261 transitions, 2965 flow. Second operand 10 states and 197 transitions. [2024-06-04 14:42:54,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 300 transitions, 3699 flow [2024-06-04 14:42:54,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 300 transitions, 3460 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:55,000 INFO L231 Difference]: Finished difference. Result has 252 places, 261 transitions, 2925 flow [2024-06-04 14:42:55,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2925, PETRI_PLACES=252, PETRI_TRANSITIONS=261} [2024-06-04 14:42:55,001 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 207 predicate places. [2024-06-04 14:42:55,001 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 261 transitions, 2925 flow [2024-06-04 14:42:55,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:55,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:55,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:55,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:42:55,001 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)] === [2024-06-04 14:42:55,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:55,002 INFO L85 PathProgramCache]: Analyzing trace with hash -699162938, now seen corresponding path program 3 times [2024-06-04 14:42:55,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:55,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186630227] [2024-06-04 14:42:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:55,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186630227] [2024-06-04 14:42:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186630227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627527954] [2024-06-04 14:42:55,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:55,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:55,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:55,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:55,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 261 transitions, 2925 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:55,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:55,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:55,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:56,884 INFO L124 PetriNetUnfolderBase]: 3470/5709 cut-off events. [2024-06-04 14:42:56,884 INFO L125 PetriNetUnfolderBase]: For 847288/847294 co-relation queries the response was YES. [2024-06-04 14:42:56,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49626 conditions, 5709 events. 3470/5709 cut-off events. For 847288/847294 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36560 event pairs, 874 based on Foata normal form. 5/5637 useless extension candidates. Maximal degree in co-relation 49502. Up to 5259 conditions per place. [2024-06-04 14:42:56,950 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 230 selfloop transitions, 19 changer transitions 0/278 dead transitions. [2024-06-04 14:42:56,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 278 transitions, 3470 flow [2024-06-04 14:42:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 14:42:56,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 14:42:56,952 INFO L175 Difference]: Start difference. First operand has 252 places, 261 transitions, 2925 flow. Second operand 7 states and 136 transitions. [2024-06-04 14:42:56,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 278 transitions, 3470 flow [2024-06-04 14:42:57,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 278 transitions, 3235 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:57,747 INFO L231 Difference]: Finished difference. Result has 250 places, 262 transitions, 2743 flow [2024-06-04 14:42:57,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2743, PETRI_PLACES=250, PETRI_TRANSITIONS=262} [2024-06-04 14:42:57,747 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 205 predicate places. [2024-06-04 14:42:57,748 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 262 transitions, 2743 flow [2024-06-04 14:42:57,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:57,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:57,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:57,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:42:57,748 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)] === [2024-06-04 14:42:57,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:57,749 INFO L85 PathProgramCache]: Analyzing trace with hash -685830458, now seen corresponding path program 4 times [2024-06-04 14:42:57,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:57,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793448080] [2024-06-04 14:42:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:58,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:58,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793448080] [2024-06-04 14:42:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793448080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:42:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615617872] [2024-06-04 14:42:58,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:42:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:42:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:42:58,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:42:58,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 262 transitions, 2743 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:58,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:58,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:42:58,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:59,669 INFO L124 PetriNetUnfolderBase]: 3475/5716 cut-off events. [2024-06-04 14:42:59,669 INFO L125 PetriNetUnfolderBase]: For 863595/863601 co-relation queries the response was YES. [2024-06-04 14:42:59,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49393 conditions, 5716 events. 3475/5716 cut-off events. For 863595/863601 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36603 event pairs, 874 based on Foata normal form. 5/5644 useless extension candidates. Maximal degree in co-relation 49268. Up to 5257 conditions per place. [2024-06-04 14:42:59,738 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 222 selfloop transitions, 27 changer transitions 0/278 dead transitions. [2024-06-04 14:42:59,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 278 transitions, 3337 flow [2024-06-04 14:42:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:42:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:42:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 14:42:59,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-04 14:42:59,740 INFO L175 Difference]: Start difference. First operand has 250 places, 262 transitions, 2743 flow. Second operand 7 states and 134 transitions. [2024-06-04 14:42:59,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 278 transitions, 3337 flow [2024-06-04 14:43:00,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 278 transitions, 3295 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:00,526 INFO L231 Difference]: Finished difference. Result has 252 places, 265 transitions, 2831 flow [2024-06-04 14:43:00,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2831, PETRI_PLACES=252, PETRI_TRANSITIONS=265} [2024-06-04 14:43:00,527 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 207 predicate places. [2024-06-04 14:43:00,527 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 265 transitions, 2831 flow [2024-06-04 14:43:00,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:00,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:00,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:00,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:43:00,527 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)] === [2024-06-04 14:43:00,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1097628832, now seen corresponding path program 5 times [2024-06-04 14:43:00,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:00,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296926153] [2024-06-04 14:43:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:00,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:01,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:01,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296926153] [2024-06-04 14:43:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296926153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:01,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:01,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444590950] [2024-06-04 14:43:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:01,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:01,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:01,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 265 transitions, 2831 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:01,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:01,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:01,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:02,407 INFO L124 PetriNetUnfolderBase]: 3480/5727 cut-off events. [2024-06-04 14:43:02,407 INFO L125 PetriNetUnfolderBase]: For 881713/881722 co-relation queries the response was YES. [2024-06-04 14:43:02,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50007 conditions, 5727 events. 3480/5727 cut-off events. For 881713/881722 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36716 event pairs, 884 based on Foata normal form. 7/5655 useless extension candidates. Maximal degree in co-relation 49881. Up to 5242 conditions per place. [2024-06-04 14:43:02,477 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 212 selfloop transitions, 44 changer transitions 0/285 dead transitions. [2024-06-04 14:43:02,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 285 transitions, 3718 flow [2024-06-04 14:43:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 14:43:02,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-04 14:43:02,478 INFO L175 Difference]: Start difference. First operand has 252 places, 265 transitions, 2831 flow. Second operand 7 states and 134 transitions. [2024-06-04 14:43:02,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 285 transitions, 3718 flow [2024-06-04 14:43:03,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 285 transitions, 3610 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:03,363 INFO L231 Difference]: Finished difference. Result has 255 places, 274 transitions, 3020 flow [2024-06-04 14:43:03,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3020, PETRI_PLACES=255, PETRI_TRANSITIONS=274} [2024-06-04 14:43:03,363 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 210 predicate places. [2024-06-04 14:43:03,363 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 274 transitions, 3020 flow [2024-06-04 14:43:03,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:03,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:03,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:03,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:43:03,364 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)] === [2024-06-04 14:43:03,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1097836222, now seen corresponding path program 6 times [2024-06-04 14:43:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:03,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995932735] [2024-06-04 14:43:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:04,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:04,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995932735] [2024-06-04 14:43:04,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995932735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:04,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:04,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:43:04,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509653906] [2024-06-04 14:43:04,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:04,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:43:04,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:04,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:43:04,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:43:04,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:04,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 274 transitions, 3020 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:04,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:04,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:05,418 INFO L124 PetriNetUnfolderBase]: 3477/5721 cut-off events. [2024-06-04 14:43:05,418 INFO L125 PetriNetUnfolderBase]: For 897974/897983 co-relation queries the response was YES. [2024-06-04 14:43:05,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50403 conditions, 5721 events. 3477/5721 cut-off events. For 897974/897983 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36649 event pairs, 881 based on Foata normal form. 7/5649 useless extension candidates. Maximal degree in co-relation 50275. Up to 5239 conditions per place. [2024-06-04 14:43:05,488 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 211 selfloop transitions, 44 changer transitions 0/284 dead transitions. [2024-06-04 14:43:05,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 284 transitions, 3554 flow [2024-06-04 14:43:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:43:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:43:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 14:43:05,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:43:05,489 INFO L175 Difference]: Start difference. First operand has 255 places, 274 transitions, 3020 flow. Second operand 7 states and 133 transitions. [2024-06-04 14:43:05,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 284 transitions, 3554 flow [2024-06-04 14:43:06,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 284 transitions, 3410 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-04 14:43:06,323 INFO L231 Difference]: Finished difference. Result has 260 places, 274 transitions, 2970 flow [2024-06-04 14:43:06,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2970, PETRI_PLACES=260, PETRI_TRANSITIONS=274} [2024-06-04 14:43:06,324 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 215 predicate places. [2024-06-04 14:43:06,324 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 274 transitions, 2970 flow [2024-06-04 14:43:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:06,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:06,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:06,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:43:06,324 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash 234025890, now seen corresponding path program 2 times [2024-06-04 14:43:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567309959] [2024-06-04 14:43:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:07,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567309959] [2024-06-04 14:43:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567309959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:07,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:07,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167844301] [2024-06-04 14:43:07,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:07,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:07,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:07,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:07,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 274 transitions, 2970 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:07,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:07,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:07,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:08,796 INFO L124 PetriNetUnfolderBase]: 3704/6026 cut-off events. [2024-06-04 14:43:08,796 INFO L125 PetriNetUnfolderBase]: For 927256/927262 co-relation queries the response was YES. [2024-06-04 14:43:08,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51877 conditions, 6026 events. 3704/6026 cut-off events. For 927256/927262 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 37959 event pairs, 899 based on Foata normal form. 8/6029 useless extension candidates. Maximal degree in co-relation 51747. Up to 5563 conditions per place. [2024-06-04 14:43:08,868 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 260 selfloop transitions, 48 changer transitions 0/313 dead transitions. [2024-06-04 14:43:08,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 313 transitions, 3783 flow [2024-06-04 14:43:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-04 14:43:08,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:43:08,869 INFO L175 Difference]: Start difference. First operand has 260 places, 274 transitions, 2970 flow. Second operand 10 states and 190 transitions. [2024-06-04 14:43:08,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 313 transitions, 3783 flow [2024-06-04 14:43:09,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 313 transitions, 3663 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:09,802 INFO L231 Difference]: Finished difference. Result has 265 places, 279 transitions, 3068 flow [2024-06-04 14:43:09,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3068, PETRI_PLACES=265, PETRI_TRANSITIONS=279} [2024-06-04 14:43:09,802 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 220 predicate places. [2024-06-04 14:43:09,803 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 279 transitions, 3068 flow [2024-06-04 14:43:09,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:09,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:09,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:43:09,803 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:09,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash 172587016, now seen corresponding path program 3 times [2024-06-04 14:43:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89865046] [2024-06-04 14:43:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:10,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89865046] [2024-06-04 14:43:10,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89865046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:10,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:10,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:10,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921354424] [2024-06-04 14:43:10,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:10,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:10,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:10,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:10,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 279 transitions, 3068 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:10,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:10,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:10,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:12,481 INFO L124 PetriNetUnfolderBase]: 3732/6064 cut-off events. [2024-06-04 14:43:12,482 INFO L125 PetriNetUnfolderBase]: For 951603/951609 co-relation queries the response was YES. [2024-06-04 14:43:12,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53017 conditions, 6064 events. 3732/6064 cut-off events. For 951603/951609 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 38152 event pairs, 894 based on Foata normal form. 8/6067 useless extension candidates. Maximal degree in co-relation 52886. Up to 5602 conditions per place. [2024-06-04 14:43:12,558 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 257 selfloop transitions, 59 changer transitions 0/321 dead transitions. [2024-06-04 14:43:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 321 transitions, 3943 flow [2024-06-04 14:43:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-04 14:43:12,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-04 14:43:12,560 INFO L175 Difference]: Start difference. First operand has 265 places, 279 transitions, 3068 flow. Second operand 10 states and 188 transitions. [2024-06-04 14:43:12,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 321 transitions, 3943 flow [2024-06-04 14:43:13,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 321 transitions, 3754 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-04 14:43:13,622 INFO L231 Difference]: Finished difference. Result has 269 places, 289 transitions, 3190 flow [2024-06-04 14:43:13,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3190, PETRI_PLACES=269, PETRI_TRANSITIONS=289} [2024-06-04 14:43:13,623 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 224 predicate places. [2024-06-04 14:43:13,623 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 289 transitions, 3190 flow [2024-06-04 14:43:13,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:13,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:13,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:13,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:43:13,624 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:13,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 786769382, now seen corresponding path program 4 times [2024-06-04 14:43:13,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:13,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553804451] [2024-06-04 14:43:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:14,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:14,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553804451] [2024-06-04 14:43:14,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553804451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:14,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:14,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430495499] [2024-06-04 14:43:14,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:14,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:14,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:14,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:14,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:14,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 289 transitions, 3190 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:14,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:14,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:14,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:16,177 INFO L124 PetriNetUnfolderBase]: 3749/6091 cut-off events. [2024-06-04 14:43:16,177 INFO L125 PetriNetUnfolderBase]: For 973813/973819 co-relation queries the response was YES. [2024-06-04 14:43:16,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53915 conditions, 6091 events. 3749/6091 cut-off events. For 973813/973819 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 38387 event pairs, 842 based on Foata normal form. 8/6094 useless extension candidates. Maximal degree in co-relation 53782. Up to 5523 conditions per place. [2024-06-04 14:43:16,247 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 255 selfloop transitions, 68 changer transitions 0/328 dead transitions. [2024-06-04 14:43:16,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 328 transitions, 4438 flow [2024-06-04 14:43:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-04 14:43:16,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-04 14:43:16,249 INFO L175 Difference]: Start difference. First operand has 269 places, 289 transitions, 3190 flow. Second operand 10 states and 191 transitions. [2024-06-04 14:43:16,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 328 transitions, 4438 flow [2024-06-04 14:43:17,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 328 transitions, 4273 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-04 14:43:17,218 INFO L231 Difference]: Finished difference. Result has 274 places, 293 transitions, 3356 flow [2024-06-04 14:43:17,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3356, PETRI_PLACES=274, PETRI_TRANSITIONS=293} [2024-06-04 14:43:17,218 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 229 predicate places. [2024-06-04 14:43:17,218 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 293 transitions, 3356 flow [2024-06-04 14:43:17,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:17,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:17,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:17,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:43:17,219 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:17,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 164543446, now seen corresponding path program 5 times [2024-06-04 14:43:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:17,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333499488] [2024-06-04 14:43:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:17,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333499488] [2024-06-04 14:43:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333499488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006931266] [2024-06-04 14:43:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:18,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:18,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 293 transitions, 3356 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:18,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:18,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:18,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:19,959 INFO L124 PetriNetUnfolderBase]: 3766/6128 cut-off events. [2024-06-04 14:43:19,960 INFO L125 PetriNetUnfolderBase]: For 993476/993482 co-relation queries the response was YES. [2024-06-04 14:43:20,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53488 conditions, 6128 events. 3766/6128 cut-off events. For 993476/993482 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 38718 event pairs, 904 based on Foata normal form. 8/6131 useless extension candidates. Maximal degree in co-relation 53354. Up to 5656 conditions per place. [2024-06-04 14:43:20,035 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 266 selfloop transitions, 57 changer transitions 0/328 dead transitions. [2024-06-04 14:43:20,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 328 transitions, 4191 flow [2024-06-04 14:43:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-04 14:43:20,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42954545454545456 [2024-06-04 14:43:20,037 INFO L175 Difference]: Start difference. First operand has 274 places, 293 transitions, 3356 flow. Second operand 10 states and 189 transitions. [2024-06-04 14:43:20,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 328 transitions, 4191 flow [2024-06-04 14:43:21,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 328 transitions, 3963 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:21,284 INFO L231 Difference]: Finished difference. Result has 279 places, 296 transitions, 3372 flow [2024-06-04 14:43:21,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3372, PETRI_PLACES=279, PETRI_TRANSITIONS=296} [2024-06-04 14:43:21,284 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 234 predicate places. [2024-06-04 14:43:21,284 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 296 transitions, 3372 flow [2024-06-04 14:43:21,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:21,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:21,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:21,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:43:21,285 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:21,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash 833289174, now seen corresponding path program 6 times [2024-06-04 14:43:21,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:21,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559880229] [2024-06-04 14:43:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:21,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:22,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559880229] [2024-06-04 14:43:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559880229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:22,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:22,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:43:22,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502861474] [2024-06-04 14:43:22,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:22,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:43:22,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:22,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:43:22,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:43:22,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:43:22,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 296 transitions, 3372 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:22,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:22,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:43:22,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:24,005 INFO L124 PetriNetUnfolderBase]: 3758/6126 cut-off events. [2024-06-04 14:43:24,005 INFO L125 PetriNetUnfolderBase]: For 992877/992883 co-relation queries the response was YES. [2024-06-04 14:43:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53033 conditions, 6126 events. 3758/6126 cut-off events. For 992877/992883 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38813 event pairs, 912 based on Foata normal form. 8/6129 useless extension candidates. Maximal degree in co-relation 52896. Up to 5644 conditions per place. [2024-06-04 14:43:24,086 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 269 selfloop transitions, 54 changer transitions 0/328 dead transitions. [2024-06-04 14:43:24,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 328 transitions, 4098 flow [2024-06-04 14:43:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:43:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:43:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-04 14:43:24,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-04 14:43:24,087 INFO L175 Difference]: Start difference. First operand has 279 places, 296 transitions, 3372 flow. Second operand 10 states and 191 transitions. [2024-06-04 14:43:24,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 328 transitions, 4098 flow [2024-06-04 14:43:25,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 328 transitions, 3889 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-04 14:43:25,491 INFO L231 Difference]: Finished difference. Result has 282 places, 296 transitions, 3278 flow [2024-06-04 14:43:25,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3278, PETRI_PLACES=282, PETRI_TRANSITIONS=296} [2024-06-04 14:43:25,491 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 237 predicate places. [2024-06-04 14:43:25,491 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 296 transitions, 3278 flow [2024-06-04 14:43:25,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:25,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:25,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:25,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:43:25,492 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)] === [2024-06-04 14:43:25,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1103332832, now seen corresponding path program 2 times [2024-06-04 14:43:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:25,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512089877] [2024-06-04 14:43:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:25,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512089877] [2024-06-04 14:43:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512089877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:26,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:26,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272417780] [2024-06-04 14:43:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:26,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:26,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:26,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:43:26,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 296 transitions, 3278 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:43:26,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:26,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:43:26,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:27,749 INFO L124 PetriNetUnfolderBase]: 3402/5683 cut-off events. [2024-06-04 14:43:27,749 INFO L125 PetriNetUnfolderBase]: For 1011351/1011363 co-relation queries the response was YES. [2024-06-04 14:43:27,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50548 conditions, 5683 events. 3402/5683 cut-off events. For 1011351/1011363 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37358 event pairs, 848 based on Foata normal form. 4/5596 useless extension candidates. Maximal degree in co-relation 50410. Up to 5045 conditions per place. [2024-06-04 14:43:27,824 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 224 selfloop transitions, 28 changer transitions 0/311 dead transitions. [2024-06-04 14:43:27,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 311 transitions, 3872 flow [2024-06-04 14:43:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:43:27,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:43:27,825 INFO L175 Difference]: Start difference. First operand has 282 places, 296 transitions, 3278 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:43:27,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 311 transitions, 3872 flow [2024-06-04 14:43:29,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 311 transitions, 3685 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-04 14:43:29,257 INFO L231 Difference]: Finished difference. Result has 277 places, 299 transitions, 3217 flow [2024-06-04 14:43:29,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3217, PETRI_PLACES=277, PETRI_TRANSITIONS=299} [2024-06-04 14:43:29,257 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-04 14:43:29,257 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 299 transitions, 3217 flow [2024-06-04 14:43:29,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:43:29,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:29,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:29,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:43:29,258 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)] === [2024-06-04 14:43:29,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1088600702, now seen corresponding path program 3 times [2024-06-04 14:43:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:29,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89280473] [2024-06-04 14:43:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89280473] [2024-06-04 14:43:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89280473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:30,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:30,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260153557] [2024-06-04 14:43:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:30,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:30,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:43:30,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 299 transitions, 3217 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:43:30,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:30,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:43:30,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:31,569 INFO L124 PetriNetUnfolderBase]: 3407/5713 cut-off events. [2024-06-04 14:43:31,569 INFO L125 PetriNetUnfolderBase]: For 1042902/1042922 co-relation queries the response was YES. [2024-06-04 14:43:31,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51183 conditions, 5713 events. 3407/5713 cut-off events. For 1042902/1042922 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37884 event pairs, 857 based on Foata normal form. 6/5629 useless extension candidates. Maximal degree in co-relation 51048. Up to 5027 conditions per place. [2024-06-04 14:43:31,636 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 218 selfloop transitions, 47 changer transitions 0/324 dead transitions. [2024-06-04 14:43:31,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 324 transitions, 4379 flow [2024-06-04 14:43:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 14:43:31,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:43:31,637 INFO L175 Difference]: Start difference. First operand has 277 places, 299 transitions, 3217 flow. Second operand 8 states and 160 transitions. [2024-06-04 14:43:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 324 transitions, 4379 flow [2024-06-04 14:43:33,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 324 transitions, 4279 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:33,175 INFO L231 Difference]: Finished difference. Result has 279 places, 308 transitions, 3415 flow [2024-06-04 14:43:33,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3415, PETRI_PLACES=279, PETRI_TRANSITIONS=308} [2024-06-04 14:43:33,175 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 234 predicate places. [2024-06-04 14:43:33,175 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 308 transitions, 3415 flow [2024-06-04 14:43:33,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:43:33,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:33,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:33,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:43:33,176 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)] === [2024-06-04 14:43:33,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1088095712, now seen corresponding path program 4 times [2024-06-04 14:43:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536928628] [2024-06-04 14:43:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:33,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536928628] [2024-06-04 14:43:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536928628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:34,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:34,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949612038] [2024-06-04 14:43:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:34,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:34,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:43:34,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 308 transitions, 3415 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:43:34,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:34,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:43:34,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:35,635 INFO L124 PetriNetUnfolderBase]: 3395/5709 cut-off events. [2024-06-04 14:43:35,636 INFO L125 PetriNetUnfolderBase]: For 1046906/1046914 co-relation queries the response was YES. [2024-06-04 14:43:35,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51225 conditions, 5709 events. 3395/5709 cut-off events. For 1046906/1046914 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37819 event pairs, 850 based on Foata normal form. 6/5631 useless extension candidates. Maximal degree in co-relation 51089. Up to 5090 conditions per place. [2024-06-04 14:43:35,710 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 245 selfloop transitions, 17 changer transitions 0/321 dead transitions. [2024-06-04 14:43:35,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 321 transitions, 3977 flow [2024-06-04 14:43:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:43:35,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:43:35,711 INFO L175 Difference]: Start difference. First operand has 279 places, 308 transitions, 3415 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:43:35,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 321 transitions, 3977 flow [2024-06-04 14:43:36,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 321 transitions, 3842 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-04 14:43:36,708 INFO L231 Difference]: Finished difference. Result has 284 places, 308 transitions, 3320 flow [2024-06-04 14:43:36,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3320, PETRI_PLACES=284, PETRI_TRANSITIONS=308} [2024-06-04 14:43:36,711 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 239 predicate places. [2024-06-04 14:43:36,711 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 308 transitions, 3320 flow [2024-06-04 14:43:36,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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) [2024-06-04 14:43:36,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:36,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:36,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:43:36,712 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)] === [2024-06-04 14:43:36,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash -691536442, now seen corresponding path program 1 times [2024-06-04 14:43:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:36,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657874975] [2024-06-04 14:43:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:37,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657874975] [2024-06-04 14:43:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657874975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:37,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474497254] [2024-06-04 14:43:37,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:37,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:37,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:37,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 308 transitions, 3320 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:37,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:37,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:37,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:38,941 INFO L124 PetriNetUnfolderBase]: 3674/6068 cut-off events. [2024-06-04 14:43:38,941 INFO L125 PetriNetUnfolderBase]: For 1060775/1060775 co-relation queries the response was YES. [2024-06-04 14:43:38,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53331 conditions, 6068 events. 3674/6068 cut-off events. For 1060775/1060775 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 39190 event pairs, 878 based on Foata normal form. 2/6063 useless extension candidates. Maximal degree in co-relation 53193. Up to 5631 conditions per place. [2024-06-04 14:43:39,020 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 305 selfloop transitions, 17 changer transitions 0/332 dead transitions. [2024-06-04 14:43:39,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 332 transitions, 4082 flow [2024-06-04 14:43:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:43:39,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:43:39,021 INFO L175 Difference]: Start difference. First operand has 284 places, 308 transitions, 3320 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:43:39,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 332 transitions, 4082 flow [2024-06-04 14:43:40,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 332 transitions, 4006 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:40,265 INFO L231 Difference]: Finished difference. Result has 284 places, 311 transitions, 3354 flow [2024-06-04 14:43:40,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3354, PETRI_PLACES=284, PETRI_TRANSITIONS=311} [2024-06-04 14:43:40,266 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 239 predicate places. [2024-06-04 14:43:40,266 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 311 transitions, 3354 flow [2024-06-04 14:43:40,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:40,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:40,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:40,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:43:40,266 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)] === [2024-06-04 14:43:40,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash 165313346, now seen corresponding path program 2 times [2024-06-04 14:43:40,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:40,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786723873] [2024-06-04 14:43:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:40,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:41,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786723873] [2024-06-04 14:43:41,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786723873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:41,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:41,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:41,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273952309] [2024-06-04 14:43:41,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:41,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:41,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:41,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:41,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:41,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 311 transitions, 3354 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:41,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:41,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:41,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:42,357 INFO L124 PetriNetUnfolderBase]: 3679/6089 cut-off events. [2024-06-04 14:43:42,358 INFO L125 PetriNetUnfolderBase]: For 1081506/1081506 co-relation queries the response was YES. [2024-06-04 14:43:42,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54084 conditions, 6089 events. 3679/6089 cut-off events. For 1081506/1081506 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 39442 event pairs, 886 based on Foata normal form. 2/6084 useless extension candidates. Maximal degree in co-relation 53946. Up to 5631 conditions per place. [2024-06-04 14:43:42,436 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 301 selfloop transitions, 22 changer transitions 0/333 dead transitions. [2024-06-04 14:43:42,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 333 transitions, 4120 flow [2024-06-04 14:43:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:43:42,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:43:42,438 INFO L175 Difference]: Start difference. First operand has 284 places, 311 transitions, 3354 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:43:42,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 333 transitions, 4120 flow [2024-06-04 14:43:44,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 333 transitions, 4032 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:44,143 INFO L231 Difference]: Finished difference. Result has 286 places, 314 transitions, 3392 flow [2024-06-04 14:43:44,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3392, PETRI_PLACES=286, PETRI_TRANSITIONS=314} [2024-06-04 14:43:44,144 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 241 predicate places. [2024-06-04 14:43:44,144 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 314 transitions, 3392 flow [2024-06-04 14:43:44,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:44,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:44,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:44,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:43:44,144 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:44,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:44,145 INFO L85 PathProgramCache]: Analyzing trace with hash -691386495, now seen corresponding path program 1 times [2024-06-04 14:43:44,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:44,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78692720] [2024-06-04 14:43:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:44,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:45,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:45,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78692720] [2024-06-04 14:43:45,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78692720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:45,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:45,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:45,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995321093] [2024-06-04 14:43:45,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:45,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:45,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:45,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 314 transitions, 3392 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:45,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:45,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:46,444 INFO L124 PetriNetUnfolderBase]: 3682/6094 cut-off events. [2024-06-04 14:43:46,444 INFO L125 PetriNetUnfolderBase]: For 1102534/1102536 co-relation queries the response was YES. [2024-06-04 14:43:46,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54699 conditions, 6094 events. 3682/6094 cut-off events. For 1102534/1102536 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 39515 event pairs, 885 based on Foata normal form. 2/6088 useless extension candidates. Maximal degree in co-relation 54560. Up to 5654 conditions per place. [2024-06-04 14:43:46,530 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 307 selfloop transitions, 17 changer transitions 0/334 dead transitions. [2024-06-04 14:43:46,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 334 transitions, 4148 flow [2024-06-04 14:43:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:43:46,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:43:46,532 INFO L175 Difference]: Start difference. First operand has 286 places, 314 transitions, 3392 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:43:46,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 334 transitions, 4148 flow [2024-06-04 14:43:48,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 334 transitions, 4044 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:48,428 INFO L231 Difference]: Finished difference. Result has 288 places, 317 transitions, 3400 flow [2024-06-04 14:43:48,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3288, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3400, PETRI_PLACES=288, PETRI_TRANSITIONS=317} [2024-06-04 14:43:48,429 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 243 predicate places. [2024-06-04 14:43:48,429 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 317 transitions, 3400 flow [2024-06-04 14:43:48,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:48,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:48,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:48,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:43:48,430 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)] === [2024-06-04 14:43:48,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash -685814865, now seen corresponding path program 2 times [2024-06-04 14:43:48,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:48,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563539440] [2024-06-04 14:43:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:49,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:49,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563539440] [2024-06-04 14:43:49,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563539440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:49,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:49,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240250979] [2024-06-04 14:43:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:49,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:49,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:49,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:49,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 317 transitions, 3400 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:49,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:49,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:49,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:50,997 INFO L124 PetriNetUnfolderBase]: 3713/6129 cut-off events. [2024-06-04 14:43:50,997 INFO L125 PetriNetUnfolderBase]: For 1141669/1141673 co-relation queries the response was YES. [2024-06-04 14:43:51,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55839 conditions, 6129 events. 3713/6129 cut-off events. For 1141669/1141673 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39641 event pairs, 877 based on Foata normal form. 2/6123 useless extension candidates. Maximal degree in co-relation 55699. Up to 5662 conditions per place. [2024-06-04 14:43:51,075 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 299 selfloop transitions, 31 changer transitions 0/340 dead transitions. [2024-06-04 14:43:51,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 340 transitions, 4466 flow [2024-06-04 14:43:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:43:51,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:43:51,076 INFO L175 Difference]: Start difference. First operand has 288 places, 317 transitions, 3400 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:43:51,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 340 transitions, 4466 flow [2024-06-04 14:43:52,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 340 transitions, 4376 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:52,900 INFO L231 Difference]: Finished difference. Result has 290 places, 323 transitions, 3533 flow [2024-06-04 14:43:52,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3533, PETRI_PLACES=290, PETRI_TRANSITIONS=323} [2024-06-04 14:43:52,900 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 245 predicate places. [2024-06-04 14:43:52,900 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 323 transitions, 3533 flow [2024-06-04 14:43:52,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:52,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:52,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:52,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:43:52,902 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)] === [2024-06-04 14:43:52,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash 174530226, now seen corresponding path program 3 times [2024-06-04 14:43:52,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:52,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270650691] [2024-06-04 14:43:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:52,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:53,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:53,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270650691] [2024-06-04 14:43:53,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270650691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:53,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:53,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:53,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491572627] [2024-06-04 14:43:53,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:53,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:53,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:53,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:53,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 323 transitions, 3533 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:53,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:53,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:53,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:55,197 INFO L124 PetriNetUnfolderBase]: 3723/6145 cut-off events. [2024-06-04 14:43:55,197 INFO L125 PetriNetUnfolderBase]: For 1161698/1161700 co-relation queries the response was YES. [2024-06-04 14:43:55,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56470 conditions, 6145 events. 3723/6145 cut-off events. For 1161698/1161700 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39761 event pairs, 879 based on Foata normal form. 2/6139 useless extension candidates. Maximal degree in co-relation 56329. Up to 5680 conditions per place. [2024-06-04 14:43:55,284 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 303 selfloop transitions, 29 changer transitions 0/342 dead transitions. [2024-06-04 14:43:55,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 342 transitions, 4319 flow [2024-06-04 14:43:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:43:55,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:43:55,285 INFO L175 Difference]: Start difference. First operand has 290 places, 323 transitions, 3533 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:43:55,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 342 transitions, 4319 flow [2024-06-04 14:43:57,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 342 transitions, 4223 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-04 14:43:57,409 INFO L231 Difference]: Finished difference. Result has 294 places, 326 transitions, 3587 flow [2024-06-04 14:43:57,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3587, PETRI_PLACES=294, PETRI_TRANSITIONS=326} [2024-06-04 14:43:57,409 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 249 predicate places. [2024-06-04 14:43:57,409 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 326 transitions, 3587 flow [2024-06-04 14:43:57,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:57,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:57,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:43:57,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:43:57,410 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:43:57,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:57,410 INFO L85 PathProgramCache]: Analyzing trace with hash 170877753, now seen corresponding path program 3 times [2024-06-04 14:43:57,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:57,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262823867] [2024-06-04 14:43:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:57,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262823867] [2024-06-04 14:43:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262823867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:58,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:43:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354388903] [2024-06-04 14:43:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:58,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:43:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:43:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:43:58,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:43:58,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 326 transitions, 3587 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:58,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:58,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:43:58,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:59,728 INFO L124 PetriNetUnfolderBase]: 3717/6137 cut-off events. [2024-06-04 14:43:59,729 INFO L125 PetriNetUnfolderBase]: For 1170912/1170914 co-relation queries the response was YES. [2024-06-04 14:43:59,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56749 conditions, 6137 events. 3717/6137 cut-off events. For 1170912/1170914 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 39680 event pairs, 878 based on Foata normal form. 2/6131 useless extension candidates. Maximal degree in co-relation 56606. Up to 5697 conditions per place. [2024-06-04 14:43:59,813 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 311 selfloop transitions, 22 changer transitions 0/343 dead transitions. [2024-06-04 14:43:59,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 343 transitions, 4353 flow [2024-06-04 14:43:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:43:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:43:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:43:59,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:43:59,815 INFO L175 Difference]: Start difference. First operand has 294 places, 326 transitions, 3587 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:43:59,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 343 transitions, 4353 flow [2024-06-04 14:44:01,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 343 transitions, 4225 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:01,578 INFO L231 Difference]: Finished difference. Result has 296 places, 329 transitions, 3581 flow [2024-06-04 14:44:01,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3581, PETRI_PLACES=296, PETRI_TRANSITIONS=329} [2024-06-04 14:44:01,578 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 251 predicate places. [2024-06-04 14:44:01,578 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 329 transitions, 3581 flow [2024-06-04 14:44:01,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:01,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:01,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:01,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:44:01,579 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:44:01,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1088416469, now seen corresponding path program 4 times [2024-06-04 14:44:01,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:01,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499405074] [2024-06-04 14:44:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:02,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499405074] [2024-06-04 14:44:02,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499405074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:02,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:02,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446535024] [2024-06-04 14:44:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:02,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:02,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 329 transitions, 3581 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:02,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:02,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:02,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:04,074 INFO L124 PetriNetUnfolderBase]: 3727/6152 cut-off events. [2024-06-04 14:44:04,074 INFO L125 PetriNetUnfolderBase]: For 1194550/1194557 co-relation queries the response was YES. [2024-06-04 14:44:04,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57093 conditions, 6152 events. 3727/6152 cut-off events. For 1194550/1194557 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 39805 event pairs, 878 based on Foata normal form. 2/6145 useless extension candidates. Maximal degree in co-relation 56949. Up to 5633 conditions per place. [2024-06-04 14:44:04,147 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 287 selfloop transitions, 53 changer transitions 0/350 dead transitions. [2024-06-04 14:44:04,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 350 transitions, 4695 flow [2024-06-04 14:44:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 14:44:04,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-04 14:44:04,148 INFO L175 Difference]: Start difference. First operand has 296 places, 329 transitions, 3581 flow. Second operand 8 states and 153 transitions. [2024-06-04 14:44:04,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 350 transitions, 4695 flow [2024-06-04 14:44:06,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 350 transitions, 4599 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:06,093 INFO L231 Difference]: Finished difference. Result has 298 places, 335 transitions, 3767 flow [2024-06-04 14:44:06,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3485, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3767, PETRI_PLACES=298, PETRI_TRANSITIONS=335} [2024-06-04 14:44:06,094 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 253 predicate places. [2024-06-04 14:44:06,094 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 335 transitions, 3767 flow [2024-06-04 14:44:06,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:06,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:06,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:06,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:44:06,095 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:44:06,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:06,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1097613239, now seen corresponding path program 5 times [2024-06-04 14:44:06,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:06,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146400495] [2024-06-04 14:44:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:06,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146400495] [2024-06-04 14:44:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146400495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:07,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469003502] [2024-06-04 14:44:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:07,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:07,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 335 transitions, 3767 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:07,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:07,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:07,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:08,692 INFO L124 PetriNetUnfolderBase]: 3742/6173 cut-off events. [2024-06-04 14:44:08,693 INFO L125 PetriNetUnfolderBase]: For 1213075/1213080 co-relation queries the response was YES. [2024-06-04 14:44:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57837 conditions, 6173 events. 3742/6173 cut-off events. For 1213075/1213080 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39955 event pairs, 887 based on Foata normal form. 1/6166 useless extension candidates. Maximal degree in co-relation 57692. Up to 5713 conditions per place. [2024-06-04 14:44:08,774 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 312 selfloop transitions, 33 changer transitions 0/355 dead transitions. [2024-06-04 14:44:08,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 355 transitions, 4885 flow [2024-06-04 14:44:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:44:08,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:44:08,776 INFO L175 Difference]: Start difference. First operand has 298 places, 335 transitions, 3767 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:44:08,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 355 transitions, 4885 flow [2024-06-04 14:44:10,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 355 transitions, 4746 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-04 14:44:10,530 INFO L231 Difference]: Finished difference. Result has 303 places, 343 transitions, 3903 flow [2024-06-04 14:44:10,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3903, PETRI_PLACES=303, PETRI_TRANSITIONS=343} [2024-06-04 14:44:10,530 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 258 predicate places. [2024-06-04 14:44:10,531 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 343 transitions, 3903 flow [2024-06-04 14:44:10,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:10,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:10,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:10,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:44:10,531 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)] === [2024-06-04 14:44:10,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1097620896, now seen corresponding path program 4 times [2024-06-04 14:44:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:10,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514967537] [2024-06-04 14:44:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:10,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:11,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:11,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514967537] [2024-06-04 14:44:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514967537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:11,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:11,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204136382] [2024-06-04 14:44:11,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:11,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:11,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:11,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 343 transitions, 3903 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:11,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:11,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:11,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:12,859 INFO L124 PetriNetUnfolderBase]: 3744/6178 cut-off events. [2024-06-04 14:44:12,859 INFO L125 PetriNetUnfolderBase]: For 1226492/1226495 co-relation queries the response was YES. [2024-06-04 14:44:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57726 conditions, 6178 events. 3744/6178 cut-off events. For 1226492/1226495 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40002 event pairs, 891 based on Foata normal form. 2/6172 useless extension candidates. Maximal degree in co-relation 57578. Up to 5694 conditions per place. [2024-06-04 14:44:12,943 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 311 selfloop transitions, 38 changer transitions 0/359 dead transitions. [2024-06-04 14:44:12,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 359 transitions, 4721 flow [2024-06-04 14:44:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:44:12,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:44:12,944 INFO L175 Difference]: Start difference. First operand has 303 places, 343 transitions, 3903 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:44:12,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 359 transitions, 4721 flow [2024-06-04 14:44:14,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 359 transitions, 4623 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 14:44:14,976 INFO L231 Difference]: Finished difference. Result has 307 places, 346 transitions, 3979 flow [2024-06-04 14:44:14,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3979, PETRI_PLACES=307, PETRI_TRANSITIONS=346} [2024-06-04 14:44:14,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 262 predicate places. [2024-06-04 14:44:14,976 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 346 transitions, 3979 flow [2024-06-04 14:44:14,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:14,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:14,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:14,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:44:14,977 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)] === [2024-06-04 14:44:14,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1281960939, now seen corresponding path program 6 times [2024-06-04 14:44:14,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:14,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986606747] [2024-06-04 14:44:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:14,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:16,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:16,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986606747] [2024-06-04 14:44:16,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986606747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:16,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:16,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:16,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434791132] [2024-06-04 14:44:16,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:16,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:16,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:16,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:16,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:16,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:16,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 346 transitions, 3979 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:16,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:16,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:16,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:17,366 INFO L124 PetriNetUnfolderBase]: 3738/6180 cut-off events. [2024-06-04 14:44:17,366 INFO L125 PetriNetUnfolderBase]: For 1236884/1236887 co-relation queries the response was YES. [2024-06-04 14:44:17,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58112 conditions, 6180 events. 3738/6180 cut-off events. For 1236884/1236887 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40185 event pairs, 896 based on Foata normal form. 2/6174 useless extension candidates. Maximal degree in co-relation 57962. Up to 5717 conditions per place. [2024-06-04 14:44:17,453 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 319 selfloop transitions, 29 changer transitions 0/358 dead transitions. [2024-06-04 14:44:17,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 358 transitions, 4714 flow [2024-06-04 14:44:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 14:44:17,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:44:17,454 INFO L175 Difference]: Start difference. First operand has 307 places, 346 transitions, 3979 flow. Second operand 8 states and 147 transitions. [2024-06-04 14:44:17,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 358 transitions, 4714 flow [2024-06-04 14:44:19,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 358 transitions, 4492 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:19,970 INFO L231 Difference]: Finished difference. Result has 309 places, 347 transitions, 3836 flow [2024-06-04 14:44:19,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3836, PETRI_PLACES=309, PETRI_TRANSITIONS=347} [2024-06-04 14:44:19,971 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 264 predicate places. [2024-06-04 14:44:19,971 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 347 transitions, 3836 flow [2024-06-04 14:44:19,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:19,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:19,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:19,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:44:19,972 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)] === [2024-06-04 14:44:19,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1088077856, now seen corresponding path program 1 times [2024-06-04 14:44:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:19,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546945017] [2024-06-04 14:44:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:19,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:21,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:21,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546945017] [2024-06-04 14:44:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546945017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:21,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:21,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:21,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710553583] [2024-06-04 14:44:21,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:21,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:21,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:21,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:21,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:21,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:44:21,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 347 transitions, 3836 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:21,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:21,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:44:21,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:22,806 INFO L124 PetriNetUnfolderBase]: 3503/5862 cut-off events. [2024-06-04 14:44:22,806 INFO L125 PetriNetUnfolderBase]: For 1243524/1243528 co-relation queries the response was YES. [2024-06-04 14:44:22,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56286 conditions, 5862 events. 3503/5862 cut-off events. For 1243524/1243528 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38648 event pairs, 850 based on Foata normal form. 2/5780 useless extension candidates. Maximal degree in co-relation 56135. Up to 5191 conditions per place. [2024-06-04 14:44:22,890 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 279 selfloop transitions, 16 changer transitions 0/362 dead transitions. [2024-06-04 14:44:22,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 362 transitions, 4536 flow [2024-06-04 14:44:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:44:22,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:44:22,891 INFO L175 Difference]: Start difference. First operand has 309 places, 347 transitions, 3836 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:44:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 362 transitions, 4536 flow [2024-06-04 14:44:24,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 362 transitions, 4476 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:24,925 INFO L231 Difference]: Finished difference. Result has 311 places, 349 transitions, 3887 flow [2024-06-04 14:44:24,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3776, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3887, PETRI_PLACES=311, PETRI_TRANSITIONS=349} [2024-06-04 14:44:24,925 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 266 predicate places. [2024-06-04 14:44:24,925 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 349 transitions, 3887 flow [2024-06-04 14:44:24,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:24,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:24,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:24,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:44:24,926 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)] === [2024-06-04 14:44:24,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:24,926 INFO L85 PathProgramCache]: Analyzing trace with hash -675568666, now seen corresponding path program 1 times [2024-06-04 14:44:24,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:24,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477599892] [2024-06-04 14:44:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:24,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:25,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:25,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477599892] [2024-06-04 14:44:25,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477599892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:25,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:25,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127236260] [2024-06-04 14:44:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:25,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:25,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:25,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 349 transitions, 3887 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:25,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:25,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:25,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:27,271 INFO L124 PetriNetUnfolderBase]: 3696/6071 cut-off events. [2024-06-04 14:44:27,271 INFO L125 PetriNetUnfolderBase]: For 1261451/1261451 co-relation queries the response was YES. [2024-06-04 14:44:27,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58195 conditions, 6071 events. 3696/6071 cut-off events. For 1261451/1261451 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39219 event pairs, 866 based on Foata normal form. 1/5997 useless extension candidates. Maximal degree in co-relation 58043. Up to 5552 conditions per place. [2024-06-04 14:44:27,356 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 324 selfloop transitions, 17 changer transitions 0/378 dead transitions. [2024-06-04 14:44:27,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 378 transitions, 4729 flow [2024-06-04 14:44:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:44:27,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:44:27,357 INFO L175 Difference]: Start difference. First operand has 311 places, 349 transitions, 3887 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:44:27,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 378 transitions, 4729 flow [2024-06-04 14:44:29,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 378 transitions, 4634 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:29,577 INFO L231 Difference]: Finished difference. Result has 313 places, 352 transitions, 3932 flow [2024-06-04 14:44:29,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3932, PETRI_PLACES=313, PETRI_TRANSITIONS=352} [2024-06-04 14:44:29,577 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 268 predicate places. [2024-06-04 14:44:29,578 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 352 transitions, 3932 flow [2024-06-04 14:44:29,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:29,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:29,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:29,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:44:29,578 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)] === [2024-06-04 14:44:29,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash -667950106, now seen corresponding path program 2 times [2024-06-04 14:44:29,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:29,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548015102] [2024-06-04 14:44:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:29,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:30,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:30,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548015102] [2024-06-04 14:44:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548015102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:30,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:30,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:30,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909833375] [2024-06-04 14:44:30,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:30,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:30,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:30,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:30,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:30,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 352 transitions, 3932 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:30,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:30,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:31,874 INFO L124 PetriNetUnfolderBase]: 3706/6087 cut-off events. [2024-06-04 14:44:31,874 INFO L125 PetriNetUnfolderBase]: For 1283894/1283894 co-relation queries the response was YES. [2024-06-04 14:44:31,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58820 conditions, 6087 events. 3706/6087 cut-off events. For 1283894/1283894 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39340 event pairs, 866 based on Foata normal form. 1/6013 useless extension candidates. Maximal degree in co-relation 58667. Up to 5560 conditions per place. [2024-06-04 14:44:31,962 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 325 selfloop transitions, 23 changer transitions 0/385 dead transitions. [2024-06-04 14:44:31,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 385 transitions, 4819 flow [2024-06-04 14:44:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:44:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:44:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 14:44:31,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-04 14:44:31,975 INFO L175 Difference]: Start difference. First operand has 313 places, 352 transitions, 3932 flow. Second operand 9 states and 174 transitions. [2024-06-04 14:44:31,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 385 transitions, 4819 flow [2024-06-04 14:44:33,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 385 transitions, 4701 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:33,744 INFO L231 Difference]: Finished difference. Result has 317 places, 358 transitions, 4009 flow [2024-06-04 14:44:33,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4009, PETRI_PLACES=317, PETRI_TRANSITIONS=358} [2024-06-04 14:44:33,744 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 272 predicate places. [2024-06-04 14:44:33,745 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 358 transitions, 4009 flow [2024-06-04 14:44:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:33,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:33,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:44:33,745 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)] === [2024-06-04 14:44:33,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2045476508, now seen corresponding path program 1 times [2024-06-04 14:44:33,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689470568] [2024-06-04 14:44:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:34,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:34,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689470568] [2024-06-04 14:44:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689470568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:34,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:34,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370375559] [2024-06-04 14:44:34,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:34,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:34,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:34,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 358 transitions, 4009 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:34,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:34,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:34,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:35,985 INFO L124 PetriNetUnfolderBase]: 3714/6099 cut-off events. [2024-06-04 14:44:35,986 INFO L125 PetriNetUnfolderBase]: For 1316023/1316023 co-relation queries the response was YES. [2024-06-04 14:44:36,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59504 conditions, 6099 events. 3714/6099 cut-off events. For 1316023/1316023 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39367 event pairs, 714 based on Foata normal form. 2/6056 useless extension candidates. Maximal degree in co-relation 59349. Up to 5552 conditions per place. [2024-06-04 14:44:36,075 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 336 selfloop transitions, 15 changer transitions 0/388 dead transitions. [2024-06-04 14:44:36,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 388 transitions, 4847 flow [2024-06-04 14:44:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 14:44:36,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-04 14:44:36,077 INFO L175 Difference]: Start difference. First operand has 317 places, 358 transitions, 4009 flow. Second operand 8 states and 158 transitions. [2024-06-04 14:44:36,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 388 transitions, 4847 flow [2024-06-04 14:44:38,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 388 transitions, 4715 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:38,288 INFO L231 Difference]: Finished difference. Result has 319 places, 360 transitions, 3982 flow [2024-06-04 14:44:38,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3877, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3982, PETRI_PLACES=319, PETRI_TRANSITIONS=360} [2024-06-04 14:44:38,288 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 274 predicate places. [2024-06-04 14:44:38,288 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 360 transitions, 3982 flow [2024-06-04 14:44:38,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:38,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:38,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:38,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:44:38,289 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)] === [2024-06-04 14:44:38,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2055952028, now seen corresponding path program 2 times [2024-06-04 14:44:38,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:38,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440487275] [2024-06-04 14:44:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:39,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440487275] [2024-06-04 14:44:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440487275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:39,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:39,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147079174] [2024-06-04 14:44:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:39,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:39,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:39,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 360 transitions, 3982 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:39,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:39,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:39,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:40,576 INFO L124 PetriNetUnfolderBase]: 3722/6111 cut-off events. [2024-06-04 14:44:40,577 INFO L125 PetriNetUnfolderBase]: For 1337225/1337225 co-relation queries the response was YES. [2024-06-04 14:44:40,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59898 conditions, 6111 events. 3722/6111 cut-off events. For 1337225/1337225 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39502 event pairs, 864 based on Foata normal form. 2/6038 useless extension candidates. Maximal degree in co-relation 59742. Up to 5593 conditions per place. [2024-06-04 14:44:40,668 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 333 selfloop transitions, 16 changer transitions 0/386 dead transitions. [2024-06-04 14:44:40,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 386 transitions, 4810 flow [2024-06-04 14:44:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:44:40,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:44:40,669 INFO L175 Difference]: Start difference. First operand has 319 places, 360 transitions, 3982 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:44:40,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 386 transitions, 4810 flow [2024-06-04 14:44:43,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 386 transitions, 4721 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:43,214 INFO L231 Difference]: Finished difference. Result has 321 places, 362 transitions, 4004 flow [2024-06-04 14:44:43,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3893, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4004, PETRI_PLACES=321, PETRI_TRANSITIONS=362} [2024-06-04 14:44:43,215 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 276 predicate places. [2024-06-04 14:44:43,215 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 362 transitions, 4004 flow [2024-06-04 14:44:43,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:43,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:43,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:43,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:44:43,215 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)] === [2024-06-04 14:44:43,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2131339682, now seen corresponding path program 3 times [2024-06-04 14:44:43,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:43,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802431475] [2024-06-04 14:44:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802431475] [2024-06-04 14:44:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802431475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806379652] [2024-06-04 14:44:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:44,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:44,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:44,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:44,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 362 transitions, 4004 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:44,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:44,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:44,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:45,410 INFO L124 PetriNetUnfolderBase]: 3727/6121 cut-off events. [2024-06-04 14:44:45,410 INFO L125 PetriNetUnfolderBase]: For 1355286/1355289 co-relation queries the response was YES. [2024-06-04 14:44:45,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60229 conditions, 6121 events. 3727/6121 cut-off events. For 1355286/1355289 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39628 event pairs, 868 based on Foata normal form. 3/6048 useless extension candidates. Maximal degree in co-relation 60072. Up to 5552 conditions per place. [2024-06-04 14:44:45,499 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 322 selfloop transitions, 29 changer transitions 0/388 dead transitions. [2024-06-04 14:44:45,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 388 transitions, 4874 flow [2024-06-04 14:44:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 14:44:45,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-04 14:44:45,501 INFO L175 Difference]: Start difference. First operand has 321 places, 362 transitions, 4004 flow. Second operand 8 states and 159 transitions. [2024-06-04 14:44:45,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 388 transitions, 4874 flow [2024-06-04 14:44:47,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 388 transitions, 4775 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:47,659 INFO L231 Difference]: Finished difference. Result has 323 places, 365 transitions, 4085 flow [2024-06-04 14:44:47,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4085, PETRI_PLACES=323, PETRI_TRANSITIONS=365} [2024-06-04 14:44:47,659 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 278 predicate places. [2024-06-04 14:44:47,659 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 365 transitions, 4085 flow [2024-06-04 14:44:47,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:47,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:47,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:47,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:44:47,660 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)] === [2024-06-04 14:44:47,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2131160936, now seen corresponding path program 1 times [2024-06-04 14:44:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:47,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770382197] [2024-06-04 14:44:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:47,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770382197] [2024-06-04 14:44:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770382197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:48,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087573706] [2024-06-04 14:44:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:48,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:48,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 365 transitions, 4085 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:48,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:48,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:48,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:50,004 INFO L124 PetriNetUnfolderBase]: 3934/6390 cut-off events. [2024-06-04 14:44:50,004 INFO L125 PetriNetUnfolderBase]: For 1381443/1381446 co-relation queries the response was YES. [2024-06-04 14:44:50,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62032 conditions, 6390 events. 3934/6390 cut-off events. For 1381443/1381446 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 40625 event pairs, 921 based on Foata normal form. 1/6387 useless extension candidates. Maximal degree in co-relation 61874. Up to 6007 conditions per place. [2024-06-04 14:44:50,097 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 357 selfloop transitions, 29 changer transitions 0/391 dead transitions. [2024-06-04 14:44:50,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 391 transitions, 5009 flow [2024-06-04 14:44:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:44:50,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:44:50,099 INFO L175 Difference]: Start difference. First operand has 323 places, 365 transitions, 4085 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:44:50,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 391 transitions, 5009 flow [2024-06-04 14:44:52,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 391 transitions, 4851 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:52,437 INFO L231 Difference]: Finished difference. Result has 325 places, 368 transitions, 4091 flow [2024-06-04 14:44:52,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3927, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4091, PETRI_PLACES=325, PETRI_TRANSITIONS=368} [2024-06-04 14:44:52,438 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 280 predicate places. [2024-06-04 14:44:52,438 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 368 transitions, 4091 flow [2024-06-04 14:44:52,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:52,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:52,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:52,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:44:52,438 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)] === [2024-06-04 14:44:52,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:52,439 INFO L85 PathProgramCache]: Analyzing trace with hash 282526622, now seen corresponding path program 4 times [2024-06-04 14:44:52,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:52,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446168942] [2024-06-04 14:44:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:53,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:53,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446168942] [2024-06-04 14:44:53,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446168942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:53,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:53,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589884273] [2024-06-04 14:44:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:53,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:53,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:53,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:53,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:44:53,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 368 transitions, 4091 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:53,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:53,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:44:53,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:54,714 INFO L124 PetriNetUnfolderBase]: 3737/6137 cut-off events. [2024-06-04 14:44:54,715 INFO L125 PetriNetUnfolderBase]: For 1402214/1402217 co-relation queries the response was YES. [2024-06-04 14:44:54,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61337 conditions, 6137 events. 3737/6137 cut-off events. For 1402214/1402217 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39777 event pairs, 867 based on Foata normal form. 3/6064 useless extension candidates. Maximal degree in co-relation 61178. Up to 5555 conditions per place. [2024-06-04 14:44:54,805 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 316 selfloop transitions, 37 changer transitions 0/391 dead transitions. [2024-06-04 14:44:54,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 391 transitions, 4965 flow [2024-06-04 14:44:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:44:54,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:44:54,806 INFO L175 Difference]: Start difference. First operand has 325 places, 368 transitions, 4091 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:44:54,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 391 transitions, 4965 flow [2024-06-04 14:44:57,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 391 transitions, 4823 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:57,265 INFO L231 Difference]: Finished difference. Result has 327 places, 371 transitions, 4153 flow [2024-06-04 14:44:57,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4153, PETRI_PLACES=327, PETRI_TRANSITIONS=371} [2024-06-04 14:44:57,266 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 282 predicate places. [2024-06-04 14:44:57,266 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 371 transitions, 4153 flow [2024-06-04 14:44:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:57,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:57,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:57,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:44:57,267 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)] === [2024-06-04 14:44:57,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash -559919260, now seen corresponding path program 2 times [2024-06-04 14:44:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788872073] [2024-06-04 14:44:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:57,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:58,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788872073] [2024-06-04 14:44:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788872073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:58,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:58,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:44:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093289906] [2024-06-04 14:44:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:58,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:44:58,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:44:58,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:44:58,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:44:58,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 371 transitions, 4153 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:58,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:58,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:44:58,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:59,518 INFO L124 PetriNetUnfolderBase]: 3944/6406 cut-off events. [2024-06-04 14:44:59,518 INFO L125 PetriNetUnfolderBase]: For 1432496/1432499 co-relation queries the response was YES. [2024-06-04 14:44:59,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63186 conditions, 6406 events. 3944/6406 cut-off events. For 1432496/1432499 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 40758 event pairs, 921 based on Foata normal form. 1/6403 useless extension candidates. Maximal degree in co-relation 63026. Up to 6015 conditions per place. [2024-06-04 14:44:59,611 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 355 selfloop transitions, 34 changer transitions 0/394 dead transitions. [2024-06-04 14:44:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 394 transitions, 5083 flow [2024-06-04 14:44:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:44:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:44:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:44:59,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:44:59,613 INFO L175 Difference]: Start difference. First operand has 327 places, 371 transitions, 4153 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:44:59,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 394 transitions, 5083 flow [2024-06-04 14:45:02,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 394 transitions, 4901 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:02,109 INFO L231 Difference]: Finished difference. Result has 329 places, 374 transitions, 4153 flow [2024-06-04 14:45:02,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4153, PETRI_PLACES=329, PETRI_TRANSITIONS=374} [2024-06-04 14:45:02,109 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 284 predicate places. [2024-06-04 14:45:02,109 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 374 transitions, 4153 flow [2024-06-04 14:45:02,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:02,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:02,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:02,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:45:02,110 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)] === [2024-06-04 14:45:02,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash -559919012, now seen corresponding path program 1 times [2024-06-04 14:45:02,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:02,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182944397] [2024-06-04 14:45:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:02,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:03,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:03,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182944397] [2024-06-04 14:45:03,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182944397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:03,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:03,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136843778] [2024-06-04 14:45:03,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:03,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:03,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:03,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:03,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 374 transitions, 4153 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:03,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:03,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:03,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:04,558 INFO L124 PetriNetUnfolderBase]: 3747/6151 cut-off events. [2024-06-04 14:45:04,559 INFO L125 PetriNetUnfolderBase]: For 1452917/1452920 co-relation queries the response was YES. [2024-06-04 14:45:04,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62404 conditions, 6151 events. 3747/6151 cut-off events. For 1452917/1452920 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39830 event pairs, 866 based on Foata normal form. 3/6078 useless extension candidates. Maximal degree in co-relation 62243. Up to 5615 conditions per place. [2024-06-04 14:45:04,652 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 336 selfloop transitions, 22 changer transitions 0/397 dead transitions. [2024-06-04 14:45:04,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 397 transitions, 4991 flow [2024-06-04 14:45:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:45:04,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:45:04,654 INFO L175 Difference]: Start difference. First operand has 329 places, 374 transitions, 4153 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:45:04,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 397 transitions, 4991 flow [2024-06-04 14:45:07,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 397 transitions, 4831 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:07,116 INFO L231 Difference]: Finished difference. Result has 331 places, 377 transitions, 4121 flow [2024-06-04 14:45:07,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3993, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4121, PETRI_PLACES=331, PETRI_TRANSITIONS=377} [2024-06-04 14:45:07,116 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-06-04 14:45:07,116 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 377 transitions, 4121 flow [2024-06-04 14:45:07,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:07,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:07,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:07,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:45:07,117 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:07,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash -323446982, now seen corresponding path program 2 times [2024-06-04 14:45:07,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:07,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085979591] [2024-06-04 14:45:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:07,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:08,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085979591] [2024-06-04 14:45:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085979591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:08,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:08,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095791237] [2024-06-04 14:45:08,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:08,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:08,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:08,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:08,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 377 transitions, 4121 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:08,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:08,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:08,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:09,644 INFO L124 PetriNetUnfolderBase]: 3760/6169 cut-off events. [2024-06-04 14:45:09,645 INFO L125 PetriNetUnfolderBase]: For 1481915/1481918 co-relation queries the response was YES. [2024-06-04 14:45:09,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63128 conditions, 6169 events. 3760/6169 cut-off events. For 1481915/1481918 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39922 event pairs, 866 based on Foata normal form. 3/6096 useless extension candidates. Maximal degree in co-relation 62966. Up to 5612 conditions per place. [2024-06-04 14:45:09,728 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 327 selfloop transitions, 37 changer transitions 0/403 dead transitions. [2024-06-04 14:45:09,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 403 transitions, 5303 flow [2024-06-04 14:45:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:45:09,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:45:09,730 INFO L175 Difference]: Start difference. First operand has 331 places, 377 transitions, 4121 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:45:09,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 403 transitions, 5303 flow [2024-06-04 14:45:12,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 403 transitions, 5197 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:12,255 INFO L231 Difference]: Finished difference. Result has 334 places, 385 transitions, 4287 flow [2024-06-04 14:45:12,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4015, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4287, PETRI_PLACES=334, PETRI_TRANSITIONS=385} [2024-06-04 14:45:12,256 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 289 predicate places. [2024-06-04 14:45:12,256 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 385 transitions, 4287 flow [2024-06-04 14:45:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:12,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:12,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:12,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:45:12,257 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:12,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:12,257 INFO L85 PathProgramCache]: Analyzing trace with hash -323744086, now seen corresponding path program 5 times [2024-06-04 14:45:12,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:12,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385509175] [2024-06-04 14:45:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:12,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:13,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385509175] [2024-06-04 14:45:13,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385509175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:13,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:13,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:13,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473454153] [2024-06-04 14:45:13,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:13,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:13,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:13,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:13,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:13,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 385 transitions, 4287 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:13,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:13,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:13,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:14,596 INFO L124 PetriNetUnfolderBase]: 3781/6200 cut-off events. [2024-06-04 14:45:14,597 INFO L125 PetriNetUnfolderBase]: For 1525832/1525835 co-relation queries the response was YES. [2024-06-04 14:45:14,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64440 conditions, 6200 events. 3781/6200 cut-off events. For 1525832/1525835 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40168 event pairs, 866 based on Foata normal form. 3/6127 useless extension candidates. Maximal degree in co-relation 64276. Up to 5583 conditions per place. [2024-06-04 14:45:14,683 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 315 selfloop transitions, 59 changer transitions 0/413 dead transitions. [2024-06-04 14:45:14,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 413 transitions, 5955 flow [2024-06-04 14:45:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 14:45:14,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-04 14:45:14,685 INFO L175 Difference]: Start difference. First operand has 334 places, 385 transitions, 4287 flow. Second operand 8 states and 157 transitions. [2024-06-04 14:45:14,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 413 transitions, 5955 flow [2024-06-04 14:45:17,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 413 transitions, 5831 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-04 14:45:17,677 INFO L231 Difference]: Finished difference. Result has 338 places, 394 transitions, 4683 flow [2024-06-04 14:45:17,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4163, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4683, PETRI_PLACES=338, PETRI_TRANSITIONS=394} [2024-06-04 14:45:17,677 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 293 predicate places. [2024-06-04 14:45:17,677 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 394 transitions, 4683 flow [2024-06-04 14:45:17,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:17,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:17,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:17,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:45:17,679 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:17,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash -323864056, now seen corresponding path program 6 times [2024-06-04 14:45:17,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:17,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281149700] [2024-06-04 14:45:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:18,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:18,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281149700] [2024-06-04 14:45:18,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281149700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:18,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:18,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:18,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306263302] [2024-06-04 14:45:18,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:18,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:18,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 394 transitions, 4683 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:18,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:18,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:20,119 INFO L124 PetriNetUnfolderBase]: 3778/6195 cut-off events. [2024-06-04 14:45:20,119 INFO L125 PetriNetUnfolderBase]: For 1547432/1547432 co-relation queries the response was YES. [2024-06-04 14:45:20,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64870 conditions, 6195 events. 3778/6195 cut-off events. For 1547432/1547432 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40137 event pairs, 862 based on Foata normal form. 1/6121 useless extension candidates. Maximal degree in co-relation 64704. Up to 5664 conditions per place. [2024-06-04 14:45:20,205 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 350 selfloop transitions, 22 changer transitions 0/411 dead transitions. [2024-06-04 14:45:20,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 411 transitions, 5469 flow [2024-06-04 14:45:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:45:20,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:45:20,206 INFO L175 Difference]: Start difference. First operand has 338 places, 394 transitions, 4683 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:45:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 411 transitions, 5469 flow [2024-06-04 14:45:23,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 411 transitions, 5193 flow, removed 125 selfloop flow, removed 3 redundant places. [2024-06-04 14:45:23,366 INFO L231 Difference]: Finished difference. Result has 343 places, 394 transitions, 4457 flow [2024-06-04 14:45:23,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4407, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4457, PETRI_PLACES=343, PETRI_TRANSITIONS=394} [2024-06-04 14:45:23,366 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-04 14:45:23,366 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 394 transitions, 4457 flow [2024-06-04 14:45:23,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:23,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:23,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:23,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:45:23,367 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:23,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1894806086, now seen corresponding path program 3 times [2024-06-04 14:45:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666913472] [2024-06-04 14:45:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:24,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666913472] [2024-06-04 14:45:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666913472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:24,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:24,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731414864] [2024-06-04 14:45:24,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:24,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:24,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:24,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 394 transitions, 4457 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:24,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:24,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:24,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:25,763 INFO L124 PetriNetUnfolderBase]: 3993/6476 cut-off events. [2024-06-04 14:45:25,764 INFO L125 PetriNetUnfolderBase]: For 1580458/1580461 co-relation queries the response was YES. [2024-06-04 14:45:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66544 conditions, 6476 events. 3993/6476 cut-off events. For 1580458/1580461 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 41256 event pairs, 920 based on Foata normal form. 1/6473 useless extension candidates. Maximal degree in co-relation 66376. Up to 6063 conditions per place. [2024-06-04 14:45:25,863 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 367 selfloop transitions, 46 changer transitions 0/418 dead transitions. [2024-06-04 14:45:25,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 418 transitions, 5801 flow [2024-06-04 14:45:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:45:25,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:45:25,864 INFO L175 Difference]: Start difference. First operand has 343 places, 394 transitions, 4457 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:45:25,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 418 transitions, 5801 flow [2024-06-04 14:45:29,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 418 transitions, 5705 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:29,193 INFO L231 Difference]: Finished difference. Result has 343 places, 400 transitions, 4693 flow [2024-06-04 14:45:29,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4693, PETRI_PLACES=343, PETRI_TRANSITIONS=400} [2024-06-04 14:45:29,194 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-04 14:45:29,194 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 400 transitions, 4693 flow [2024-06-04 14:45:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:29,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:29,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:45:29,195 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:45:29,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -323743652, now seen corresponding path program 3 times [2024-06-04 14:45:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044998460] [2024-06-04 14:45:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:30,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:30,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044998460] [2024-06-04 14:45:30,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044998460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:30,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:30,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:30,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725571987] [2024-06-04 14:45:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:30,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:30,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:30,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 400 transitions, 4693 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:30,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:30,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:30,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:31,834 INFO L124 PetriNetUnfolderBase]: 3796/6221 cut-off events. [2024-06-04 14:45:31,835 INFO L125 PetriNetUnfolderBase]: For 1605724/1605727 co-relation queries the response was YES. [2024-06-04 14:45:31,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65864 conditions, 6221 events. 3796/6221 cut-off events. For 1605724/1605727 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40319 event pairs, 866 based on Foata normal form. 3/6148 useless extension candidates. Maximal degree in co-relation 65697. Up to 5669 conditions per place. [2024-06-04 14:45:31,934 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 349 selfloop transitions, 30 changer transitions 0/420 dead transitions. [2024-06-04 14:45:31,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 420 transitions, 5560 flow [2024-06-04 14:45:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:45:31,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:45:31,935 INFO L175 Difference]: Start difference. First operand has 343 places, 400 transitions, 4693 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:45:31,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 420 transitions, 5560 flow [2024-06-04 14:45:34,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 420 transitions, 5400 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-04 14:45:34,818 INFO L231 Difference]: Finished difference. Result has 347 places, 403 transitions, 4672 flow [2024-06-04 14:45:34,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4672, PETRI_PLACES=347, PETRI_TRANSITIONS=403} [2024-06-04 14:45:34,818 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 302 predicate places. [2024-06-04 14:45:34,819 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 403 transitions, 4672 flow [2024-06-04 14:45:34,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:34,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:34,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:34,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:45:34,819 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)] === [2024-06-04 14:45:34,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash 188945552, now seen corresponding path program 1 times [2024-06-04 14:45:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477580426] [2024-06-04 14:45:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:35,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477580426] [2024-06-04 14:45:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477580426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:35,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:45:35,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956822422] [2024-06-04 14:45:35,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:45:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:45:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:45:36,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:45:36,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 403 transitions, 4672 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:45:36,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:36,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:45:36,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:37,927 INFO L124 PetriNetUnfolderBase]: 4203/6858 cut-off events. [2024-06-04 14:45:37,928 INFO L125 PetriNetUnfolderBase]: For 1697370/1697373 co-relation queries the response was YES. [2024-06-04 14:45:38,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69555 conditions, 6858 events. 4203/6858 cut-off events. For 1697370/1697373 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 44566 event pairs, 886 based on Foata normal form. 12/6866 useless extension candidates. Maximal degree in co-relation 69386. Up to 5599 conditions per place. [2024-06-04 14:45:38,037 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 349 selfloop transitions, 109 changer transitions 0/463 dead transitions. [2024-06-04 14:45:38,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 463 transitions, 6030 flow [2024-06-04 14:45:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-04 14:45:38,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 14:45:38,038 INFO L175 Difference]: Start difference. First operand has 347 places, 403 transitions, 4672 flow. Second operand 11 states and 220 transitions. [2024-06-04 14:45:38,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 463 transitions, 6030 flow [2024-06-04 14:45:41,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 463 transitions, 5922 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:41,130 INFO L231 Difference]: Finished difference. Result has 354 places, 417 transitions, 5062 flow [2024-06-04 14:45:41,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4564, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5062, PETRI_PLACES=354, PETRI_TRANSITIONS=417} [2024-06-04 14:45:41,131 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 309 predicate places. [2024-06-04 14:45:41,131 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 417 transitions, 5062 flow [2024-06-04 14:45:41,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:45:41,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:41,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:41,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:45:41,131 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)] === [2024-06-04 14:45:41,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1894929218, now seen corresponding path program 3 times [2024-06-04 14:45:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:41,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397940588] [2024-06-04 14:45:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397940588] [2024-06-04 14:45:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397940588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:42,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:42,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:42,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857628648] [2024-06-04 14:45:42,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:42,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:42,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:42,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 417 transitions, 5062 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:42,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:42,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:42,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:43,796 INFO L124 PetriNetUnfolderBase]: 4009/6637 cut-off events. [2024-06-04 14:45:43,797 INFO L125 PetriNetUnfolderBase]: For 1678776/1678776 co-relation queries the response was YES. [2024-06-04 14:45:43,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69644 conditions, 6637 events. 4009/6637 cut-off events. For 1678776/1678776 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44099 event pairs, 899 based on Foata normal form. 2/6564 useless extension candidates. Maximal degree in co-relation 69472. Up to 6048 conditions per place. [2024-06-04 14:45:43,895 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 375 selfloop transitions, 21 changer transitions 0/437 dead transitions. [2024-06-04 14:45:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 437 transitions, 5984 flow [2024-06-04 14:45:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:45:43,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:45:43,897 INFO L175 Difference]: Start difference. First operand has 354 places, 417 transitions, 5062 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:45:43,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 437 transitions, 5984 flow [2024-06-04 14:45:47,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 437 transitions, 5756 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:47,219 INFO L231 Difference]: Finished difference. Result has 356 places, 419 transitions, 4971 flow [2024-06-04 14:45:47,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4971, PETRI_PLACES=356, PETRI_TRANSITIONS=419} [2024-06-04 14:45:47,219 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 311 predicate places. [2024-06-04 14:45:47,219 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 419 transitions, 4971 flow [2024-06-04 14:45:47,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:47,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:47,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:47,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:45:47,220 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)] === [2024-06-04 14:45:47,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:47,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1649253454, now seen corresponding path program 1 times [2024-06-04 14:45:47,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:47,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498282550] [2024-06-04 14:45:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:47,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498282550] [2024-06-04 14:45:48,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498282550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:48,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:48,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:45:48,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131759180] [2024-06-04 14:45:48,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:48,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:45:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:45:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:45:48,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-04 14:45:48,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 419 transitions, 4971 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:48,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:48,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-04 14:45:48,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:50,450 INFO L124 PetriNetUnfolderBase]: 3818/6410 cut-off events. [2024-06-04 14:45:50,451 INFO L125 PetriNetUnfolderBase]: For 1676494/1676498 co-relation queries the response was YES. [2024-06-04 14:45:50,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67219 conditions, 6410 events. 3818/6410 cut-off events. For 1676494/1676498 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 43321 event pairs, 871 based on Foata normal form. 2/6321 useless extension candidates. Maximal degree in co-relation 67046. Up to 5632 conditions per place. [2024-06-04 14:45:50,551 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 329 selfloop transitions, 29 changer transitions 0/437 dead transitions. [2024-06-04 14:45:50,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 437 transitions, 5731 flow [2024-06-04 14:45:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:45:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:45:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:45:50,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:45:50,552 INFO L175 Difference]: Start difference. First operand has 356 places, 419 transitions, 4971 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:45:50,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 437 transitions, 5731 flow [2024-06-04 14:45:53,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 437 transitions, 5582 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-04 14:45:53,981 INFO L231 Difference]: Finished difference. Result has 359 places, 419 transitions, 4886 flow [2024-06-04 14:45:53,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4822, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4886, PETRI_PLACES=359, PETRI_TRANSITIONS=419} [2024-06-04 14:45:53,982 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 314 predicate places. [2024-06-04 14:45:53,983 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 419 transitions, 4886 flow [2024-06-04 14:45:53,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:53,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:53,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:45:53,986 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)] === [2024-06-04 14:45:53,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash -199571528, now seen corresponding path program 7 times [2024-06-04 14:45:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:53,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202538198] [2024-06-04 14:45:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:53,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:54,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:54,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202538198] [2024-06-04 14:45:54,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202538198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:54,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:54,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:45:54,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217693050] [2024-06-04 14:45:54,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:54,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:45:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:45:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:45:54,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:45:54,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 419 transitions, 4886 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:54,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:54,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:45:54,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:56,559 INFO L124 PetriNetUnfolderBase]: 4008/6627 cut-off events. [2024-06-04 14:45:56,559 INFO L125 PetriNetUnfolderBase]: For 1694946/1694949 co-relation queries the response was YES. [2024-06-04 14:45:56,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69094 conditions, 6627 events. 4008/6627 cut-off events. For 1694946/1694949 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43932 event pairs, 901 based on Foata normal form. 1/6549 useless extension candidates. Maximal degree in co-relation 68920. Up to 6005 conditions per place. [2024-06-04 14:45:56,648 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 372 selfloop transitions, 29 changer transitions 0/442 dead transitions. [2024-06-04 14:45:56,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 442 transitions, 5860 flow [2024-06-04 14:45:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:45:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:45:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 14:45:56,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-04 14:45:56,650 INFO L175 Difference]: Start difference. First operand has 359 places, 419 transitions, 4886 flow. Second operand 8 states and 156 transitions. [2024-06-04 14:45:56,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 442 transitions, 5860 flow [2024-06-04 14:45:59,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 442 transitions, 5758 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:59,516 INFO L231 Difference]: Finished difference. Result has 359 places, 422 transitions, 4976 flow [2024-06-04 14:45:59,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4976, PETRI_PLACES=359, PETRI_TRANSITIONS=422} [2024-06-04 14:45:59,517 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 314 predicate places. [2024-06-04 14:45:59,517 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 422 transitions, 4976 flow [2024-06-04 14:45:59,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:59,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:59,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:45:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:45:59,518 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)] === [2024-06-04 14:45:59,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash -394459616, now seen corresponding path program 4 times [2024-06-04 14:45:59,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:59,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712864293] [2024-06-04 14:45:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:59,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:00,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712864293] [2024-06-04 14:46:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712864293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:00,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:00,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:00,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059098559] [2024-06-04 14:46:00,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:00,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:00,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:00,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:00,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 422 transitions, 4976 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:00,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:00,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:00,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:02,047 INFO L124 PetriNetUnfolderBase]: 4215/6899 cut-off events. [2024-06-04 14:46:02,048 INFO L125 PetriNetUnfolderBase]: For 1723830/1723836 co-relation queries the response was YES. [2024-06-04 14:46:02,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70664 conditions, 6899 events. 4215/6899 cut-off events. For 1723830/1723836 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 45045 event pairs, 944 based on Foata normal form. 5/6899 useless extension candidates. Maximal degree in co-relation 70489. Up to 6469 conditions per place. [2024-06-04 14:46:02,148 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 411 selfloop transitions, 29 changer transitions 0/445 dead transitions. [2024-06-04 14:46:02,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 445 transitions, 6006 flow [2024-06-04 14:46:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:46:02,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:46:02,149 INFO L175 Difference]: Start difference. First operand has 359 places, 422 transitions, 4976 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:46:02,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 445 transitions, 6006 flow [2024-06-04 14:46:06,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 445 transitions, 5842 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-04 14:46:06,143 INFO L231 Difference]: Finished difference. Result has 361 places, 425 transitions, 4982 flow [2024-06-04 14:46:06,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4812, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4982, PETRI_PLACES=361, PETRI_TRANSITIONS=425} [2024-06-04 14:46:06,143 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 316 predicate places. [2024-06-04 14:46:06,144 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 425 transitions, 4982 flow [2024-06-04 14:46:06,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:06,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:06,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:06,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:46:06,144 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)] === [2024-06-04 14:46:06,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:06,144 INFO L85 PathProgramCache]: Analyzing trace with hash 816406390, now seen corresponding path program 5 times [2024-06-04 14:46:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471357262] [2024-06-04 14:46:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:06,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:06,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471357262] [2024-06-04 14:46:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471357262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308604870] [2024-06-04 14:46:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:06,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:06,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:06,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:07,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:07,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 425 transitions, 4982 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:07,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:07,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:07,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:08,673 INFO L124 PetriNetUnfolderBase]: 4220/6906 cut-off events. [2024-06-04 14:46:08,674 INFO L125 PetriNetUnfolderBase]: For 1748642/1748648 co-relation queries the response was YES. [2024-06-04 14:46:08,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70884 conditions, 6906 events. 4220/6906 cut-off events. For 1748642/1748648 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 45093 event pairs, 944 based on Foata normal form. 5/6906 useless extension candidates. Maximal degree in co-relation 70708. Up to 6476 conditions per place. [2024-06-04 14:46:08,779 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 413 selfloop transitions, 30 changer transitions 0/448 dead transitions. [2024-06-04 14:46:08,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 448 transitions, 6024 flow [2024-06-04 14:46:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:46:08,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:46:08,780 INFO L175 Difference]: Start difference. First operand has 361 places, 425 transitions, 4982 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:46:08,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 448 transitions, 6024 flow [2024-06-04 14:46:12,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 448 transitions, 5882 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-04 14:46:12,757 INFO L231 Difference]: Finished difference. Result has 363 places, 428 transitions, 5018 flow [2024-06-04 14:46:12,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4840, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5018, PETRI_PLACES=363, PETRI_TRANSITIONS=428} [2024-06-04 14:46:12,757 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 318 predicate places. [2024-06-04 14:46:12,758 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 428 transitions, 5018 flow [2024-06-04 14:46:12,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:12,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:12,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:12,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:46:12,758 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)] === [2024-06-04 14:46:12,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash 816794200, now seen corresponding path program 6 times [2024-06-04 14:46:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:12,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912492154] [2024-06-04 14:46:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:12,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912492154] [2024-06-04 14:46:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912492154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:13,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:13,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:13,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247417374] [2024-06-04 14:46:13,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:13,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:13,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:13,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:13,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 428 transitions, 5018 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:13,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:13,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:13,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:15,416 INFO L124 PetriNetUnfolderBase]: 4225/6913 cut-off events. [2024-06-04 14:46:15,416 INFO L125 PetriNetUnfolderBase]: For 1774279/1774285 co-relation queries the response was YES. [2024-06-04 14:46:15,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71147 conditions, 6913 events. 4225/6913 cut-off events. For 1774279/1774285 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 45076 event pairs, 944 based on Foata normal form. 5/6913 useless extension candidates. Maximal degree in co-relation 70970. Up to 6471 conditions per place. [2024-06-04 14:46:15,528 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 402 selfloop transitions, 41 changer transitions 0/448 dead transitions. [2024-06-04 14:46:15,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 448 transitions, 6068 flow [2024-06-04 14:46:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 14:46:15,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:46:15,529 INFO L175 Difference]: Start difference. First operand has 363 places, 428 transitions, 5018 flow. Second operand 8 states and 146 transitions. [2024-06-04 14:46:15,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 448 transitions, 6068 flow [2024-06-04 14:46:19,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 448 transitions, 5918 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-04 14:46:19,334 INFO L231 Difference]: Finished difference. Result has 365 places, 431 transitions, 5084 flow [2024-06-04 14:46:19,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5084, PETRI_PLACES=365, PETRI_TRANSITIONS=431} [2024-06-04 14:46:19,335 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 320 predicate places. [2024-06-04 14:46:19,335 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 431 transitions, 5084 flow [2024-06-04 14:46:19,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:19,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:19,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:19,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:46:19,335 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)] === [2024-06-04 14:46:19,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash -394280126, now seen corresponding path program 7 times [2024-06-04 14:46:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:19,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280495494] [2024-06-04 14:46:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:20,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280495494] [2024-06-04 14:46:20,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280495494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:20,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:20,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203462856] [2024-06-04 14:46:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:20,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:20,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:20,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:20,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:20,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:20,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 431 transitions, 5084 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:20,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:20,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:20,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:21,984 INFO L124 PetriNetUnfolderBase]: 4222/6909 cut-off events. [2024-06-04 14:46:21,984 INFO L125 PetriNetUnfolderBase]: For 1791293/1791299 co-relation queries the response was YES. [2024-06-04 14:46:22,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71379 conditions, 6909 events. 4222/6909 cut-off events. For 1791293/1791299 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 45102 event pairs, 944 based on Foata normal form. 5/6909 useless extension candidates. Maximal degree in co-relation 71201. Up to 6470 conditions per place. [2024-06-04 14:46:22,086 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 406 selfloop transitions, 37 changer transitions 0/448 dead transitions. [2024-06-04 14:46:22,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 448 transitions, 6012 flow [2024-06-04 14:46:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 14:46:22,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:46:22,088 INFO L175 Difference]: Start difference. First operand has 365 places, 431 transitions, 5084 flow. Second operand 8 states and 147 transitions. [2024-06-04 14:46:22,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 448 transitions, 6012 flow [2024-06-04 14:46:25,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 448 transitions, 5756 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-06-04 14:46:25,916 INFO L231 Difference]: Finished difference. Result has 367 places, 431 transitions, 4908 flow [2024-06-04 14:46:25,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4828, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4908, PETRI_PLACES=367, PETRI_TRANSITIONS=431} [2024-06-04 14:46:25,916 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 322 predicate places. [2024-06-04 14:46:25,917 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 431 transitions, 4908 flow [2024-06-04 14:46:25,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:25,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:25,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:25,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:46:25,917 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)] === [2024-06-04 14:46:25,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash -394279878, now seen corresponding path program 4 times [2024-06-04 14:46:25,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:25,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261981527] [2024-06-04 14:46:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:25,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:26,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:26,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261981527] [2024-06-04 14:46:26,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261981527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:26,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:26,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:26,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747086190] [2024-06-04 14:46:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:26,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:26,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:26,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:46:26,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 431 transitions, 4908 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:26,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:26,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:46:26,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:28,558 INFO L124 PetriNetUnfolderBase]: 4017/6643 cut-off events. [2024-06-04 14:46:28,558 INFO L125 PetriNetUnfolderBase]: For 1802711/1802717 co-relation queries the response was YES. [2024-06-04 14:46:28,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69918 conditions, 6643 events. 4017/6643 cut-off events. For 1802711/1802717 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 44068 event pairs, 894 based on Foata normal form. 5/6571 useless extension candidates. Maximal degree in co-relation 69739. Up to 6052 conditions per place. [2024-06-04 14:46:28,664 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 383 selfloop transitions, 22 changer transitions 0/449 dead transitions. [2024-06-04 14:46:28,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 449 transitions, 5783 flow [2024-06-04 14:46:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:46:28,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:46:28,668 INFO L175 Difference]: Start difference. First operand has 367 places, 431 transitions, 4908 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:46:28,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 449 transitions, 5783 flow [2024-06-04 14:46:31,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 449 transitions, 5591 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-04 14:46:31,819 INFO L231 Difference]: Finished difference. Result has 368 places, 432 transitions, 4791 flow [2024-06-04 14:46:31,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4791, PETRI_PLACES=368, PETRI_TRANSITIONS=432} [2024-06-04 14:46:31,820 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 323 predicate places. [2024-06-04 14:46:31,820 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 432 transitions, 4791 flow [2024-06-04 14:46:31,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:31,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:31,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:31,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:46:31,821 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)] === [2024-06-04 14:46:31,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:31,821 INFO L85 PathProgramCache]: Analyzing trace with hash -199213478, now seen corresponding path program 8 times [2024-06-04 14:46:31,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473390737] [2024-06-04 14:46:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:31,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:32,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:32,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473390737] [2024-06-04 14:46:32,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473390737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:32,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:32,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94679919] [2024-06-04 14:46:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:32,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:32,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:32,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:32,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:32,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:46:32,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 432 transitions, 4791 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:32,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:32,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:46:32,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:34,308 INFO L124 PetriNetUnfolderBase]: 4014/6636 cut-off events. [2024-06-04 14:46:34,308 INFO L125 PetriNetUnfolderBase]: For 1818648/1818651 co-relation queries the response was YES. [2024-06-04 14:46:34,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69768 conditions, 6636 events. 4014/6636 cut-off events. For 1818648/1818651 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 43991 event pairs, 901 based on Foata normal form. 1/6558 useless extension candidates. Maximal degree in co-relation 69588. Up to 6003 conditions per place. [2024-06-04 14:46:34,414 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 371 selfloop transitions, 34 changer transitions 0/449 dead transitions. [2024-06-04 14:46:34,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 449 transitions, 5643 flow [2024-06-04 14:46:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 14:46:34,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-04 14:46:34,415 INFO L175 Difference]: Start difference. First operand has 368 places, 432 transitions, 4791 flow. Second operand 8 states and 155 transitions. [2024-06-04 14:46:34,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 449 transitions, 5643 flow [2024-06-04 14:46:38,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 449 transitions, 5511 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-04 14:46:38,253 INFO L231 Difference]: Finished difference. Result has 370 places, 432 transitions, 4733 flow [2024-06-04 14:46:38,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4659, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4733, PETRI_PLACES=370, PETRI_TRANSITIONS=432} [2024-06-04 14:46:38,253 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 325 predicate places. [2024-06-04 14:46:38,254 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 432 transitions, 4733 flow [2024-06-04 14:46:38,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:38,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:38,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:38,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:46:38,254 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)] === [2024-06-04 14:46:38,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1115225000, now seen corresponding path program 8 times [2024-06-04 14:46:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:38,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324819714] [2024-06-04 14:46:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:39,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:39,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324819714] [2024-06-04 14:46:39,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324819714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:39,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:39,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:39,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306729063] [2024-06-04 14:46:39,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:39,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:39,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:39,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:39,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:39,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 432 transitions, 4733 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:39,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:39,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:39,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:40,741 INFO L124 PetriNetUnfolderBase]: 4229/6919 cut-off events. [2024-06-04 14:46:40,741 INFO L125 PetriNetUnfolderBase]: For 1858185/1858191 co-relation queries the response was YES. [2024-06-04 14:46:40,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71700 conditions, 6919 events. 4229/6919 cut-off events. For 1858185/1858191 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 45148 event pairs, 944 based on Foata normal form. 5/6919 useless extension candidates. Maximal degree in co-relation 71519. Up to 6449 conditions per place. [2024-06-04 14:46:40,854 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 386 selfloop transitions, 62 changer transitions 0/453 dead transitions. [2024-06-04 14:46:40,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 453 transitions, 6191 flow [2024-06-04 14:46:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 14:46:40,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:46:40,855 INFO L175 Difference]: Start difference. First operand has 370 places, 432 transitions, 4733 flow. Second operand 8 states and 146 transitions. [2024-06-04 14:46:40,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 453 transitions, 6191 flow [2024-06-04 14:46:44,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 453 transitions, 6053 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 14:46:44,693 INFO L231 Difference]: Finished difference. Result has 371 places, 438 transitions, 4987 flow [2024-06-04 14:46:44,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4595, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4987, PETRI_PLACES=371, PETRI_TRANSITIONS=438} [2024-06-04 14:46:44,693 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 326 predicate places. [2024-06-04 14:46:44,693 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 438 transitions, 4987 flow [2024-06-04 14:46:44,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:44,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:44,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:44,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:46:44,694 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)] === [2024-06-04 14:46:44,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash 214093402, now seen corresponding path program 9 times [2024-06-04 14:46:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412790258] [2024-06-04 14:46:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:45,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:45,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412790258] [2024-06-04 14:46:45,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412790258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:45,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:45,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:45,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930067773] [2024-06-04 14:46:45,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:45,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:45,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:45,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:46:45,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 438 transitions, 4987 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:45,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:45,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:46:45,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:47,497 INFO L124 PetriNetUnfolderBase]: 4032/6661 cut-off events. [2024-06-04 14:46:47,497 INFO L125 PetriNetUnfolderBase]: For 1886124/1886127 co-relation queries the response was YES. [2024-06-04 14:46:47,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71016 conditions, 6661 events. 4032/6661 cut-off events. For 1886124/1886127 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 44117 event pairs, 901 based on Foata normal form. 1/6583 useless extension candidates. Maximal degree in co-relation 70834. Up to 6002 conditions per place. [2024-06-04 14:46:47,607 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 357 selfloop transitions, 52 changer transitions 0/455 dead transitions. [2024-06-04 14:46:47,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 455 transitions, 5983 flow [2024-06-04 14:46:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:46:47,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:46:47,609 INFO L175 Difference]: Start difference. First operand has 371 places, 438 transitions, 4987 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:46:47,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 455 transitions, 5983 flow [2024-06-04 14:46:51,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 455 transitions, 5771 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-04 14:46:51,404 INFO L231 Difference]: Finished difference. Result has 375 places, 441 transitions, 5035 flow [2024-06-04 14:46:51,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4775, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5035, PETRI_PLACES=375, PETRI_TRANSITIONS=441} [2024-06-04 14:46:51,404 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 330 predicate places. [2024-06-04 14:46:51,405 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 441 transitions, 5035 flow [2024-06-04 14:46:51,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:51,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:51,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:51,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:46:51,405 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)] === [2024-06-04 14:46:51,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash 214330738, now seen corresponding path program 9 times [2024-06-04 14:46:51,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:51,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885673149] [2024-06-04 14:46:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:51,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:52,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885673149] [2024-06-04 14:46:52,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885673149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:52,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:52,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804985857] [2024-06-04 14:46:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:52,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:46:52,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 441 transitions, 5035 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:52,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:52,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:46:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:54,125 INFO L124 PetriNetUnfolderBase]: 4231/6922 cut-off events. [2024-06-04 14:46:54,126 INFO L125 PetriNetUnfolderBase]: For 1908653/1908659 co-relation queries the response was YES. [2024-06-04 14:46:54,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72707 conditions, 6922 events. 4231/6922 cut-off events. For 1908653/1908659 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 45212 event pairs, 944 based on Foata normal form. 5/6922 useless extension candidates. Maximal degree in co-relation 72523. Up to 6453 conditions per place. [2024-06-04 14:46:54,233 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 387 selfloop transitions, 63 changer transitions 0/455 dead transitions. [2024-06-04 14:46:54,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 455 transitions, 5969 flow [2024-06-04 14:46:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:46:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:46:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-04 14:46:54,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 14:46:54,234 INFO L175 Difference]: Start difference. First operand has 375 places, 441 transitions, 5035 flow. Second operand 8 states and 145 transitions. [2024-06-04 14:46:54,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 455 transitions, 5969 flow [2024-06-04 14:46:58,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 455 transitions, 5653 flow, removed 108 selfloop flow, removed 6 redundant places. [2024-06-04 14:46:58,575 INFO L231 Difference]: Finished difference. Result has 377 places, 441 transitions, 4851 flow [2024-06-04 14:46:58,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4719, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4851, PETRI_PLACES=377, PETRI_TRANSITIONS=441} [2024-06-04 14:46:58,576 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 332 predicate places. [2024-06-04 14:46:58,576 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 441 transitions, 4851 flow [2024-06-04 14:46:58,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:58,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:58,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:46:58,576 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)] === [2024-06-04 14:46:58,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1002467088, now seen corresponding path program 5 times [2024-06-04 14:46:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:58,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269367793] [2024-06-04 14:46:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:59,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:59,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269367793] [2024-06-04 14:46:59,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269367793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:59,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:59,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:46:59,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269045055] [2024-06-04 14:46:59,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:59,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:46:59,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:46:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:46:59,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:46:59,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 441 transitions, 4851 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:59,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:59,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:46:59,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:01,335 INFO L124 PetriNetUnfolderBase]: 4040/6676 cut-off events. [2024-06-04 14:47:01,336 INFO L125 PetriNetUnfolderBase]: For 1939840/1939846 co-relation queries the response was YES. [2024-06-04 14:47:01,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71771 conditions, 6676 events. 4040/6676 cut-off events. For 1939840/1939846 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 44308 event pairs, 892 based on Foata normal form. 5/6604 useless extension candidates. Maximal degree in co-relation 71586. Up to 6061 conditions per place. [2024-06-04 14:47:01,447 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 378 selfloop transitions, 40 changer transitions 0/464 dead transitions. [2024-06-04 14:47:01,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 464 transitions, 6206 flow [2024-06-04 14:47:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:47:01,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:47:01,449 INFO L175 Difference]: Start difference. First operand has 377 places, 441 transitions, 4851 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:47:01,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 464 transitions, 6206 flow [2024-06-04 14:47:05,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 464 transitions, 6058 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:47:05,386 INFO L231 Difference]: Finished difference. Result has 379 places, 449 transitions, 5021 flow [2024-06-04 14:47:05,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4703, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5021, PETRI_PLACES=379, PETRI_TRANSITIONS=449} [2024-06-04 14:47:05,386 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 334 predicate places. [2024-06-04 14:47:05,386 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 449 transitions, 5021 flow [2024-06-04 14:47:05,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:05,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:05,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:47:05,387 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)] === [2024-06-04 14:47:05,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:05,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1001991858, now seen corresponding path program 6 times [2024-06-04 14:47:05,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:05,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525496021] [2024-06-04 14:47:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:06,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:06,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525496021] [2024-06-04 14:47:06,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525496021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:06,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991522354] [2024-06-04 14:47:06,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:06,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:06,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 449 transitions, 5021 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:06,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:06,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:06,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:08,073 INFO L124 PetriNetUnfolderBase]: 4035/6674 cut-off events. [2024-06-04 14:47:08,073 INFO L125 PetriNetUnfolderBase]: For 1959895/1959901 co-relation queries the response was YES. [2024-06-04 14:47:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72044 conditions, 6674 events. 4035/6674 cut-off events. For 1959895/1959901 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44337 event pairs, 892 based on Foata normal form. 5/6602 useless extension candidates. Maximal degree in co-relation 71857. Up to 6070 conditions per place. [2024-06-04 14:47:08,186 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 388 selfloop transitions, 30 changer transitions 0/464 dead transitions. [2024-06-04 14:47:08,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 464 transitions, 5906 flow [2024-06-04 14:47:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 14:47:08,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-04 14:47:08,187 INFO L175 Difference]: Start difference. First operand has 379 places, 449 transitions, 5021 flow. Second operand 8 states and 149 transitions. [2024-06-04 14:47:08,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 464 transitions, 5906 flow [2024-06-04 14:47:12,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 464 transitions, 5708 flow, removed 83 selfloop flow, removed 4 redundant places. [2024-06-04 14:47:12,353 INFO L231 Difference]: Finished difference. Result has 383 places, 450 transitions, 4906 flow [2024-06-04 14:47:12,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4829, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4906, PETRI_PLACES=383, PETRI_TRANSITIONS=450} [2024-06-04 14:47:12,353 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 338 predicate places. [2024-06-04 14:47:12,353 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 450 transitions, 4906 flow [2024-06-04 14:47:12,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:12,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:12,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:12,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:47:12,354 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)] === [2024-06-04 14:47:12,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1976864440, now seen corresponding path program 7 times [2024-06-04 14:47:12,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:12,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105890486] [2024-06-04 14:47:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:12,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:13,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:13,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105890486] [2024-06-04 14:47:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105890486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123579422] [2024-06-04 14:47:13,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:13,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:13,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 450 transitions, 4906 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:13,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:13,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:13,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:15,002 INFO L124 PetriNetUnfolderBase]: 4050/6696 cut-off events. [2024-06-04 14:47:15,002 INFO L125 PetriNetUnfolderBase]: For 1996432/1996441 co-relation queries the response was YES. [2024-06-04 14:47:15,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72573 conditions, 6696 events. 4050/6696 cut-off events. For 1996432/1996441 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44526 event pairs, 896 based on Foata normal form. 7/6624 useless extension candidates. Maximal degree in co-relation 72384. Up to 6014 conditions per place. [2024-06-04 14:47:15,111 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 353 selfloop transitions, 81 changer transitions 0/480 dead transitions. [2024-06-04 14:47:15,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 480 transitions, 6728 flow [2024-06-04 14:47:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:47:15,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:47:15,112 INFO L175 Difference]: Start difference. First operand has 383 places, 450 transitions, 4906 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:47:15,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 480 transitions, 6728 flow [2024-06-04 14:47:20,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 480 transitions, 6656 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:47:20,033 INFO L231 Difference]: Finished difference. Result has 387 places, 466 transitions, 5433 flow [2024-06-04 14:47:20,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5433, PETRI_PLACES=387, PETRI_TRANSITIONS=466} [2024-06-04 14:47:20,033 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 342 predicate places. [2024-06-04 14:47:20,033 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 466 transitions, 5433 flow [2024-06-04 14:47:20,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:20,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:20,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:20,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:47:20,034 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:47:20,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash 618821230, now seen corresponding path program 8 times [2024-06-04 14:47:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:20,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112783825] [2024-06-04 14:47:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:20,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:21,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:21,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112783825] [2024-06-04 14:47:21,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112783825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:21,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:21,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:21,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469881105] [2024-06-04 14:47:21,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:21,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:21,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:21,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:21,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:21,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 466 transitions, 5433 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:21,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:21,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:21,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:23,146 INFO L124 PetriNetUnfolderBase]: 4061/6710 cut-off events. [2024-06-04 14:47:23,146 INFO L125 PetriNetUnfolderBase]: For 2038754/2038763 co-relation queries the response was YES. [2024-06-04 14:47:23,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73707 conditions, 6710 events. 4061/6710 cut-off events. For 2038754/2038763 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 44575 event pairs, 894 based on Foata normal form. 7/6638 useless extension candidates. Maximal degree in co-relation 73515. Up to 6029 conditions per place. [2024-06-04 14:47:23,247 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 353 selfloop transitions, 87 changer transitions 0/486 dead transitions. [2024-06-04 14:47:23,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 486 transitions, 7131 flow [2024-06-04 14:47:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 14:47:23,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:47:23,248 INFO L175 Difference]: Start difference. First operand has 387 places, 466 transitions, 5433 flow. Second operand 8 states and 152 transitions. [2024-06-04 14:47:23,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 486 transitions, 7131 flow [2024-06-04 14:47:27,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 486 transitions, 6867 flow, removed 109 selfloop flow, removed 3 redundant places. [2024-06-04 14:47:27,327 INFO L231 Difference]: Finished difference. Result has 393 places, 473 transitions, 5619 flow [2024-06-04 14:47:27,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5225, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5619, PETRI_PLACES=393, PETRI_TRANSITIONS=473} [2024-06-04 14:47:27,329 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 348 predicate places. [2024-06-04 14:47:27,329 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 473 transitions, 5619 flow [2024-06-04 14:47:27,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:27,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:27,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:27,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:47:27,330 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:47:27,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2146464200, now seen corresponding path program 9 times [2024-06-04 14:47:27,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:27,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866447873] [2024-06-04 14:47:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:27,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:28,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866447873] [2024-06-04 14:47:28,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866447873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:28,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:28,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835933221] [2024-06-04 14:47:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:28,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:28,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:28,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 473 transitions, 5619 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:28,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:28,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:28,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:30,186 INFO L124 PetriNetUnfolderBase]: 4070/6727 cut-off events. [2024-06-04 14:47:30,186 INFO L125 PetriNetUnfolderBase]: For 2056752/2056761 co-relation queries the response was YES. [2024-06-04 14:47:30,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73457 conditions, 6727 events. 4070/6727 cut-off events. For 2056752/2056761 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44732 event pairs, 898 based on Foata normal form. 7/6655 useless extension candidates. Maximal degree in co-relation 73262. Up to 6092 conditions per place. [2024-06-04 14:47:30,296 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 394 selfloop transitions, 47 changer transitions 0/487 dead transitions. [2024-06-04 14:47:30,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 487 transitions, 6621 flow [2024-06-04 14:47:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:47:30,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:47:30,297 INFO L175 Difference]: Start difference. First operand has 393 places, 473 transitions, 5619 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:47:30,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 487 transitions, 6621 flow [2024-06-04 14:47:34,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 487 transitions, 6437 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-04 14:47:34,246 INFO L231 Difference]: Finished difference. Result has 397 places, 476 transitions, 5635 flow [2024-06-04 14:47:34,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5438, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5635, PETRI_PLACES=397, PETRI_TRANSITIONS=476} [2024-06-04 14:47:34,246 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 352 predicate places. [2024-06-04 14:47:34,246 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 476 transitions, 5635 flow [2024-06-04 14:47:34,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:34,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:34,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:34,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:47:34,247 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:47:34,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash 156114176, now seen corresponding path program 10 times [2024-06-04 14:47:34,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:34,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054429818] [2024-06-04 14:47:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:35,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:35,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054429818] [2024-06-04 14:47:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054429818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:35,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:35,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432023758] [2024-06-04 14:47:35,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:35,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:35,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:35,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:35,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 476 transitions, 5635 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:35,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:35,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:35,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:36,845 INFO L124 PetriNetUnfolderBase]: 4081/6742 cut-off events. [2024-06-04 14:47:36,845 INFO L125 PetriNetUnfolderBase]: For 2097283/2097289 co-relation queries the response was YES. [2024-06-04 14:47:36,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74055 conditions, 6742 events. 4081/6742 cut-off events. For 2097283/2097289 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44805 event pairs, 915 based on Foata normal form. 3/6664 useless extension candidates. Maximal degree in co-relation 73859. Up to 6024 conditions per place. [2024-06-04 14:47:36,958 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 364 selfloop transitions, 88 changer transitions 0/498 dead transitions. [2024-06-04 14:47:36,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 498 transitions, 7591 flow [2024-06-04 14:47:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 14:47:36,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 14:47:36,959 INFO L175 Difference]: Start difference. First operand has 397 places, 476 transitions, 5635 flow. Second operand 8 states and 154 transitions. [2024-06-04 14:47:36,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 498 transitions, 7591 flow [2024-06-04 14:47:40,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 498 transitions, 7431 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 14:47:40,703 INFO L231 Difference]: Finished difference. Result has 399 places, 485 transitions, 6113 flow [2024-06-04 14:47:40,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5475, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6113, PETRI_PLACES=399, PETRI_TRANSITIONS=485} [2024-06-04 14:47:40,703 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 354 predicate places. [2024-06-04 14:47:40,703 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 485 transitions, 6113 flow [2024-06-04 14:47:40,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:40,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:40,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:40,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:47:40,704 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:47:40,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:40,704 INFO L85 PathProgramCache]: Analyzing trace with hash 156114362, now seen corresponding path program 10 times [2024-06-04 14:47:40,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:40,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406792682] [2024-06-04 14:47:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:40,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:41,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:41,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406792682] [2024-06-04 14:47:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406792682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:41,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355449692] [2024-06-04 14:47:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:41,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:47:41,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 485 transitions, 6113 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:41,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:41,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:47:41,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:43,373 INFO L124 PetriNetUnfolderBase]: 4290/7016 cut-off events. [2024-06-04 14:47:43,373 INFO L125 PetriNetUnfolderBase]: For 2137014/2137023 co-relation queries the response was YES. [2024-06-04 14:47:43,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76163 conditions, 7016 events. 4290/7016 cut-off events. For 2137014/2137023 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45923 event pairs, 962 based on Foata normal form. 5/7014 useless extension candidates. Maximal degree in co-relation 75966. Up to 6499 conditions per place. [2024-06-04 14:47:43,494 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 411 selfloop transitions, 87 changer transitions 0/503 dead transitions. [2024-06-04 14:47:43,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 503 transitions, 7701 flow [2024-06-04 14:47:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-04 14:47:43,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 14:47:43,495 INFO L175 Difference]: Start difference. First operand has 399 places, 485 transitions, 6113 flow. Second operand 8 states and 145 transitions. [2024-06-04 14:47:43,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 503 transitions, 7701 flow [2024-06-04 14:47:48,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 503 transitions, 7377 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-06-04 14:47:48,056 INFO L231 Difference]: Finished difference. Result has 403 places, 491 transitions, 6251 flow [2024-06-04 14:47:48,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5793, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6251, PETRI_PLACES=403, PETRI_TRANSITIONS=491} [2024-06-04 14:47:48,056 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 358 predicate places. [2024-06-04 14:47:48,056 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 491 transitions, 6251 flow [2024-06-04 14:47:48,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:48,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:48,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:48,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:47:48,057 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:47:48,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash 156411280, now seen corresponding path program 10 times [2024-06-04 14:47:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149331912] [2024-06-04 14:47:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149331912] [2024-06-04 14:47:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149331912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:49,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392587258] [2024-06-04 14:47:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:49,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:49,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:49,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:49,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:49,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:49,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 491 transitions, 6251 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:49,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:49,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:49,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:51,083 INFO L124 PetriNetUnfolderBase]: 4083/6746 cut-off events. [2024-06-04 14:47:51,083 INFO L125 PetriNetUnfolderBase]: For 2144740/2144749 co-relation queries the response was YES. [2024-06-04 14:47:51,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74546 conditions, 6746 events. 4083/6746 cut-off events. For 2144740/2144749 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44862 event pairs, 896 based on Foata normal form. 7/6674 useless extension candidates. Maximal degree in co-relation 74348. Up to 6098 conditions per place. [2024-06-04 14:47:51,204 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 400 selfloop transitions, 57 changer transitions 0/505 dead transitions. [2024-06-04 14:47:51,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 505 transitions, 7518 flow [2024-06-04 14:47:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:47:51,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:47:51,205 INFO L175 Difference]: Start difference. First operand has 403 places, 491 transitions, 6251 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:47:51,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 505 transitions, 7518 flow [2024-06-04 14:47:56,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 505 transitions, 7176 flow, removed 113 selfloop flow, removed 5 redundant places. [2024-06-04 14:47:56,635 INFO L231 Difference]: Finished difference. Result has 407 places, 493 transitions, 6083 flow [2024-06-04 14:47:56,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5915, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6083, PETRI_PLACES=407, PETRI_TRANSITIONS=493} [2024-06-04 14:47:56,635 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 362 predicate places. [2024-06-04 14:47:56,635 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 493 transitions, 6083 flow [2024-06-04 14:47:56,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:56,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:56,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:47:56,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:47:56,636 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:47:56,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:56,636 INFO L85 PathProgramCache]: Analyzing trace with hash 155994206, now seen corresponding path program 11 times [2024-06-04 14:47:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:56,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144917227] [2024-06-04 14:47:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:56,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:57,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:57,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144917227] [2024-06-04 14:47:57,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144917227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:57,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:57,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:47:57,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696538533] [2024-06-04 14:47:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:57,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:47:57,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:57,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:47:57,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:47:57,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:47:57,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 493 transitions, 6083 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:57,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:57,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:47:57,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:59,390 INFO L124 PetriNetUnfolderBase]: 4080/6743 cut-off events. [2024-06-04 14:47:59,391 INFO L125 PetriNetUnfolderBase]: For 2155600/2155603 co-relation queries the response was YES. [2024-06-04 14:47:59,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74088 conditions, 6743 events. 4080/6743 cut-off events. For 2155600/2155603 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44844 event pairs, 893 based on Foata normal form. 1/6665 useless extension candidates. Maximal degree in co-relation 73888. Up to 6134 conditions per place. [2024-06-04 14:47:59,508 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 427 selfloop transitions, 29 changer transitions 0/504 dead transitions. [2024-06-04 14:47:59,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 504 transitions, 7021 flow [2024-06-04 14:47:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:47:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:47:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 14:47:59,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:47:59,510 INFO L175 Difference]: Start difference. First operand has 407 places, 493 transitions, 6083 flow. Second operand 8 states and 147 transitions. [2024-06-04 14:47:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 504 transitions, 7021 flow [2024-06-04 14:48:04,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 504 transitions, 6798 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-04 14:48:04,324 INFO L231 Difference]: Finished difference. Result has 410 places, 493 transitions, 5924 flow [2024-06-04 14:48:04,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5860, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5924, PETRI_PLACES=410, PETRI_TRANSITIONS=493} [2024-06-04 14:48:04,325 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 365 predicate places. [2024-06-04 14:48:04,325 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 493 transitions, 5924 flow [2024-06-04 14:48:04,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:04,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:04,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:48:04,325 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:04,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1086334882, now seen corresponding path program 11 times [2024-06-04 14:48:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918193614] [2024-06-04 14:48:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:05,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:05,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918193614] [2024-06-04 14:48:05,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918193614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:05,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:05,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:48:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445078041] [2024-06-04 14:48:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:48:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:05,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:48:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:48:05,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:05,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 493 transitions, 5924 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:05,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:05,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:05,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:07,213 INFO L124 PetriNetUnfolderBase]: 4289/7013 cut-off events. [2024-06-04 14:48:07,213 INFO L125 PetriNetUnfolderBase]: For 2187175/2187184 co-relation queries the response was YES. [2024-06-04 14:48:07,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75562 conditions, 7013 events. 4289/7013 cut-off events. For 2187175/2187184 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 45874 event pairs, 962 based on Foata normal form. 5/7011 useless extension candidates. Maximal degree in co-relation 75361. Up to 6497 conditions per place. [2024-06-04 14:48:07,321 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 415 selfloop transitions, 88 changer transitions 0/508 dead transitions. [2024-06-04 14:48:07,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 508 transitions, 7368 flow [2024-06-04 14:48:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:48:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:48:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 14:48:07,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:48:07,323 INFO L175 Difference]: Start difference. First operand has 410 places, 493 transitions, 5924 flow. Second operand 8 states and 146 transitions. [2024-06-04 14:48:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 508 transitions, 7368 flow [2024-06-04 14:48:12,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 508 transitions, 7236 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 14:48:12,215 INFO L231 Difference]: Finished difference. Result has 409 places, 496 transitions, 6090 flow [2024-06-04 14:48:12,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5792, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6090, PETRI_PLACES=409, PETRI_TRANSITIONS=496} [2024-06-04 14:48:12,216 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 364 predicate places. [2024-06-04 14:48:12,216 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 496 transitions, 6090 flow [2024-06-04 14:48:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:12,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:12,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:12,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:48:12,216 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:12,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:12,217 INFO L85 PathProgramCache]: Analyzing trace with hash 333483032, now seen corresponding path program 12 times [2024-06-04 14:48:12,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:12,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545660285] [2024-06-04 14:48:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:12,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:13,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545660285] [2024-06-04 14:48:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545660285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:13,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:13,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:48:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500297395] [2024-06-04 14:48:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:13,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:48:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:48:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:48:13,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:13,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 496 transitions, 6090 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:13,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:13,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:15,075 INFO L124 PetriNetUnfolderBase]: 4286/7015 cut-off events. [2024-06-04 14:48:15,076 INFO L125 PetriNetUnfolderBase]: For 2204546/2204555 co-relation queries the response was YES. [2024-06-04 14:48:15,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75629 conditions, 7015 events. 4286/7015 cut-off events. For 2204546/2204555 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 45960 event pairs, 964 based on Foata normal form. 5/7013 useless extension candidates. Maximal degree in co-relation 75428. Up to 6494 conditions per place. [2024-06-04 14:48:15,192 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 412 selfloop transitions, 90 changer transitions 0/507 dead transitions. [2024-06-04 14:48:15,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 507 transitions, 7120 flow [2024-06-04 14:48:15,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:48:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:48:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 14:48:15,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:48:15,194 INFO L175 Difference]: Start difference. First operand has 409 places, 496 transitions, 6090 flow. Second operand 8 states and 144 transitions. [2024-06-04 14:48:15,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 507 transitions, 7120 flow [2024-06-04 14:48:19,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 507 transitions, 6728 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-06-04 14:48:19,884 INFO L231 Difference]: Finished difference. Result has 411 places, 496 transitions, 5884 flow [2024-06-04 14:48:19,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5884, PETRI_PLACES=411, PETRI_TRANSITIONS=496} [2024-06-04 14:48:19,885 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 366 predicate places. [2024-06-04 14:48:19,885 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 496 transitions, 5884 flow [2024-06-04 14:48:19,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:19,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:19,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:19,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:48:19,885 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:19,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash 333721360, now seen corresponding path program 11 times [2024-06-04 14:48:19,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:19,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115188377] [2024-06-04 14:48:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:21,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:21,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115188377] [2024-06-04 14:48:21,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115188377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:21,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:21,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:48:21,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331413067] [2024-06-04 14:48:21,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:21,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:48:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:21,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:48:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:48:21,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:21,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 496 transitions, 5884 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:21,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:21,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:21,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:22,873 INFO L124 PetriNetUnfolderBase]: 4079/6747 cut-off events. [2024-06-04 14:48:22,874 INFO L125 PetriNetUnfolderBase]: For 2215906/2215915 co-relation queries the response was YES. [2024-06-04 14:48:22,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74092 conditions, 6747 events. 4079/6747 cut-off events. For 2215906/2215915 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44903 event pairs, 898 based on Foata normal form. 7/6675 useless extension candidates. Maximal degree in co-relation 73890. Up to 6092 conditions per place. [2024-06-04 14:48:22,993 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 403 selfloop transitions, 58 changer transitions 0/510 dead transitions. [2024-06-04 14:48:22,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 510 transitions, 7190 flow [2024-06-04 14:48:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:48:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:48:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 14:48:22,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-04 14:48:22,994 INFO L175 Difference]: Start difference. First operand has 411 places, 496 transitions, 5884 flow. Second operand 8 states and 150 transitions. [2024-06-04 14:48:22,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 510 transitions, 7190 flow [2024-06-04 14:48:28,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 510 transitions, 6926 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:28,147 INFO L231 Difference]: Finished difference. Result has 413 places, 498 transitions, 5820 flow [2024-06-04 14:48:28,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5638, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5820, PETRI_PLACES=413, PETRI_TRANSITIONS=498} [2024-06-04 14:48:28,147 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 368 predicate places. [2024-06-04 14:48:28,148 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 498 transitions, 5820 flow [2024-06-04 14:48:28,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:28,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:28,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:28,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:48:28,148 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:28,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1086334634, now seen corresponding path program 12 times [2024-06-04 14:48:28,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514029468] [2024-06-04 14:48:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:29,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514029468] [2024-06-04 14:48:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514029468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:48:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27234041] [2024-06-04 14:48:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:29,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:48:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:48:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:48:29,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:29,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 498 transitions, 5820 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:29,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:29,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:29,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:31,156 INFO L124 PetriNetUnfolderBase]: 4076/6737 cut-off events. [2024-06-04 14:48:31,156 INFO L125 PetriNetUnfolderBase]: For 2232383/2232392 co-relation queries the response was YES. [2024-06-04 14:48:31,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73954 conditions, 6737 events. 4076/6737 cut-off events. For 2232383/2232392 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44801 event pairs, 896 based on Foata normal form. 7/6665 useless extension candidates. Maximal degree in co-relation 73750. Up to 6101 conditions per place. [2024-06-04 14:48:31,271 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 413 selfloop transitions, 47 changer transitions 0/509 dead transitions. [2024-06-04 14:48:31,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 509 transitions, 6766 flow [2024-06-04 14:48:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:48:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:48:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 14:48:31,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-04 14:48:31,272 INFO L175 Difference]: Start difference. First operand has 413 places, 498 transitions, 5820 flow. Second operand 8 states and 148 transitions. [2024-06-04 14:48:31,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 509 transitions, 6766 flow [2024-06-04 14:48:35,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 509 transitions, 6572 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-04 14:48:35,729 INFO L231 Difference]: Finished difference. Result has 416 places, 498 transitions, 5726 flow [2024-06-04 14:48:35,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5626, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5726, PETRI_PLACES=416, PETRI_TRANSITIONS=498} [2024-06-04 14:48:35,730 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 371 predicate places. [2024-06-04 14:48:35,730 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 498 transitions, 5726 flow [2024-06-04 14:48:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:35,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:35,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:35,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:48:35,731 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)] === [2024-06-04 14:48:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 333245696, now seen corresponding path program 12 times [2024-06-04 14:48:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571135621] [2024-06-04 14:48:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571135621] [2024-06-04 14:48:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571135621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:36,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:48:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909423410] [2024-06-04 14:48:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:48:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:48:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:48:36,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:48:36,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 498 transitions, 5726 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:36,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:36,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:48:36,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:38,464 INFO L124 PetriNetUnfolderBase]: 4071/6728 cut-off events. [2024-06-04 14:48:38,464 INFO L125 PetriNetUnfolderBase]: For 2248566/2248572 co-relation queries the response was YES. [2024-06-04 14:48:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73810 conditions, 6728 events. 4071/6728 cut-off events. For 2248566/2248572 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44716 event pairs, 915 based on Foata normal form. 3/6650 useless extension candidates. Maximal degree in co-relation 73605. Up to 6013 conditions per place. [2024-06-04 14:48:38,583 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 370 selfloop transitions, 90 changer transitions 0/509 dead transitions. [2024-06-04 14:48:38,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 509 transitions, 6672 flow [2024-06-04 14:48:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:48:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:48:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 14:48:38,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-04 14:48:38,585 INFO L175 Difference]: Start difference. First operand has 416 places, 498 transitions, 5726 flow. Second operand 8 states and 151 transitions. [2024-06-04 14:48:38,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 509 transitions, 6672 flow [2024-06-04 14:48:44,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 509 transitions, 6478 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-04 14:48:44,704 INFO L231 Difference]: Finished difference. Result has 418 places, 498 transitions, 5718 flow [2024-06-04 14:48:44,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5532, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5718, PETRI_PLACES=418, PETRI_TRANSITIONS=498} [2024-06-04 14:48:44,704 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 373 predicate places. [2024-06-04 14:48:44,704 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 498 transitions, 5718 flow [2024-06-04 14:48:44,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:44,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:44,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:44,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:48:44,705 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:44,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash 327522136, now seen corresponding path program 2 times [2024-06-04 14:48:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:44,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705978472] [2024-06-04 14:48:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:45,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:45,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705978472] [2024-06-04 14:48:45,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705978472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:45,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:45,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:48:45,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028994351] [2024-06-04 14:48:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:45,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:48:45,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:48:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:48:45,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:45,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 498 transitions, 5718 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:48:45,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:45,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:45,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:48,110 INFO L124 PetriNetUnfolderBase]: 4400/7217 cut-off events. [2024-06-04 14:48:48,110 INFO L125 PetriNetUnfolderBase]: For 2360735/2360738 co-relation queries the response was YES. [2024-06-04 14:48:48,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76903 conditions, 7217 events. 4400/7217 cut-off events. For 2360735/2360738 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 47637 event pairs, 921 based on Foata normal form. 12/7222 useless extension candidates. Maximal degree in co-relation 76697. Up to 6102 conditions per place. [2024-06-04 14:48:48,242 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 434 selfloop transitions, 111 changer transitions 0/550 dead transitions. [2024-06-04 14:48:48,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 550 transitions, 7180 flow [2024-06-04 14:48:48,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:48:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:48:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-04 14:48:48,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834710743801653 [2024-06-04 14:48:48,244 INFO L175 Difference]: Start difference. First operand has 418 places, 498 transitions, 5718 flow. Second operand 11 states and 217 transitions. [2024-06-04 14:48:48,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 550 transitions, 7180 flow [2024-06-04 14:48:53,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 550 transitions, 6962 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:53,351 INFO L231 Difference]: Finished difference. Result has 424 places, 506 transitions, 5912 flow [2024-06-04 14:48:53,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5500, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5912, PETRI_PLACES=424, PETRI_TRANSITIONS=506} [2024-06-04 14:48:53,351 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 379 predicate places. [2024-06-04 14:48:53,352 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 506 transitions, 5912 flow [2024-06-04 14:48:53,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:48:53,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:53,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:53,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:48:53,352 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:48:53,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1054042358, now seen corresponding path program 3 times [2024-06-04 14:48:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598153313] [2024-06-04 14:48:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598153313] [2024-06-04 14:48:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598153313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:54,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:54,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:48:54,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46229764] [2024-06-04 14:48:54,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:54,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:48:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:48:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:48:54,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:48:54,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 506 transitions, 5912 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:48:54,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:54,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:48:54,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:56,941 INFO L124 PetriNetUnfolderBase]: 4510/7417 cut-off events. [2024-06-04 14:48:56,942 INFO L125 PetriNetUnfolderBase]: For 2406848/2406851 co-relation queries the response was YES. [2024-06-04 14:48:57,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79404 conditions, 7417 events. 4510/7417 cut-off events. For 2406848/2406851 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 49457 event pairs, 946 based on Foata normal form. 12/7422 useless extension candidates. Maximal degree in co-relation 79195. Up to 6375 conditions per place. [2024-06-04 14:48:57,067 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 424 selfloop transitions, 133 changer transitions 0/562 dead transitions. [2024-06-04 14:48:57,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 562 transitions, 7442 flow [2024-06-04 14:48:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:48:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:48:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-04 14:48:57,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44421487603305787 [2024-06-04 14:48:57,068 INFO L175 Difference]: Start difference. First operand has 424 places, 506 transitions, 5912 flow. Second operand 11 states and 215 transitions. [2024-06-04 14:48:57,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 562 transitions, 7442 flow [2024-06-04 14:49:02,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 562 transitions, 7112 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-04 14:49:02,635 INFO L231 Difference]: Finished difference. Result has 430 places, 520 transitions, 6123 flow [2024-06-04 14:49:02,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5604, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6123, PETRI_PLACES=430, PETRI_TRANSITIONS=520} [2024-06-04 14:49:02,636 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 385 predicate places. [2024-06-04 14:49:02,636 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 520 transitions, 6123 flow [2024-06-04 14:49:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:49:02,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:02,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:02,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:49:02,637 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:02,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 294008098, now seen corresponding path program 4 times [2024-06-04 14:49:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764949941] [2024-06-04 14:49:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764949941] [2024-06-04 14:49:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764949941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:03,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:03,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:49:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31766856] [2024-06-04 14:49:03,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:03,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:49:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:49:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:49:04,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:04,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 520 transitions, 6123 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:49:04,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:04,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:04,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:06,244 INFO L124 PetriNetUnfolderBase]: 4715/7822 cut-off events. [2024-06-04 14:49:06,244 INFO L125 PetriNetUnfolderBase]: For 2453087/2453090 co-relation queries the response was YES. [2024-06-04 14:49:06,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81855 conditions, 7822 events. 4715/7822 cut-off events. For 2453087/2453090 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 53328 event pairs, 962 based on Foata normal form. 12/7827 useless extension candidates. Maximal degree in co-relation 81644. Up to 5385 conditions per place. [2024-06-04 14:49:06,391 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 411 selfloop transitions, 153 changer transitions 0/569 dead transitions. [2024-06-04 14:49:06,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 569 transitions, 7939 flow [2024-06-04 14:49:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:49:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:49:06,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-04 14:49:06,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2024-06-04 14:49:06,393 INFO L175 Difference]: Start difference. First operand has 430 places, 520 transitions, 6123 flow. Second operand 11 states and 216 transitions. [2024-06-04 14:49:06,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 569 transitions, 7939 flow [2024-06-04 14:49:12,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 569 transitions, 7711 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-04 14:49:12,739 INFO L231 Difference]: Finished difference. Result has 437 places, 525 transitions, 6439 flow [2024-06-04 14:49:12,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5895, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6439, PETRI_PLACES=437, PETRI_TRANSITIONS=525} [2024-06-04 14:49:12,739 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 392 predicate places. [2024-06-04 14:49:12,740 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 525 transitions, 6439 flow [2024-06-04 14:49:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:49:12,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:12,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:12,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:49:12,740 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:12,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:12,741 INFO L85 PathProgramCache]: Analyzing trace with hash 62162068, now seen corresponding path program 5 times [2024-06-04 14:49:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22642428] [2024-06-04 14:49:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:13,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:13,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22642428] [2024-06-04 14:49:13,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22642428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:13,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:13,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:49:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401544437] [2024-06-04 14:49:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:13,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:49:13,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:49:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:49:13,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:13,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 525 transitions, 6439 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:49:13,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:13,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:13,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:16,494 INFO L124 PetriNetUnfolderBase]: 4756/7903 cut-off events. [2024-06-04 14:49:16,495 INFO L125 PetriNetUnfolderBase]: For 2478251/2478254 co-relation queries the response was YES. [2024-06-04 14:49:16,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82402 conditions, 7903 events. 4756/7903 cut-off events. For 2478251/2478254 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 54079 event pairs, 1036 based on Foata normal form. 12/7908 useless extension candidates. Maximal degree in co-relation 82189. Up to 6617 conditions per place. [2024-06-04 14:49:16,636 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 443 selfloop transitions, 121 changer transitions 0/569 dead transitions. [2024-06-04 14:49:16,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 569 transitions, 7865 flow [2024-06-04 14:49:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:49:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:49:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-04 14:49:16,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-06-04 14:49:16,637 INFO L175 Difference]: Start difference. First operand has 437 places, 525 transitions, 6439 flow. Second operand 11 states and 218 transitions. [2024-06-04 14:49:16,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 569 transitions, 7865 flow [2024-06-04 14:49:22,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 569 transitions, 7518 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-04 14:49:22,559 INFO L231 Difference]: Finished difference. Result has 441 places, 527 transitions, 6452 flow [2024-06-04 14:49:22,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6107, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6452, PETRI_PLACES=441, PETRI_TRANSITIONS=527} [2024-06-04 14:49:22,559 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 396 predicate places. [2024-06-04 14:49:22,559 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 527 transitions, 6452 flow [2024-06-04 14:49:22,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:49:22,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:22,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:22,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:49:22,560 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 14:49:22,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash 805880980, now seen corresponding path program 6 times [2024-06-04 14:49:22,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:22,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438772926] [2024-06-04 14:49:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:23,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:23,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438772926] [2024-06-04 14:49:23,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438772926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:23,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:23,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:49:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113240261] [2024-06-04 14:49:23,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:23,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:49:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:49:23,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:49:24,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 14:49:24,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 527 transitions, 6452 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:49:24,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:24,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 14:49:24,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:27,021 INFO L124 PetriNetUnfolderBase]: 4736/7871 cut-off events. [2024-06-04 14:49:27,022 INFO L125 PetriNetUnfolderBase]: For 2408769/2408772 co-relation queries the response was YES. [2024-06-04 14:49:27,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80158 conditions, 7871 events. 4736/7871 cut-off events. For 2408769/2408772 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 53863 event pairs, 1022 based on Foata normal form. 12/7876 useless extension candidates. Maximal degree in co-relation 79943. Up to 6769 conditions per place. [2024-06-04 14:49:27,151 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 435 selfloop transitions, 128 changer transitions 0/568 dead transitions. [2024-06-04 14:49:27,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 568 transitions, 7618 flow [2024-06-04 14:49:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:49:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:49:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-04 14:49:27,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44421487603305787 [2024-06-04 14:49:27,152 INFO L175 Difference]: Start difference. First operand has 441 places, 527 transitions, 6452 flow. Second operand 11 states and 215 transitions. [2024-06-04 14:49:27,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 568 transitions, 7618 flow [2024-06-04 14:49:33,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 568 transitions, 7299 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-04 14:49:33,795 INFO L231 Difference]: Finished difference. Result has 443 places, 526 transitions, 6231 flow [2024-06-04 14:49:33,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5971, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6231, PETRI_PLACES=443, PETRI_TRANSITIONS=526} [2024-06-04 14:49:33,795 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 398 predicate places. [2024-06-04 14:49:33,796 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 526 transitions, 6231 flow [2024-06-04 14:49:33,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 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) [2024-06-04 14:49:33,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:33,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:33,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:49:33,800 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)] === [2024-06-04 14:49:33,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash 155991230, now seen corresponding path program 4 times [2024-06-04 14:49:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:33,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770327936] [2024-06-04 14:49:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:33,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:34,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:34,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770327936] [2024-06-04 14:49:34,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770327936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:34,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:34,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:49:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831055733] [2024-06-04 14:49:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:49:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:34,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:49:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:49:34,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:34,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 526 transitions, 6231 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:34,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:34,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:34,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:37,113 INFO L124 PetriNetUnfolderBase]: 4525/7598 cut-off events. [2024-06-04 14:49:37,113 INFO L125 PetriNetUnfolderBase]: For 2332714/2332717 co-relation queries the response was YES. [2024-06-04 14:49:37,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77756 conditions, 7598 events. 4525/7598 cut-off events. For 2332714/2332717 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 52717 event pairs, 986 based on Foata normal form. 2/7521 useless extension candidates. Maximal degree in co-relation 77542. Up to 6906 conditions per place. [2024-06-04 14:49:37,251 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 463 selfloop transitions, 28 changer transitions 0/540 dead transitions. [2024-06-04 14:49:37,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 540 transitions, 7335 flow [2024-06-04 14:49:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:49:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:49:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 14:49:37,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:49:37,252 INFO L175 Difference]: Start difference. First operand has 443 places, 526 transitions, 6231 flow. Second operand 8 states and 146 transitions. [2024-06-04 14:49:37,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 540 transitions, 7335 flow [2024-06-04 14:49:44,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 540 transitions, 6701 flow, removed 21 selfloop flow, removed 15 redundant places. [2024-06-04 14:49:44,527 INFO L231 Difference]: Finished difference. Result has 436 places, 528 transitions, 5756 flow [2024-06-04 14:49:44,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5597, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5756, PETRI_PLACES=436, PETRI_TRANSITIONS=528} [2024-06-04 14:49:44,527 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 391 predicate places. [2024-06-04 14:49:44,527 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 528 transitions, 5756 flow [2024-06-04 14:49:44,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:44,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:44,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:44,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:49:44,528 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)] === [2024-06-04 14:49:44,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash 824986198, now seen corresponding path program 1 times [2024-06-04 14:49:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074030471] [2024-06-04 14:49:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:45,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074030471] [2024-06-04 14:49:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074030471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:45,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257976953] [2024-06-04 14:49:45,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:45,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:45,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 528 transitions, 5756 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:45,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:45,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:45,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:48,407 INFO L124 PetriNetUnfolderBase]: 4604/7737 cut-off events. [2024-06-04 14:49:48,407 INFO L125 PetriNetUnfolderBase]: For 2333597/2333597 co-relation queries the response was YES. [2024-06-04 14:49:48,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76199 conditions, 7737 events. 4604/7737 cut-off events. For 2333597/2333597 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 53599 event pairs, 989 based on Foata normal form. 1/7735 useless extension candidates. Maximal degree in co-relation 75991. Up to 7113 conditions per place. [2024-06-04 14:49:48,538 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 507 selfloop transitions, 20 changer transitions 0/555 dead transitions. [2024-06-04 14:49:48,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 555 transitions, 6992 flow [2024-06-04 14:49:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:49:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:49:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:49:48,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:49:48,539 INFO L175 Difference]: Start difference. First operand has 436 places, 528 transitions, 5756 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:49:48,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 555 transitions, 6992 flow [2024-06-04 14:49:56,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 555 transitions, 6849 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-04 14:49:56,157 INFO L231 Difference]: Finished difference. Result has 439 places, 531 transitions, 5787 flow [2024-06-04 14:49:56,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5613, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5787, PETRI_PLACES=439, PETRI_TRANSITIONS=531} [2024-06-04 14:49:56,157 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 394 predicate places. [2024-06-04 14:49:56,158 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 531 transitions, 5787 flow [2024-06-04 14:49:56,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:56,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:56,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:56,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:49:56,158 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)] === [2024-06-04 14:49:56,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash 37208332, now seen corresponding path program 1 times [2024-06-04 14:49:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:56,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427175159] [2024-06-04 14:49:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:56,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427175159] [2024-06-04 14:49:57,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427175159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:57,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:57,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:49:57,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846628510] [2024-06-04 14:49:57,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:57,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:49:57,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:49:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:49:57,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:49:57,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 531 transitions, 5787 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:57,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:57,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:49:57,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:59,790 INFO L124 PetriNetUnfolderBase]: 4624/7769 cut-off events. [2024-06-04 14:49:59,790 INFO L125 PetriNetUnfolderBase]: For 2425194/2425194 co-relation queries the response was YES. [2024-06-04 14:49:59,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77071 conditions, 7769 events. 4624/7769 cut-off events. For 2425194/2425194 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 53864 event pairs, 988 based on Foata normal form. 6/7772 useless extension candidates. Maximal degree in co-relation 76862. Up to 7135 conditions per place. [2024-06-04 14:50:00,053 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 509 selfloop transitions, 21 changer transitions 0/558 dead transitions. [2024-06-04 14:50:00,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 558 transitions, 6997 flow [2024-06-04 14:50:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:50:00,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:50:00,054 INFO L175 Difference]: Start difference. First operand has 439 places, 531 transitions, 5787 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:50:00,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 558 transitions, 6997 flow [2024-06-04 14:50:06,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 558 transitions, 6845 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:06,852 INFO L231 Difference]: Finished difference. Result has 441 places, 535 transitions, 5774 flow [2024-06-04 14:50:06,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5635, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5774, PETRI_PLACES=441, PETRI_TRANSITIONS=535} [2024-06-04 14:50:06,853 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 396 predicate places. [2024-06-04 14:50:06,853 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 535 transitions, 5774 flow [2024-06-04 14:50:06,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:06,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:06,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:06,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:50:06,853 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)] === [2024-06-04 14:50:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -453925946, now seen corresponding path program 2 times [2024-06-04 14:50:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41975380] [2024-06-04 14:50:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:07,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:07,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41975380] [2024-06-04 14:50:07,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41975380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:07,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:07,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:07,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759167058] [2024-06-04 14:50:07,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:07,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:08,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:08,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 535 transitions, 5774 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:08,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:08,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:08,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:10,557 INFO L124 PetriNetUnfolderBase]: 4648/7805 cut-off events. [2024-06-04 14:50:10,557 INFO L125 PetriNetUnfolderBase]: For 2472294/2472298 co-relation queries the response was YES. [2024-06-04 14:50:10,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78556 conditions, 7805 events. 4648/7805 cut-off events. For 2472294/2472298 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 54041 event pairs, 988 based on Foata normal form. 6/7807 useless extension candidates. Maximal degree in co-relation 78346. Up to 7160 conditions per place. [2024-06-04 14:50:10,704 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 506 selfloop transitions, 26 changer transitions 0/560 dead transitions. [2024-06-04 14:50:10,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 560 transitions, 6996 flow [2024-06-04 14:50:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 14:50:10,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-04 14:50:10,705 INFO L175 Difference]: Start difference. First operand has 441 places, 535 transitions, 5774 flow. Second operand 9 states and 169 transitions. [2024-06-04 14:50:10,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 560 transitions, 6996 flow [2024-06-04 14:50:17,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 560 transitions, 6889 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:17,820 INFO L231 Difference]: Finished difference. Result has 443 places, 539 transitions, 5824 flow [2024-06-04 14:50:17,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5824, PETRI_PLACES=443, PETRI_TRANSITIONS=539} [2024-06-04 14:50:17,821 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 398 predicate places. [2024-06-04 14:50:17,821 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 539 transitions, 5824 flow [2024-06-04 14:50:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:17,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:17,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:17,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:50:17,822 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)] === [2024-06-04 14:50:17,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash 41856472, now seen corresponding path program 3 times [2024-06-04 14:50:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592171902] [2024-06-04 14:50:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:17,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592171902] [2024-06-04 14:50:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592171902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:19,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:19,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271080715] [2024-06-04 14:50:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:19,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:19,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:19,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 539 transitions, 5824 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:19,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:19,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:19,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:21,746 INFO L124 PetriNetUnfolderBase]: 4668/7833 cut-off events. [2024-06-04 14:50:21,747 INFO L125 PetriNetUnfolderBase]: For 2476558/2476566 co-relation queries the response was YES. [2024-06-04 14:50:21,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79881 conditions, 7833 events. 4668/7833 cut-off events. For 2476558/2476566 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 54304 event pairs, 987 based on Foata normal form. 2/7831 useless extension candidates. Maximal degree in co-relation 79670. Up to 7160 conditions per place. [2024-06-04 14:50:21,876 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 502 selfloop transitions, 37 changer transitions 0/567 dead transitions. [2024-06-04 14:50:21,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 567 transitions, 7454 flow [2024-06-04 14:50:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:50:21,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:50:21,877 INFO L175 Difference]: Start difference. First operand has 443 places, 539 transitions, 5824 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:50:21,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 567 transitions, 7454 flow [2024-06-04 14:50:29,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 567 transitions, 7329 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-04 14:50:29,770 INFO L231 Difference]: Finished difference. Result has 446 places, 545 transitions, 5960 flow [2024-06-04 14:50:29,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5699, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5960, PETRI_PLACES=446, PETRI_TRANSITIONS=545} [2024-06-04 14:50:29,770 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 401 predicate places. [2024-06-04 14:50:29,770 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 545 transitions, 5960 flow [2024-06-04 14:50:29,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:29,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:29,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:50:29,771 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)] === [2024-06-04 14:50:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1115477774, now seen corresponding path program 4 times [2024-06-04 14:50:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831225869] [2024-06-04 14:50:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:31,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831225869] [2024-06-04 14:50:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831225869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:31,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:31,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3855902] [2024-06-04 14:50:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:31,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:31,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:31,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:31,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:31,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 545 transitions, 5960 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:31,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:31,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:31,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:33,450 INFO L124 PetriNetUnfolderBase]: 4717/7905 cut-off events. [2024-06-04 14:50:33,450 INFO L125 PetriNetUnfolderBase]: For 2588789/2588799 co-relation queries the response was YES. [2024-06-04 14:50:33,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82107 conditions, 7905 events. 4717/7905 cut-off events. For 2588789/2588799 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 54766 event pairs, 993 based on Foata normal form. 3/7905 useless extension candidates. Maximal degree in co-relation 81894. Up to 7218 conditions per place. [2024-06-04 14:50:33,583 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 504 selfloop transitions, 40 changer transitions 0/572 dead transitions. [2024-06-04 14:50:33,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 572 transitions, 7638 flow [2024-06-04 14:50:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:50:33,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:50:33,585 INFO L175 Difference]: Start difference. First operand has 446 places, 545 transitions, 5960 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:50:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 572 transitions, 7638 flow [2024-06-04 14:50:41,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 572 transitions, 7517 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-04 14:50:41,204 INFO L231 Difference]: Finished difference. Result has 450 places, 552 transitions, 6131 flow [2024-06-04 14:50:41,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5839, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6131, PETRI_PLACES=450, PETRI_TRANSITIONS=552} [2024-06-04 14:50:41,205 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 405 predicate places. [2024-06-04 14:50:41,205 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 552 transitions, 6131 flow [2024-06-04 14:50:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:41,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:41,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:41,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:50:41,205 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)] === [2024-06-04 14:50:41,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1002237874, now seen corresponding path program 5 times [2024-06-04 14:50:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576104009] [2024-06-04 14:50:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:42,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576104009] [2024-06-04 14:50:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576104009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:42,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:42,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:42,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448758145] [2024-06-04 14:50:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:42,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:42,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:42,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:42,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 552 transitions, 6131 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:42,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:42,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:42,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:44,724 INFO L124 PetriNetUnfolderBase]: 4699/7881 cut-off events. [2024-06-04 14:50:44,724 INFO L125 PetriNetUnfolderBase]: For 2588274/2588280 co-relation queries the response was YES. [2024-06-04 14:50:44,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82071 conditions, 7881 events. 4699/7881 cut-off events. For 2588274/2588280 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 54640 event pairs, 989 based on Foata normal form. 7/7885 useless extension candidates. Maximal degree in co-relation 81856. Up to 7220 conditions per place. [2024-06-04 14:50:45,030 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 509 selfloop transitions, 33 changer transitions 0/570 dead transitions. [2024-06-04 14:50:45,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 570 transitions, 7291 flow [2024-06-04 14:50:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:50:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:50:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 14:50:45,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:50:45,032 INFO L175 Difference]: Start difference. First operand has 450 places, 552 transitions, 6131 flow. Second operand 9 states and 168 transitions. [2024-06-04 14:50:45,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 570 transitions, 7291 flow [2024-06-04 14:50:53,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 570 transitions, 7149 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-04 14:50:53,983 INFO L231 Difference]: Finished difference. Result has 453 places, 552 transitions, 6062 flow [2024-06-04 14:50:53,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5989, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6062, PETRI_PLACES=453, PETRI_TRANSITIONS=552} [2024-06-04 14:50:53,983 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 408 predicate places. [2024-06-04 14:50:53,984 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 552 transitions, 6062 flow [2024-06-04 14:50:53,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:53,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:53,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:53,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:50:53,984 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)] === [2024-06-04 14:50:53,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1002483952, now seen corresponding path program 1 times [2024-06-04 14:50:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4580087] [2024-06-04 14:50:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:55,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:55,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4580087] [2024-06-04 14:50:55,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4580087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:55,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:55,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:50:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548065054] [2024-06-04 14:50:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:55,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:50:55,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:50:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:50:55,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:50:55,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 552 transitions, 6062 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:55,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:55,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:50:55,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:57,898 INFO L124 PetriNetUnfolderBase]: 4641/7761 cut-off events. [2024-06-04 14:50:57,898 INFO L125 PetriNetUnfolderBase]: For 2531849/2531860 co-relation queries the response was YES. [2024-06-04 14:50:57,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81799 conditions, 7761 events. 4641/7761 cut-off events. For 2531849/2531860 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 53756 event pairs, 970 based on Foata normal form. 10/7692 useless extension candidates. Maximal degree in co-relation 81583. Up to 7098 conditions per place. [2024-06-04 14:50:58,027 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 497 selfloop transitions, 19 changer transitions 0/566 dead transitions. [2024-06-04 14:50:58,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 566 transitions, 7128 flow [2024-06-04 14:50:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:50:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:50:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 14:50:58,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-04 14:50:58,028 INFO L175 Difference]: Start difference. First operand has 453 places, 552 transitions, 6062 flow. Second operand 8 states and 146 transitions. [2024-06-04 14:50:58,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 566 transitions, 7128 flow [2024-06-04 14:51:05,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 566 transitions, 6955 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:05,302 INFO L231 Difference]: Finished difference. Result has 454 places, 552 transitions, 5935 flow [2024-06-04 14:51:05,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5889, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5935, PETRI_PLACES=454, PETRI_TRANSITIONS=552} [2024-06-04 14:51:05,303 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 409 predicate places. [2024-06-04 14:51:05,303 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 552 transitions, 5935 flow [2024-06-04 14:51:05,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:05,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:05,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:05,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:51:05,303 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)] === [2024-06-04 14:51:05,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:05,304 INFO L85 PathProgramCache]: Analyzing trace with hash 214577002, now seen corresponding path program 6 times [2024-06-04 14:51:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:05,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231463953] [2024-06-04 14:51:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:06,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:06,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231463953] [2024-06-04 14:51:06,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231463953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:06,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:51:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615471768] [2024-06-04 14:51:06,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:51:06,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:51:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:51:06,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:06,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 552 transitions, 5935 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:06,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:06,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:08,965 INFO L124 PetriNetUnfolderBase]: 4694/7876 cut-off events. [2024-06-04 14:51:08,965 INFO L125 PetriNetUnfolderBase]: For 2589656/2589670 co-relation queries the response was YES. [2024-06-04 14:51:09,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81800 conditions, 7876 events. 4694/7876 cut-off events. For 2589656/2589670 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 54631 event pairs, 986 based on Foata normal form. 3/7875 useless extension candidates. Maximal degree in co-relation 81583. Up to 7135 conditions per place. [2024-06-04 14:51:09,098 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 483 selfloop transitions, 64 changer transitions 0/575 dead transitions. [2024-06-04 14:51:09,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 575 transitions, 7535 flow [2024-06-04 14:51:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:51:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:51:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 14:51:09,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-04 14:51:09,099 INFO L175 Difference]: Start difference. First operand has 454 places, 552 transitions, 5935 flow. Second operand 9 states and 172 transitions. [2024-06-04 14:51:09,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 575 transitions, 7535 flow [2024-06-04 14:51:15,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 575 transitions, 7433 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:15,599 INFO L231 Difference]: Finished difference. Result has 455 places, 555 transitions, 6061 flow [2024-06-04 14:51:15,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6061, PETRI_PLACES=455, PETRI_TRANSITIONS=555} [2024-06-04 14:51:15,600 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 410 predicate places. [2024-06-04 14:51:15,600 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 555 transitions, 6061 flow [2024-06-04 14:51:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:15,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:15,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:15,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:51:15,600 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)] === [2024-06-04 14:51:15,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:15,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1353923458, now seen corresponding path program 7 times [2024-06-04 14:51:15,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:15,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464987134] [2024-06-04 14:51:15,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:15,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464987134] [2024-06-04 14:51:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464987134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:16,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:51:16,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196389262] [2024-06-04 14:51:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:16,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:51:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:16,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:51:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:51:16,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-04 14:51:16,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 555 transitions, 6061 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:16,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:16,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-04 14:51:16,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:19,270 INFO L124 PetriNetUnfolderBase]: 4752/7961 cut-off events. [2024-06-04 14:51:19,271 INFO L125 PetriNetUnfolderBase]: For 2720127/2720144 co-relation queries the response was YES. [2024-06-04 14:51:19,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84832 conditions, 7961 events. 4752/7961 cut-off events. For 2720127/2720144 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 55161 event pairs, 1005 based on Foata normal form. 3/7959 useless extension candidates. Maximal degree in co-relation 84615. Up to 7254 conditions per place. [2024-06-04 14:51:19,411 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 505 selfloop transitions, 49 changer transitions 0/582 dead transitions. [2024-06-04 14:51:19,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 582 transitions, 7883 flow [2024-06-04 14:51:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:51:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:51:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 14:51:19,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-04 14:51:19,412 INFO L175 Difference]: Start difference. First operand has 455 places, 555 transitions, 6061 flow. Second operand 9 states and 171 transitions. [2024-06-04 14:51:19,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 582 transitions, 7883 flow