./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix002.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/mix002.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/mix002.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix002.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-cde23df-m [2024-06-14 11:46:30,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:46:30,656 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:46:30,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:46:30,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:46:30,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:46:30,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:46:30,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:46:30,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:46:30,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:46:30,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:46:30,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:46:30,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:46:30,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:46:30,674 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:46:30,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:46:30,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:46:30,675 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:46:30,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:46:30,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:46:30,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:46:30,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:46:30,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:46:30,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:46:30,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:46:30,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:46:30,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:46:30,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:46:30,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:46:30,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:46:30,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:46:30,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:46:30,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:46:30,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:46:30,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:46:30,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:46:30,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:46:30,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:46:30,688 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:46:30,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:46:30,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:46:30,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:46:30,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:46:30,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:46:30,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:46:30,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:46:30,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:46:30,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:46:30,913 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:46:30,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-06-14 11:46:31,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:46:32,219 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:46:32,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-06-14 11:46:32,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e4ddcaf/01307b96b1194b939941267733531bb3/FLAGb6bcba5f1 [2024-06-14 11:46:32,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9e4ddcaf/01307b96b1194b939941267733531bb3 [2024-06-14 11:46:32,246 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:46:32,246 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:46:32,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix002.opt.yml/witness.yml [2024-06-14 11:46:32,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:46:32,417 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:46:32,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:46:32,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:46:32,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:46:32,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:46:32" (1/2) ... [2024-06-14 11:46:32,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26660254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:32, skipping insertion in model container [2024-06-14 11:46:32,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:46:32" (1/2) ... [2024-06-14 11:46:32,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7691e523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:32, skipping insertion in model container [2024-06-14 11:46:32,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:46:32" (2/2) ... [2024-06-14 11:46:32,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26660254 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32, skipping insertion in model container [2024-06-14 11:46:32,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:46:32" (2/2) ... [2024-06-14 11:46:32,427 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:46:32,505 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:46:32,506 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0) [2024-06-14 11:46:32,506 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0) [2024-06-14 11:46:32,506 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0) [2024-06-14 11:46:32,507 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:46:32,507 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-06-14 11:46:32,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:46:32,850 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:46:32,858 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:46:32,968 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:46:32,997 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:46:32,997 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32 WrapperNode [2024-06-14 11:46:32,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:46:32,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:46:32,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:46:32,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:46:33,003 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 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,017 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 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,051 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2024-06-14 11:46:33,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:46:33,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:46:33,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:46:33,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:46:33,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,079 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]. [2024-06-14 11:46:33,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:46:33,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:46:33,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:46:33,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:46:33,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (1/1) ... [2024-06-14 11:46:33,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:46:33,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:46:33,141 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) [2024-06-14 11:46:33,164 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 [2024-06-14 11:46:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:46:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:46:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:46:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:46:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:46:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:46:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 11:46:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 11:46:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:46:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:46:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:46:33,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:46:33,182 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:46:33,316 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:46:33,318 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:46:33,675 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:46:33,675 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:46:33,803 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:46:33,803 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:46:33,804 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:46:33 BoogieIcfgContainer [2024-06-14 11:46:33,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:46:33,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:46:33,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:46:33,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:46:33,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:46:32" (1/4) ... [2024-06-14 11:46:33,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403ec141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:46:33, skipping insertion in model container [2024-06-14 11:46:33,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:46:32" (2/4) ... [2024-06-14 11:46:33,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403ec141 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:46:33, skipping insertion in model container [2024-06-14 11:46:33,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:32" (3/4) ... [2024-06-14 11:46:33,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403ec141 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:46:33, skipping insertion in model container [2024-06-14 11:46:33,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:46:33" (4/4) ... [2024-06-14 11:46:33,810 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.opt.i [2024-06-14 11:46:33,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:46:33,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 11:46:33,824 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:46:33,859 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:46:33,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 45 transitions, 102 flow [2024-06-14 11:46:33,903 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2024-06-14 11:46:33,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:46:33,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 0/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:46:33,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 45 transitions, 102 flow [2024-06-14 11:46:33,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 36 transitions, 81 flow [2024-06-14 11:46:33,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:46:33,920 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;@2c527154, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:46:33,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 11:46:33,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:46:33,924 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:46:33,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:46:33,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:33,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:46:33,925 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)] === [2024-06-14 11:46:33,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash -330315619, now seen corresponding path program 1 times [2024-06-14 11:46:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49217192] [2024-06-14 11:46:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:35,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49217192] [2024-06-14 11:46:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49217192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:35,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:46:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989810759] [2024-06-14 11:46:35,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:35,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:46:35,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:46:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:46:35,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-06-14 11:46:35,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:35,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:35,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-06-14 11:46:35,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:35,705 INFO L124 PetriNetUnfolderBase]: 1116/1793 cut-off events. [2024-06-14 11:46:35,705 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-06-14 11:46:35,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 1793 events. 1116/1793 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9566 event pairs, 765 based on Foata normal form. 1/1727 useless extension candidates. Maximal degree in co-relation 3531. Up to 1676 conditions per place. [2024-06-14 11:46:35,720 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 33 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-14 11:46:35,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 181 flow [2024-06-14 11:46:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:46:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:46:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-14 11:46:35,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-06-14 11:46:35,730 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 81 flow. Second operand 3 states and 85 transitions. [2024-06-14 11:46:35,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 181 flow [2024-06-14 11:46:35,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:35,734 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2024-06-14 11:46:35,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-14 11:46:35,738 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-06-14 11:46:35,738 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2024-06-14 11:46:35,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:35,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:35,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:46:35,739 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)] === [2024-06-14 11:46:35,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash 394286780, now seen corresponding path program 1 times [2024-06-14 11:46:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167096559] [2024-06-14 11:46:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:35,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:36,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:36,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167096559] [2024-06-14 11:46:36,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167096559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:36,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:36,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:46:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717323901] [2024-06-14 11:46:36,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:36,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:46:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:46:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:46:36,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-06-14 11:46:36,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:36,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:36,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-06-14 11:46:36,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:37,212 INFO L124 PetriNetUnfolderBase]: 1280/1989 cut-off events. [2024-06-14 11:46:37,213 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-06-14 11:46:37,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 1989 events. 1280/1989 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10404 event pairs, 750 based on Foata normal form. 3/1973 useless extension candidates. Maximal degree in co-relation 4497. Up to 1897 conditions per place. [2024-06-14 11:46:37,222 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-14 11:46:37,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 250 flow [2024-06-14 11:46:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:46:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:46:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-14 11:46:37,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-14 11:46:37,224 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 4 states and 107 transitions. [2024-06-14 11:46:37,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 250 flow [2024-06-14 11:46:37,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:46:37,226 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 144 flow [2024-06-14 11:46:37,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-14 11:46:37,228 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2024-06-14 11:46:37,228 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 144 flow [2024-06-14 11:46:37,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:37,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:37,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:37,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:46:37,231 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)] === [2024-06-14 11:46:37,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash -662011124, now seen corresponding path program 1 times [2024-06-14 11:46:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783552828] [2024-06-14 11:46:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:38,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783552828] [2024-06-14 11:46:38,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783552828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:38,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:38,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:46:38,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278772375] [2024-06-14 11:46:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:46:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:46:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:46:38,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:46:38,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:38,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:38,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:46:38,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:38,981 INFO L124 PetriNetUnfolderBase]: 1558/2399 cut-off events. [2024-06-14 11:46:38,981 INFO L125 PetriNetUnfolderBase]: For 1327/1327 co-relation queries the response was YES. [2024-06-14 11:46:38,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 2399 events. 1558/2399 cut-off events. For 1327/1327 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12346 event pairs, 839 based on Foata normal form. 3/2388 useless extension candidates. Maximal degree in co-relation 6000. Up to 2286 conditions per place. [2024-06-14 11:46:38,994 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 49 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-14 11:46:38,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 330 flow [2024-06-14 11:46:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:46:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:46:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-14 11:46:38,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2024-06-14 11:46:38,999 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 144 flow. Second operand 5 states and 127 transitions. [2024-06-14 11:46:38,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 330 flow [2024-06-14 11:46:39,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 316 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:39,002 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 180 flow [2024-06-14 11:46:39,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-14 11:46:39,004 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2024-06-14 11:46:39,004 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 180 flow [2024-06-14 11:46:39,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:39,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:39,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:39,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:46:39,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:46:39,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:39,005 INFO L85 PathProgramCache]: Analyzing trace with hash 952492251, now seen corresponding path program 1 times [2024-06-14 11:46:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:39,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098889256] [2024-06-14 11:46:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:39,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:40,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:40,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098889256] [2024-06-14 11:46:40,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098889256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:40,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:40,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:46:40,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469383065] [2024-06-14 11:46:40,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:40,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:46:40,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:40,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:46:40,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:46:40,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:46:40,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:40,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:40,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:46:40,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:40,995 INFO L124 PetriNetUnfolderBase]: 1552/2416 cut-off events. [2024-06-14 11:46:40,995 INFO L125 PetriNetUnfolderBase]: For 2467/2467 co-relation queries the response was YES. [2024-06-14 11:46:41,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 2416 events. 1552/2416 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12595 event pairs, 697 based on Foata normal form. 3/2412 useless extension candidates. Maximal degree in co-relation 6586. Up to 2262 conditions per place. [2024-06-14 11:46:41,010 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 56 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-14 11:46:41,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 408 flow [2024-06-14 11:46:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-14 11:46:41,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-14 11:46:41,013 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 180 flow. Second operand 6 states and 150 transitions. [2024-06-14 11:46:41,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 408 flow [2024-06-14 11:46:41,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 384 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:41,018 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 216 flow [2024-06-14 11:46:41,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-14 11:46:41,020 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-06-14 11:46:41,020 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 216 flow [2024-06-14 11:46:41,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:41,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:41,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:41,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:46:41,022 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)] === [2024-06-14 11:46:41,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash -600692411, now seen corresponding path program 1 times [2024-06-14 11:46:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69233503] [2024-06-14 11:46:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:41,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:41,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69233503] [2024-06-14 11:46:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69233503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:41,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:41,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:46:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819241514] [2024-06-14 11:46:41,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:41,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:46:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:46:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:46:41,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:46:41,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 216 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) [2024-06-14 11:46:41,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:41,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:46:41,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:42,279 INFO L124 PetriNetUnfolderBase]: 1836/2892 cut-off events. [2024-06-14 11:46:42,279 INFO L125 PetriNetUnfolderBase]: For 4386/4386 co-relation queries the response was YES. [2024-06-14 11:46:42,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8380 conditions, 2892 events. 1836/2892 cut-off events. For 4386/4386 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15175 event pairs, 950 based on Foata normal form. 2/2851 useless extension candidates. Maximal degree in co-relation 8361. Up to 2709 conditions per place. [2024-06-14 11:46:42,295 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 46 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-06-14 11:46:42,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 368 flow [2024-06-14 11:46:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:46:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:46:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-14 11:46:42,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-06-14 11:46:42,297 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 216 flow. Second operand 5 states and 108 transitions. [2024-06-14 11:46:42,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 368 flow [2024-06-14 11:46:42,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 334 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:42,303 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 228 flow [2024-06-14 11:46:42,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-14 11:46:42,306 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-06-14 11:46:42,306 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 228 flow [2024-06-14 11:46:42,306 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) [2024-06-14 11:46:42,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:42,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:42,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:46:42,310 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)] === [2024-06-14 11:46:42,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1396907775, now seen corresponding path program 1 times [2024-06-14 11:46:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404679593] [2024-06-14 11:46:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:43,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:43,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404679593] [2024-06-14 11:46:43,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404679593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:43,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:43,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:43,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167793355] [2024-06-14 11:46:43,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:43,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:43,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:43,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:43,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:46:43,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:43,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:43,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:46:43,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:43,790 INFO L124 PetriNetUnfolderBase]: 1819/2923 cut-off events. [2024-06-14 11:46:43,790 INFO L125 PetriNetUnfolderBase]: For 6017/6017 co-relation queries the response was YES. [2024-06-14 11:46:43,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8947 conditions, 2923 events. 1819/2923 cut-off events. For 6017/6017 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15596 event pairs, 914 based on Foata normal form. 4/2916 useless extension candidates. Maximal degree in co-relation 8926. Up to 2677 conditions per place. [2024-06-14 11:46:43,807 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 51 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-14 11:46:43,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 412 flow [2024-06-14 11:46:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-14 11:46:43,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-14 11:46:43,809 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 228 flow. Second operand 6 states and 128 transitions. [2024-06-14 11:46:43,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 412 flow [2024-06-14 11:46:43,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 390 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:43,813 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 262 flow [2024-06-14 11:46:43,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-14 11:46:43,815 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2024-06-14 11:46:43,816 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 262 flow [2024-06-14 11:46:43,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:43,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:43,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:43,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:46:43,816 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)] === [2024-06-14 11:46:43,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash 960394628, now seen corresponding path program 1 times [2024-06-14 11:46:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:43,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596031494] [2024-06-14 11:46:43,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:43,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:44,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596031494] [2024-06-14 11:46:44,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596031494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:44,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:44,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:44,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273447391] [2024-06-14 11:46:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:44,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:44,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:44,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:46:44,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 262 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) [2024-06-14 11:46:44,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:44,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:46:44,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:45,324 INFO L124 PetriNetUnfolderBase]: 2110/3222 cut-off events. [2024-06-14 11:46:45,324 INFO L125 PetriNetUnfolderBase]: For 9465/9471 co-relation queries the response was YES. [2024-06-14 11:46:45,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 3222 events. 2110/3222 cut-off events. For 9465/9471 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16336 event pairs, 1074 based on Foata normal form. 6/3224 useless extension candidates. Maximal degree in co-relation 10800. Up to 3081 conditions per place. [2024-06-14 11:46:45,347 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 57 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-14 11:46:45,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 526 flow [2024-06-14 11:46:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-14 11:46:45,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-14 11:46:45,348 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 262 flow. Second operand 6 states and 129 transitions. [2024-06-14 11:46:45,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 526 flow [2024-06-14 11:46:45,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 494 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:45,352 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 320 flow [2024-06-14 11:46:45,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-06-14 11:46:45,353 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-06-14 11:46:45,354 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 320 flow [2024-06-14 11:46:45,354 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) [2024-06-14 11:46:45,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:45,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:45,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:46:45,354 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)] === [2024-06-14 11:46:45,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash -308896442, now seen corresponding path program 2 times [2024-06-14 11:46:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241514308] [2024-06-14 11:46:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:45,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:46,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241514308] [2024-06-14 11:46:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241514308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:46,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:46,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487170891] [2024-06-14 11:46:46,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:46,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:46:46,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 320 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) [2024-06-14 11:46:46,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:46,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:46:46,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:46,829 INFO L124 PetriNetUnfolderBase]: 2105/3216 cut-off events. [2024-06-14 11:46:46,829 INFO L125 PetriNetUnfolderBase]: For 12312/12327 co-relation queries the response was YES. [2024-06-14 11:46:46,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11494 conditions, 3216 events. 2105/3216 cut-off events. For 12312/12327 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16298 event pairs, 1077 based on Foata normal form. 12/3223 useless extension candidates. Maximal degree in co-relation 11471. Up to 3076 conditions per place. [2024-06-14 11:46:46,849 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 52 selfloop transitions, 16 changer transitions 0/75 dead transitions. [2024-06-14 11:46:46,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 494 flow [2024-06-14 11:46:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-14 11:46:46,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-14 11:46:46,851 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 320 flow. Second operand 6 states and 124 transitions. [2024-06-14 11:46:46,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 494 flow [2024-06-14 11:46:46,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 458 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:46,857 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 324 flow [2024-06-14 11:46:46,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-14 11:46:46,858 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-06-14 11:46:46,858 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 324 flow [2024-06-14 11:46:46,858 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) [2024-06-14 11:46:46,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:46,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:46,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:46:46,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:46:46,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:46,859 INFO L85 PathProgramCache]: Analyzing trace with hash -550811992, now seen corresponding path program 1 times [2024-06-14 11:46:46,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:46,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118128683] [2024-06-14 11:46:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:46,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:48,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:48,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118128683] [2024-06-14 11:46:48,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118128683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:48,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:48,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609344264] [2024-06-14 11:46:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:48,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:46:48,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:48,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:46:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:49,411 INFO L124 PetriNetUnfolderBase]: 2077/3188 cut-off events. [2024-06-14 11:46:49,411 INFO L125 PetriNetUnfolderBase]: For 14831/14831 co-relation queries the response was YES. [2024-06-14 11:46:49,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11637 conditions, 3188 events. 2077/3188 cut-off events. For 14831/14831 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16363 event pairs, 684 based on Foata normal form. 6/3183 useless extension candidates. Maximal degree in co-relation 11612. Up to 2955 conditions per place. [2024-06-14 11:46:49,427 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 77 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2024-06-14 11:46:49,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 642 flow [2024-06-14 11:46:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-14 11:46:49,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-14 11:46:49,429 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 324 flow. Second operand 8 states and 185 transitions. [2024-06-14 11:46:49,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 642 flow [2024-06-14 11:46:49,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 602 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:49,436 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 363 flow [2024-06-14 11:46:49,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=363, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-14 11:46:49,437 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-06-14 11:46:49,437 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 363 flow [2024-06-14 11:46:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:49,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:49,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:49,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:46:49,438 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)] === [2024-06-14 11:46:49,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:49,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1887845370, now seen corresponding path program 1 times [2024-06-14 11:46:49,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:49,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947545835] [2024-06-14 11:46:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:49,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:50,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:50,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947545835] [2024-06-14 11:46:50,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947545835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:50,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:50,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344174500] [2024-06-14 11:46:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:50,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:46:50,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 363 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) [2024-06-14 11:46:50,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:50,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:46:50,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:51,078 INFO L124 PetriNetUnfolderBase]: 2225/3342 cut-off events. [2024-06-14 11:46:51,078 INFO L125 PetriNetUnfolderBase]: For 18489/18495 co-relation queries the response was YES. [2024-06-14 11:46:51,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12932 conditions, 3342 events. 2225/3342 cut-off events. For 18489/18495 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16575 event pairs, 871 based on Foata normal form. 6/3344 useless extension candidates. Maximal degree in co-relation 12906. Up to 3195 conditions per place. [2024-06-14 11:46:51,093 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 68 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-14 11:46:51,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 97 transitions, 707 flow [2024-06-14 11:46:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-14 11:46:51,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 11:46:51,095 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 363 flow. Second operand 7 states and 144 transitions. [2024-06-14 11:46:51,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 97 transitions, 707 flow [2024-06-14 11:46:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 654 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:51,103 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 428 flow [2024-06-14 11:46:51,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-14 11:46:51,103 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-06-14 11:46:51,104 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 428 flow [2024-06-14 11:46:51,104 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) [2024-06-14 11:46:51,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:51,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:46:51,104 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)] === [2024-06-14 11:46:51,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1665897438, now seen corresponding path program 1 times [2024-06-14 11:46:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888084825] [2024-06-14 11:46:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:51,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888084825] [2024-06-14 11:46:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888084825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:51,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:51,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241543350] [2024-06-14 11:46:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:51,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:51,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:52,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:46:52,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 428 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) [2024-06-14 11:46:52,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:52,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:46:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:52,701 INFO L124 PetriNetUnfolderBase]: 2135/3267 cut-off events. [2024-06-14 11:46:52,701 INFO L125 PetriNetUnfolderBase]: For 22600/22606 co-relation queries the response was YES. [2024-06-14 11:46:52,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13244 conditions, 3267 events. 2135/3267 cut-off events. For 22600/22606 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16646 event pairs, 821 based on Foata normal form. 5/3268 useless extension candidates. Maximal degree in co-relation 13216. Up to 3034 conditions per place. [2024-06-14 11:46:52,716 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 71 selfloop transitions, 23 changer transitions 0/103 dead transitions. [2024-06-14 11:46:52,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 103 transitions, 782 flow [2024-06-14 11:46:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-14 11:46:52,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-06-14 11:46:52,718 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 428 flow. Second operand 7 states and 151 transitions. [2024-06-14 11:46:52,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 103 transitions, 782 flow [2024-06-14 11:46:52,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 738 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:52,729 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 504 flow [2024-06-14 11:46:52,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-06-14 11:46:52,729 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-06-14 11:46:52,729 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 504 flow [2024-06-14 11:46:52,730 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) [2024-06-14 11:46:52,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:52,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:46:52,730 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)] === [2024-06-14 11:46:52,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:52,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1665897190, now seen corresponding path program 2 times [2024-06-14 11:46:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:52,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908048686] [2024-06-14 11:46:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:53,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:53,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908048686] [2024-06-14 11:46:53,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908048686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:53,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:53,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529613237] [2024-06-14 11:46:53,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:53,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:53,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:46:53,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 504 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) [2024-06-14 11:46:53,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:53,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:46:53,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:54,308 INFO L124 PetriNetUnfolderBase]: 2258/3395 cut-off events. [2024-06-14 11:46:54,308 INFO L125 PetriNetUnfolderBase]: For 27341/27344 co-relation queries the response was YES. [2024-06-14 11:46:54,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14567 conditions, 3395 events. 2258/3395 cut-off events. For 27341/27344 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16852 event pairs, 849 based on Foata normal form. 4/3395 useless extension candidates. Maximal degree in co-relation 14537. Up to 3239 conditions per place. [2024-06-14 11:46:54,322 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 72 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-06-14 11:46:54,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 103 transitions, 834 flow [2024-06-14 11:46:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-14 11:46:54,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-14 11:46:54,324 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 504 flow. Second operand 7 states and 142 transitions. [2024-06-14 11:46:54,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 103 transitions, 834 flow [2024-06-14 11:46:54,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 796 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:54,337 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 556 flow [2024-06-14 11:46:54,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-06-14 11:46:54,338 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2024-06-14 11:46:54,338 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 556 flow [2024-06-14 11:46:54,338 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) [2024-06-14 11:46:54,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:54,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:54,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:46:54,339 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)] === [2024-06-14 11:46:54,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1144812158, now seen corresponding path program 2 times [2024-06-14 11:46:54,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:54,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333982969] [2024-06-14 11:46:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:54,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:55,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333982969] [2024-06-14 11:46:55,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333982969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:55,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:55,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:55,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607298683] [2024-06-14 11:46:55,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:55,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:55,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:55,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:55,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:55,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:46:55,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 556 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) [2024-06-14 11:46:55,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:55,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:46:55,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:56,042 INFO L124 PetriNetUnfolderBase]: 2168/3316 cut-off events. [2024-06-14 11:46:56,042 INFO L125 PetriNetUnfolderBase]: For 31103/31115 co-relation queries the response was YES. [2024-06-14 11:46:56,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14588 conditions, 3316 events. 2168/3316 cut-off events. For 31103/31115 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16845 event pairs, 814 based on Foata normal form. 12/3323 useless extension candidates. Maximal degree in co-relation 14556. Up to 3064 conditions per place. [2024-06-14 11:46:56,061 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 70 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2024-06-14 11:46:56,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 106 transitions, 890 flow [2024-06-14 11:46:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-14 11:46:56,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46984126984126984 [2024-06-14 11:46:56,063 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 556 flow. Second operand 7 states and 148 transitions. [2024-06-14 11:46:56,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 106 transitions, 890 flow [2024-06-14 11:46:56,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 836 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:56,083 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 598 flow [2024-06-14 11:46:56,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=598, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-06-14 11:46:56,083 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-06-14 11:46:56,084 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 598 flow [2024-06-14 11:46:56,084 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) [2024-06-14 11:46:56,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:56,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:56,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:46:56,084 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)] === [2024-06-14 11:46:56,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1896423008, now seen corresponding path program 3 times [2024-06-14 11:46:56,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:56,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853481250] [2024-06-14 11:46:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:57,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853481250] [2024-06-14 11:46:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853481250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:57,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:57,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:57,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086559285] [2024-06-14 11:46:57,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:57,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:57,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:57,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:57,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:46:57,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 598 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) [2024-06-14 11:46:57,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:57,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:46:57,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:57,784 INFO L124 PetriNetUnfolderBase]: 2158/3302 cut-off events. [2024-06-14 11:46:57,784 INFO L125 PetriNetUnfolderBase]: For 34774/34786 co-relation queries the response was YES. [2024-06-14 11:46:57,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14820 conditions, 3302 events. 2158/3302 cut-off events. For 34774/34786 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16798 event pairs, 814 based on Foata normal form. 12/3309 useless extension candidates. Maximal degree in co-relation 14787. Up to 3056 conditions per place. [2024-06-14 11:46:57,802 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 66 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2024-06-14 11:46:57,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 103 transitions, 836 flow [2024-06-14 11:46:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-14 11:46:57,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 11:46:57,803 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 598 flow. Second operand 7 states and 144 transitions. [2024-06-14 11:46:57,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 103 transitions, 836 flow [2024-06-14 11:46:57,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 103 transitions, 740 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:57,824 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 564 flow [2024-06-14 11:46:57,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2024-06-14 11:46:57,824 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-06-14 11:46:57,824 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 564 flow [2024-06-14 11:46:57,825 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) [2024-06-14 11:46:57,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:57,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:46:57,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:46:57,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash -286049820, now seen corresponding path program 3 times [2024-06-14 11:46:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:57,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306723648] [2024-06-14 11:46:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:58,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:58,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306723648] [2024-06-14 11:46:58,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306723648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:58,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:58,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:58,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966238087] [2024-06-14 11:46:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:58,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:58,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:58,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:58,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:58,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:46:58,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 564 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) [2024-06-14 11:46:58,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:58,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:46:58,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:59,591 INFO L124 PetriNetUnfolderBase]: 2265/3408 cut-off events. [2024-06-14 11:46:59,591 INFO L125 PetriNetUnfolderBase]: For 38543/38558 co-relation queries the response was YES. [2024-06-14 11:46:59,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15485 conditions, 3408 events. 2265/3408 cut-off events. For 38543/38558 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16885 event pairs, 862 based on Foata normal form. 9/3411 useless extension candidates. Maximal degree in co-relation 15451. Up to 3252 conditions per place. [2024-06-14 11:46:59,605 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 70 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-14 11:46:59,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 804 flow [2024-06-14 11:46:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-14 11:46:59,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2024-06-14 11:46:59,606 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 564 flow. Second operand 7 states and 137 transitions. [2024-06-14 11:46:59,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 804 flow [2024-06-14 11:46:59,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 101 transitions, 726 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:59,623 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 546 flow [2024-06-14 11:46:59,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2024-06-14 11:46:59,624 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2024-06-14 11:46:59,624 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 546 flow [2024-06-14 11:46:59,624 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) [2024-06-14 11:46:59,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:59,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:59,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:46:59,625 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:46:59,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1172028178, now seen corresponding path program 1 times [2024-06-14 11:46:59,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:59,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790817314] [2024-06-14 11:46:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:59,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:00,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:00,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790817314] [2024-06-14 11:47:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790817314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:00,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:47:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125004507] [2024-06-14 11:47:00,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:00,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:47:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:47:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:47:00,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-06-14 11:47:00,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:00,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:00,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-06-14 11:47:00,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:00,915 INFO L124 PetriNetUnfolderBase]: 1650/2759 cut-off events. [2024-06-14 11:47:00,915 INFO L125 PetriNetUnfolderBase]: For 36447/36447 co-relation queries the response was YES. [2024-06-14 11:47:00,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12722 conditions, 2759 events. 1650/2759 cut-off events. For 36447/36447 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15543 event pairs, 665 based on Foata normal form. 1/2749 useless extension candidates. Maximal degree in co-relation 12687. Up to 2429 conditions per place. [2024-06-14 11:47:00,931 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 65 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2024-06-14 11:47:00,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 93 transitions, 734 flow [2024-06-14 11:47:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:47:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:47:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-14 11:47:00,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-14 11:47:00,932 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 546 flow. Second operand 5 states and 111 transitions. [2024-06-14 11:47:00,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 93 transitions, 734 flow [2024-06-14 11:47:00,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 93 transitions, 658 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:00,955 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 520 flow [2024-06-14 11:47:00,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2024-06-14 11:47:00,955 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2024-06-14 11:47:00,955 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 520 flow [2024-06-14 11:47:00,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:00,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:00,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:00,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:47:00,957 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)] === [2024-06-14 11:47:00,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash -484411933, now seen corresponding path program 1 times [2024-06-14 11:47:00,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:00,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145829839] [2024-06-14 11:47:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:00,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:01,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:01,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145829839] [2024-06-14 11:47:01,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145829839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:01,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:01,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428909418] [2024-06-14 11:47:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:01,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:01,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:01,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:01,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:01,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 520 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) [2024-06-14 11:47:01,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:01,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:01,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:02,755 INFO L124 PetriNetUnfolderBase]: 2273/3417 cut-off events. [2024-06-14 11:47:02,756 INFO L125 PetriNetUnfolderBase]: For 46538/46541 co-relation queries the response was YES. [2024-06-14 11:47:02,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16316 conditions, 3417 events. 2273/3417 cut-off events. For 46538/46541 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16927 event pairs, 830 based on Foata normal form. 4/3417 useless extension candidates. Maximal degree in co-relation 16280. Up to 3219 conditions per place. [2024-06-14 11:47:02,771 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 85 selfloop transitions, 35 changer transitions 0/125 dead transitions. [2024-06-14 11:47:02,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 125 transitions, 976 flow [2024-06-14 11:47:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-14 11:47:02,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 11:47:02,773 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 520 flow. Second operand 8 states and 165 transitions. [2024-06-14 11:47:02,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 125 transitions, 976 flow [2024-06-14 11:47:02,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 125 transitions, 948 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 11:47:02,793 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 644 flow [2024-06-14 11:47:02,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-06-14 11:47:02,793 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-06-14 11:47:02,794 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 644 flow [2024-06-14 11:47:02,794 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) [2024-06-14 11:47:02,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:02,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:02,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:47:02,794 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)] === [2024-06-14 11:47:02,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash -484262203, now seen corresponding path program 2 times [2024-06-14 11:47:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:02,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480452462] [2024-06-14 11:47:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:02,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480452462] [2024-06-14 11:47:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480452462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801698311] [2024-06-14 11:47:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:03,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:03,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:03,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:03,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:03,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:03,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 644 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) [2024-06-14 11:47:03,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:03,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:03,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:04,583 INFO L124 PetriNetUnfolderBase]: 2284/3433 cut-off events. [2024-06-14 11:47:04,583 INFO L125 PetriNetUnfolderBase]: For 52919/52922 co-relation queries the response was YES. [2024-06-14 11:47:04,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17197 conditions, 3433 events. 2284/3433 cut-off events. For 52919/52922 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17025 event pairs, 830 based on Foata normal form. 4/3433 useless extension candidates. Maximal degree in co-relation 17160. Up to 3231 conditions per place. [2024-06-14 11:47:04,600 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 84 selfloop transitions, 36 changer transitions 0/125 dead transitions. [2024-06-14 11:47:04,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 1068 flow [2024-06-14 11:47:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-14 11:47:04,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-14 11:47:04,604 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 644 flow. Second operand 8 states and 163 transitions. [2024-06-14 11:47:04,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 1068 flow [2024-06-14 11:47:04,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 986 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:04,634 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 682 flow [2024-06-14 11:47:04,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=682, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-06-14 11:47:04,635 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-06-14 11:47:04,635 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 682 flow [2024-06-14 11:47:04,635 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) [2024-06-14 11:47:04,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:04,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:04,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:47:04,636 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)] === [2024-06-14 11:47:04,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash 97642430, now seen corresponding path program 1 times [2024-06-14 11:47:04,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:04,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922503398] [2024-06-14 11:47:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:04,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:05,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:05,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922503398] [2024-06-14 11:47:05,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922503398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:05,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:05,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:05,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414313000] [2024-06-14 11:47:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:05,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:05,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:05,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:05,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 682 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) [2024-06-14 11:47:05,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:05,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:05,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:06,550 INFO L124 PetriNetUnfolderBase]: 2306/3467 cut-off events. [2024-06-14 11:47:06,550 INFO L125 PetriNetUnfolderBase]: For 58572/58575 co-relation queries the response was YES. [2024-06-14 11:47:06,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17561 conditions, 3467 events. 2306/3467 cut-off events. For 58572/58575 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17177 event pairs, 757 based on Foata normal form. 4/3467 useless extension candidates. Maximal degree in co-relation 17522. Up to 3158 conditions per place. [2024-06-14 11:47:06,571 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 90 selfloop transitions, 40 changer transitions 0/135 dead transitions. [2024-06-14 11:47:06,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 135 transitions, 1170 flow [2024-06-14 11:47:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-14 11:47:06,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 11:47:06,572 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 682 flow. Second operand 8 states and 168 transitions. [2024-06-14 11:47:06,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 135 transitions, 1170 flow [2024-06-14 11:47:06,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 135 transitions, 1099 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:06,611 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 777 flow [2024-06-14 11:47:06,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=777, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2024-06-14 11:47:06,611 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-06-14 11:47:06,611 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 777 flow [2024-06-14 11:47:06,611 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) [2024-06-14 11:47:06,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:06,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:06,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:47:06,612 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)] === [2024-06-14 11:47:06,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash 103206403, now seen corresponding path program 3 times [2024-06-14 11:47:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:06,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379198674] [2024-06-14 11:47:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:07,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:07,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379198674] [2024-06-14 11:47:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379198674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:07,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:07,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700266267] [2024-06-14 11:47:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:07,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:07,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:07,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:07,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 777 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) [2024-06-14 11:47:07,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:07,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:07,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:08,441 INFO L124 PetriNetUnfolderBase]: 2317/3483 cut-off events. [2024-06-14 11:47:08,441 INFO L125 PetriNetUnfolderBase]: For 65301/65304 co-relation queries the response was YES. [2024-06-14 11:47:08,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18367 conditions, 3483 events. 2317/3483 cut-off events. For 65301/65304 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17305 event pairs, 808 based on Foata normal form. 4/3483 useless extension candidates. Maximal degree in co-relation 18327. Up to 3275 conditions per place. [2024-06-14 11:47:08,458 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 88 selfloop transitions, 38 changer transitions 0/131 dead transitions. [2024-06-14 11:47:08,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 1206 flow [2024-06-14 11:47:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 11:47:08,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-14 11:47:08,460 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 777 flow. Second operand 8 states and 161 transitions. [2024-06-14 11:47:08,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 1206 flow [2024-06-14 11:47:08,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 131 transitions, 1138 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:08,491 INFO L231 Difference]: Finished difference. Result has 98 places, 103 transitions, 826 flow [2024-06-14 11:47:08,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=826, PETRI_PLACES=98, PETRI_TRANSITIONS=103} [2024-06-14 11:47:08,492 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2024-06-14 11:47:08,493 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 103 transitions, 826 flow [2024-06-14 11:47:08,493 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) [2024-06-14 11:47:08,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:08,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:08,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:47:08,494 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)] === [2024-06-14 11:47:08,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash 103206620, now seen corresponding path program 2 times [2024-06-14 11:47:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:08,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149015625] [2024-06-14 11:47:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:09,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:09,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149015625] [2024-06-14 11:47:09,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149015625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:09,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610772609] [2024-06-14 11:47:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:09,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:09,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:09,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 103 transitions, 826 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) [2024-06-14 11:47:09,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:09,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:09,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:10,247 INFO L124 PetriNetUnfolderBase]: 2371/3561 cut-off events. [2024-06-14 11:47:10,247 INFO L125 PetriNetUnfolderBase]: For 72636/72639 co-relation queries the response was YES. [2024-06-14 11:47:10,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19154 conditions, 3561 events. 2371/3561 cut-off events. For 72636/72639 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17697 event pairs, 755 based on Foata normal form. 4/3561 useless extension candidates. Maximal degree in co-relation 19112. Up to 3220 conditions per place. [2024-06-14 11:47:10,267 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 96 selfloop transitions, 43 changer transitions 0/144 dead transitions. [2024-06-14 11:47:10,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 144 transitions, 1416 flow [2024-06-14 11:47:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-14 11:47:10,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-14 11:47:10,270 INFO L175 Difference]: Start difference. First operand has 98 places, 103 transitions, 826 flow. Second operand 8 states and 170 transitions. [2024-06-14 11:47:10,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 144 transitions, 1416 flow [2024-06-14 11:47:10,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 144 transitions, 1342 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:10,302 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 918 flow [2024-06-14 11:47:10,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=918, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2024-06-14 11:47:10,303 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2024-06-14 11:47:10,303 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 918 flow [2024-06-14 11:47:10,303 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) [2024-06-14 11:47:10,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:10,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:10,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:47:10,303 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)] === [2024-06-14 11:47:10,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 103214060, now seen corresponding path program 3 times [2024-06-14 11:47:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:10,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035049709] [2024-06-14 11:47:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:11,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:11,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035049709] [2024-06-14 11:47:11,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035049709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:11,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:11,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:11,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262561348] [2024-06-14 11:47:11,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:11,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:11,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:11,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:11,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:11,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:11,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 918 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) [2024-06-14 11:47:11,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:11,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:11,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:12,116 INFO L124 PetriNetUnfolderBase]: 2361/3547 cut-off events. [2024-06-14 11:47:12,116 INFO L125 PetriNetUnfolderBase]: For 78347/78350 co-relation queries the response was YES. [2024-06-14 11:47:12,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19398 conditions, 3547 events. 2361/3547 cut-off events. For 78347/78350 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17567 event pairs, 755 based on Foata normal form. 4/3547 useless extension candidates. Maximal degree in co-relation 19355. Up to 3212 conditions per place. [2024-06-14 11:47:12,136 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 92 selfloop transitions, 44 changer transitions 0/141 dead transitions. [2024-06-14 11:47:12,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 141 transitions, 1350 flow [2024-06-14 11:47:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-14 11:47:12,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-14 11:47:12,137 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 918 flow. Second operand 8 states and 166 transitions. [2024-06-14 11:47:12,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 141 transitions, 1350 flow [2024-06-14 11:47:12,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 141 transitions, 1252 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:12,176 INFO L231 Difference]: Finished difference. Result has 105 places, 109 transitions, 916 flow [2024-06-14 11:47:12,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=916, PETRI_PLACES=105, PETRI_TRANSITIONS=109} [2024-06-14 11:47:12,177 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2024-06-14 11:47:12,177 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 109 transitions, 916 flow [2024-06-14 11:47:12,177 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) [2024-06-14 11:47:12,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:12,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:12,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:47:12,177 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)] === [2024-06-14 11:47:12,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:12,177 INFO L85 PathProgramCache]: Analyzing trace with hash -487499792, now seen corresponding path program 4 times [2024-06-14 11:47:12,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:12,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485482751] [2024-06-14 11:47:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:12,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:13,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:13,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485482751] [2024-06-14 11:47:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485482751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:13,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838002581] [2024-06-14 11:47:13,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:13,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:13,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:13,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 109 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) [2024-06-14 11:47:13,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:13,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:13,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:13,937 INFO L124 PetriNetUnfolderBase]: 2383/3581 cut-off events. [2024-06-14 11:47:13,937 INFO L125 PetriNetUnfolderBase]: For 85429/85441 co-relation queries the response was YES. [2024-06-14 11:47:13,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19838 conditions, 3581 events. 2383/3581 cut-off events. For 85429/85441 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17767 event pairs, 769 based on Foata normal form. 9/3584 useless extension candidates. Maximal degree in co-relation 19794. Up to 3231 conditions per place. [2024-06-14 11:47:13,957 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 86 selfloop transitions, 49 changer transitions 0/140 dead transitions. [2024-06-14 11:47:13,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 140 transitions, 1385 flow [2024-06-14 11:47:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 11:47:13,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-14 11:47:13,958 INFO L175 Difference]: Start difference. First operand has 105 places, 109 transitions, 916 flow. Second operand 8 states and 161 transitions. [2024-06-14 11:47:13,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 140 transitions, 1385 flow [2024-06-14 11:47:13,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 140 transitions, 1302 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:14,000 INFO L231 Difference]: Finished difference. Result has 107 places, 112 transitions, 984 flow [2024-06-14 11:47:14,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=107, PETRI_TRANSITIONS=112} [2024-06-14 11:47:14,000 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-06-14 11:47:14,000 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 112 transitions, 984 flow [2024-06-14 11:47:14,000 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) [2024-06-14 11:47:14,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:14,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:47:14,001 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)] === [2024-06-14 11:47:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1165284372, now seen corresponding path program 5 times [2024-06-14 11:47:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650409717] [2024-06-14 11:47:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:14,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:14,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650409717] [2024-06-14 11:47:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650409717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:14,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:14,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:14,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512187870] [2024-06-14 11:47:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:14,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:14,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:14,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 112 transitions, 984 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) [2024-06-14 11:47:14,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:14,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:14,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:15,741 INFO L124 PetriNetUnfolderBase]: 2405/3618 cut-off events. [2024-06-14 11:47:15,741 INFO L125 PetriNetUnfolderBase]: For 93207/93219 co-relation queries the response was YES. [2024-06-14 11:47:15,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20344 conditions, 3618 events. 2405/3618 cut-off events. For 93207/93219 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18012 event pairs, 764 based on Foata normal form. 9/3621 useless extension candidates. Maximal degree in co-relation 20299. Up to 3250 conditions per place. [2024-06-14 11:47:15,764 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 90 selfloop transitions, 49 changer transitions 0/144 dead transitions. [2024-06-14 11:47:15,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 144 transitions, 1470 flow [2024-06-14 11:47:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-14 11:47:15,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-14 11:47:15,765 INFO L175 Difference]: Start difference. First operand has 107 places, 112 transitions, 984 flow. Second operand 8 states and 164 transitions. [2024-06-14 11:47:15,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 144 transitions, 1470 flow [2024-06-14 11:47:15,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 144 transitions, 1362 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:15,820 INFO L231 Difference]: Finished difference. Result has 110 places, 115 transitions, 1030 flow [2024-06-14 11:47:15,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1030, PETRI_PLACES=110, PETRI_TRANSITIONS=115} [2024-06-14 11:47:15,820 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2024-06-14 11:47:15,821 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 115 transitions, 1030 flow [2024-06-14 11:47:15,821 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) [2024-06-14 11:47:15,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:15,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:15,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:47:15,821 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)] === [2024-06-14 11:47:15,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:15,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1165292029, now seen corresponding path program 4 times [2024-06-14 11:47:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:15,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400633236] [2024-06-14 11:47:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:15,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:16,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400633236] [2024-06-14 11:47:16,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400633236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:16,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:16,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740341746] [2024-06-14 11:47:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:16,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:16,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:16,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 115 transitions, 1030 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) [2024-06-14 11:47:16,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:16,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:16,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:17,577 INFO L124 PetriNetUnfolderBase]: 2400/3612 cut-off events. [2024-06-14 11:47:17,577 INFO L125 PetriNetUnfolderBase]: For 99240/99249 co-relation queries the response was YES. [2024-06-14 11:47:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20515 conditions, 3612 events. 2400/3612 cut-off events. For 99240/99249 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17985 event pairs, 840 based on Foata normal form. 5/3610 useless extension candidates. Maximal degree in co-relation 20469. Up to 3398 conditions per place. [2024-06-14 11:47:17,598 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 95 selfloop transitions, 38 changer transitions 0/138 dead transitions. [2024-06-14 11:47:17,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 1354 flow [2024-06-14 11:47:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-14 11:47:17,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 11:47:17,599 INFO L175 Difference]: Start difference. First operand has 110 places, 115 transitions, 1030 flow. Second operand 8 states and 156 transitions. [2024-06-14 11:47:17,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 1354 flow [2024-06-14 11:47:17,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 138 transitions, 1160 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:17,651 INFO L231 Difference]: Finished difference. Result has 110 places, 115 transitions, 920 flow [2024-06-14 11:47:17,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=110, PETRI_TRANSITIONS=115} [2024-06-14 11:47:17,651 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2024-06-14 11:47:17,652 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 115 transitions, 920 flow [2024-06-14 11:47:17,652 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) [2024-06-14 11:47:17,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:17,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:17,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:47:17,652 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:17,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash -277608546, now seen corresponding path program 6 times [2024-06-14 11:47:17,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:17,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619625953] [2024-06-14 11:47:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:17,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:18,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619625953] [2024-06-14 11:47:18,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619625953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:18,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:18,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054843470] [2024-06-14 11:47:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:18,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:18,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:18,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 115 transitions, 920 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) [2024-06-14 11:47:18,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:18,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:18,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:19,489 INFO L124 PetriNetUnfolderBase]: 2390/3597 cut-off events. [2024-06-14 11:47:19,489 INFO L125 PetriNetUnfolderBase]: For 104460/104469 co-relation queries the response was YES. [2024-06-14 11:47:19,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20454 conditions, 3597 events. 2390/3597 cut-off events. For 104460/104469 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17912 event pairs, 762 based on Foata normal form. 7/3598 useless extension candidates. Maximal degree in co-relation 20407. Up to 3235 conditions per place. [2024-06-14 11:47:19,517 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 87 selfloop transitions, 50 changer transitions 0/142 dead transitions. [2024-06-14 11:47:19,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 1260 flow [2024-06-14 11:47:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 11:47:19,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-14 11:47:19,518 INFO L175 Difference]: Start difference. First operand has 110 places, 115 transitions, 920 flow. Second operand 8 states and 161 transitions. [2024-06-14 11:47:19,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 1260 flow [2024-06-14 11:47:19,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 142 transitions, 1112 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 11:47:19,579 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 880 flow [2024-06-14 11:47:19,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=880, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2024-06-14 11:47:19,580 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-06-14 11:47:19,580 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 880 flow [2024-06-14 11:47:19,580 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) [2024-06-14 11:47:19,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:19,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:19,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:47:19,580 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)] === [2024-06-14 11:47:19,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:19,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1155748989, now seen corresponding path program 1 times [2024-06-14 11:47:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:19,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435832773] [2024-06-14 11:47:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435832773] [2024-06-14 11:47:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435832773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:47:20,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735271864] [2024-06-14 11:47:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:20,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:47:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:47:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:47:20,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:47:20,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:20,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:20,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:47:20,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:21,543 INFO L124 PetriNetUnfolderBase]: 1980/3147 cut-off events. [2024-06-14 11:47:21,543 INFO L125 PetriNetUnfolderBase]: For 94422/94422 co-relation queries the response was YES. [2024-06-14 11:47:21,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17688 conditions, 3147 events. 1980/3147 cut-off events. For 94422/94422 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16654 event pairs, 644 based on Foata normal form. 4/3148 useless extension candidates. Maximal degree in co-relation 17641. Up to 2833 conditions per place. [2024-06-14 11:47:21,562 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 111 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2024-06-14 11:47:21,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 144 transitions, 1248 flow [2024-06-14 11:47:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:47:21,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:47:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-14 11:47:21,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-14 11:47:21,565 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 880 flow. Second operand 8 states and 164 transitions. [2024-06-14 11:47:21,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 144 transitions, 1248 flow [2024-06-14 11:47:21,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 144 transitions, 1112 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:21,621 INFO L231 Difference]: Finished difference. Result has 109 places, 120 transitions, 847 flow [2024-06-14 11:47:21,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=847, PETRI_PLACES=109, PETRI_TRANSITIONS=120} [2024-06-14 11:47:21,622 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-06-14 11:47:21,622 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 120 transitions, 847 flow [2024-06-14 11:47:21,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:21,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:21,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:21,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:47:21,622 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:21,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1973137069, now seen corresponding path program 1 times [2024-06-14 11:47:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:21,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927070771] [2024-06-14 11:47:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:21,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:22,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927070771] [2024-06-14 11:47:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927070771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:22,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:22,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:47:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528967429] [2024-06-14 11:47:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:22,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:47:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:47:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:47:22,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-06-14 11:47:22,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 120 transitions, 847 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-06-14 11:47:22,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:22,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-06-14 11:47:22,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:23,300 INFO L124 PetriNetUnfolderBase]: 1741/2926 cut-off events. [2024-06-14 11:47:23,300 INFO L125 PetriNetUnfolderBase]: For 97793/97793 co-relation queries the response was YES. [2024-06-14 11:47:23,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16963 conditions, 2926 events. 1741/2926 cut-off events. For 97793/97793 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16494 event pairs, 621 based on Foata normal form. 2/2925 useless extension candidates. Maximal degree in co-relation 16914. Up to 2482 conditions per place. [2024-06-14 11:47:23,319 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 88 selfloop transitions, 11 changer transitions 0/133 dead transitions. [2024-06-14 11:47:23,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 133 transitions, 1097 flow [2024-06-14 11:47:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:47:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:47:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-14 11:47:23,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 11:47:23,320 INFO L175 Difference]: Start difference. First operand has 109 places, 120 transitions, 847 flow. Second operand 6 states and 130 transitions. [2024-06-14 11:47:23,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 133 transitions, 1097 flow [2024-06-14 11:47:23,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 133 transitions, 1038 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:23,379 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 850 flow [2024-06-14 11:47:23,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2024-06-14 11:47:23,380 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2024-06-14 11:47:23,380 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 850 flow [2024-06-14 11:47:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-06-14 11:47:23,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:23,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:47:23,380 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)] === [2024-06-14 11:47:23,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2131871589, now seen corresponding path program 1 times [2024-06-14 11:47:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:23,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875925974] [2024-06-14 11:47:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:24,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875925974] [2024-06-14 11:47:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875925974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:24,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41868808] [2024-06-14 11:47:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:24,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:24,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:24,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 850 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) [2024-06-14 11:47:24,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:24,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:24,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:25,426 INFO L124 PetriNetUnfolderBase]: 2384/3597 cut-off events. [2024-06-14 11:47:25,427 INFO L125 PetriNetUnfolderBase]: For 122322/122322 co-relation queries the response was YES. [2024-06-14 11:47:25,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21529 conditions, 3597 events. 2384/3597 cut-off events. For 122322/122322 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17962 event pairs, 760 based on Foata normal form. 2/3596 useless extension candidates. Maximal degree in co-relation 21479. Up to 3442 conditions per place. [2024-06-14 11:47:25,449 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 140 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2024-06-14 11:47:25,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 1312 flow [2024-06-14 11:47:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-14 11:47:25,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419753086419753 [2024-06-14 11:47:25,451 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 850 flow. Second operand 9 states and 179 transitions. [2024-06-14 11:47:25,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 165 transitions, 1312 flow [2024-06-14 11:47:25,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 165 transitions, 1272 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:25,500 INFO L231 Difference]: Finished difference. Result has 115 places, 126 transitions, 906 flow [2024-06-14 11:47:25,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=906, PETRI_PLACES=115, PETRI_TRANSITIONS=126} [2024-06-14 11:47:25,500 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-06-14 11:47:25,501 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 126 transitions, 906 flow [2024-06-14 11:47:25,501 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) [2024-06-14 11:47:25,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:25,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:25,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:47:25,501 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)] === [2024-06-14 11:47:25,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:25,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2131866753, now seen corresponding path program 1 times [2024-06-14 11:47:25,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016401878] [2024-06-14 11:47:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016401878] [2024-06-14 11:47:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016401878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:26,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:26,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:26,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530412769] [2024-06-14 11:47:26,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:26,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:26,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:26,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:26,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 126 transitions, 906 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) [2024-06-14 11:47:26,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:26,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:27,479 INFO L124 PetriNetUnfolderBase]: 2406/3628 cut-off events. [2024-06-14 11:47:27,479 INFO L125 PetriNetUnfolderBase]: For 132131/132134 co-relation queries the response was YES. [2024-06-14 11:47:27,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22336 conditions, 3628 events. 2406/3628 cut-off events. For 132131/132134 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18174 event pairs, 679 based on Foata normal form. 4/3628 useless extension candidates. Maximal degree in co-relation 22285. Up to 3096 conditions per place. [2024-06-14 11:47:27,502 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 99 selfloop transitions, 70 changer transitions 0/174 dead transitions. [2024-06-14 11:47:27,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 174 transitions, 1552 flow [2024-06-14 11:47:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-14 11:47:27,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47160493827160493 [2024-06-14 11:47:27,503 INFO L175 Difference]: Start difference. First operand has 115 places, 126 transitions, 906 flow. Second operand 9 states and 191 transitions. [2024-06-14 11:47:27,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 174 transitions, 1552 flow [2024-06-14 11:47:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 174 transitions, 1480 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:27,580 INFO L231 Difference]: Finished difference. Result has 117 places, 132 transitions, 1072 flow [2024-06-14 11:47:27,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1072, PETRI_PLACES=117, PETRI_TRANSITIONS=132} [2024-06-14 11:47:27,581 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2024-06-14 11:47:27,581 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 132 transitions, 1072 flow [2024-06-14 11:47:27,581 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) [2024-06-14 11:47:27,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:27,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:27,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:47:27,581 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)] === [2024-06-14 11:47:27,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2131866939, now seen corresponding path program 2 times [2024-06-14 11:47:27,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:27,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461082418] [2024-06-14 11:47:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:27,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:28,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:28,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461082418] [2024-06-14 11:47:28,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461082418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:28,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:28,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179395689] [2024-06-14 11:47:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:28,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:28,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:28,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:28,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 132 transitions, 1072 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) [2024-06-14 11:47:28,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:28,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:28,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:29,604 INFO L124 PetriNetUnfolderBase]: 2417/3646 cut-off events. [2024-06-14 11:47:29,604 INFO L125 PetriNetUnfolderBase]: For 141663/141666 co-relation queries the response was YES. [2024-06-14 11:47:29,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23306 conditions, 3646 events. 2417/3646 cut-off events. For 141663/141666 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18239 event pairs, 742 based on Foata normal form. 4/3646 useless extension candidates. Maximal degree in co-relation 23254. Up to 3370 conditions per place. [2024-06-14 11:47:29,627 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 122 selfloop transitions, 49 changer transitions 0/176 dead transitions. [2024-06-14 11:47:29,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 176 transitions, 1726 flow [2024-06-14 11:47:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-14 11:47:29,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454320987654321 [2024-06-14 11:47:29,628 INFO L175 Difference]: Start difference. First operand has 117 places, 132 transitions, 1072 flow. Second operand 9 states and 184 transitions. [2024-06-14 11:47:29,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 176 transitions, 1726 flow [2024-06-14 11:47:29,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 176 transitions, 1611 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:29,713 INFO L231 Difference]: Finished difference. Result has 121 places, 138 transitions, 1169 flow [2024-06-14 11:47:29,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1169, PETRI_PLACES=121, PETRI_TRANSITIONS=138} [2024-06-14 11:47:29,713 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2024-06-14 11:47:29,713 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 138 transitions, 1169 flow [2024-06-14 11:47:29,713 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) [2024-06-14 11:47:29,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:29,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:47:29,714 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)] === [2024-06-14 11:47:29,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1101817121, now seen corresponding path program 2 times [2024-06-14 11:47:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798758344] [2024-06-14 11:47:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:30,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798758344] [2024-06-14 11:47:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798758344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:30,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:30,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810504168] [2024-06-14 11:47:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:30,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:30,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 138 transitions, 1169 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) [2024-06-14 11:47:30,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:30,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:30,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:31,743 INFO L124 PetriNetUnfolderBase]: 2471/3737 cut-off events. [2024-06-14 11:47:31,743 INFO L125 PetriNetUnfolderBase]: For 155321/155324 co-relation queries the response was YES. [2024-06-14 11:47:31,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24444 conditions, 3737 events. 2471/3737 cut-off events. For 155321/155324 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18878 event pairs, 683 based on Foata normal form. 4/3737 useless extension candidates. Maximal degree in co-relation 24390. Up to 3158 conditions per place. [2024-06-14 11:47:31,768 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 110 selfloop transitions, 70 changer transitions 0/185 dead transitions. [2024-06-14 11:47:31,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 185 transitions, 1949 flow [2024-06-14 11:47:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:31,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-14 11:47:31,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47160493827160493 [2024-06-14 11:47:31,770 INFO L175 Difference]: Start difference. First operand has 121 places, 138 transitions, 1169 flow. Second operand 9 states and 191 transitions. [2024-06-14 11:47:31,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 185 transitions, 1949 flow [2024-06-14 11:47:31,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 185 transitions, 1853 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:31,844 INFO L231 Difference]: Finished difference. Result has 125 places, 144 transitions, 1293 flow [2024-06-14 11:47:31,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1293, PETRI_PLACES=125, PETRI_TRANSITIONS=144} [2024-06-14 11:47:31,845 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 79 predicate places. [2024-06-14 11:47:31,845 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 144 transitions, 1293 flow [2024-06-14 11:47:31,845 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) [2024-06-14 11:47:31,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:31,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:31,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:47:31,845 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)] === [2024-06-14 11:47:31,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1268057411, now seen corresponding path program 3 times [2024-06-14 11:47:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:31,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512137742] [2024-06-14 11:47:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:31,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:32,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:32,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512137742] [2024-06-14 11:47:32,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512137742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:32,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:32,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:32,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572787737] [2024-06-14 11:47:32,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:32,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:32,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:32,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:32,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 144 transitions, 1293 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) [2024-06-14 11:47:32,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:32,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:32,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:33,869 INFO L124 PetriNetUnfolderBase]: 2461/3723 cut-off events. [2024-06-14 11:47:33,870 INFO L125 PetriNetUnfolderBase]: For 162689/162692 co-relation queries the response was YES. [2024-06-14 11:47:33,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24779 conditions, 3723 events. 2461/3723 cut-off events. For 162689/162692 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18824 event pairs, 681 based on Foata normal form. 4/3723 useless extension candidates. Maximal degree in co-relation 24723. Up to 3150 conditions per place. [2024-06-14 11:47:33,896 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 110 selfloop transitions, 69 changer transitions 0/184 dead transitions. [2024-06-14 11:47:33,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 184 transitions, 1883 flow [2024-06-14 11:47:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-14 11:47:33,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47160493827160493 [2024-06-14 11:47:33,897 INFO L175 Difference]: Start difference. First operand has 125 places, 144 transitions, 1293 flow. Second operand 9 states and 191 transitions. [2024-06-14 11:47:33,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 184 transitions, 1883 flow [2024-06-14 11:47:34,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 184 transitions, 1741 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:34,025 INFO L231 Difference]: Finished difference. Result has 129 places, 144 transitions, 1297 flow [2024-06-14 11:47:34,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1297, PETRI_PLACES=129, PETRI_TRANSITIONS=144} [2024-06-14 11:47:34,026 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2024-06-14 11:47:34,026 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 144 transitions, 1297 flow [2024-06-14 11:47:34,026 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) [2024-06-14 11:47:34,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:34,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:47:34,026 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:34,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1268057597, now seen corresponding path program 3 times [2024-06-14 11:47:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:34,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911003547] [2024-06-14 11:47:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:35,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911003547] [2024-06-14 11:47:35,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911003547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:35,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:35,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248324640] [2024-06-14 11:47:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:35,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:35,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:35,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 144 transitions, 1297 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) [2024-06-14 11:47:35,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:35,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:35,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:36,093 INFO L124 PetriNetUnfolderBase]: 2472/3731 cut-off events. [2024-06-14 11:47:36,093 INFO L125 PetriNetUnfolderBase]: For 170876/170879 co-relation queries the response was YES. [2024-06-14 11:47:36,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25136 conditions, 3731 events. 2472/3731 cut-off events. For 170876/170879 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18707 event pairs, 747 based on Foata normal form. 4/3731 useless extension candidates. Maximal degree in co-relation 25079. Up to 3446 conditions per place. [2024-06-14 11:47:36,116 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 127 selfloop transitions, 50 changer transitions 0/182 dead transitions. [2024-06-14 11:47:36,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 182 transitions, 1911 flow [2024-06-14 11:47:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-14 11:47:36,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44938271604938274 [2024-06-14 11:47:36,117 INFO L175 Difference]: Start difference. First operand has 129 places, 144 transitions, 1297 flow. Second operand 9 states and 182 transitions. [2024-06-14 11:47:36,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 182 transitions, 1911 flow [2024-06-14 11:47:36,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 182 transitions, 1795 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:36,237 INFO L231 Difference]: Finished difference. Result has 131 places, 147 transitions, 1333 flow [2024-06-14 11:47:36,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=131, PETRI_TRANSITIONS=147} [2024-06-14 11:47:36,237 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2024-06-14 11:47:36,237 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 147 transitions, 1333 flow [2024-06-14 11:47:36,237 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) [2024-06-14 11:47:36,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:36,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:47:36,237 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)] === [2024-06-14 11:47:36,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1095330371, now seen corresponding path program 4 times [2024-06-14 11:47:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:36,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140974442] [2024-06-14 11:47:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:37,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:37,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140974442] [2024-06-14 11:47:37,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140974442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:37,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:37,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:37,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441552835] [2024-06-14 11:47:37,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:37,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:37,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:37,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:37,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:37,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:37,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 147 transitions, 1333 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) [2024-06-14 11:47:37,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:37,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:37,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:38,319 INFO L124 PetriNetUnfolderBase]: 2526/3819 cut-off events. [2024-06-14 11:47:38,320 INFO L125 PetriNetUnfolderBase]: For 184684/184687 co-relation queries the response was YES. [2024-06-14 11:47:38,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25847 conditions, 3819 events. 2526/3819 cut-off events. For 184684/184687 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19396 event pairs, 703 based on Foata normal form. 4/3819 useless extension candidates. Maximal degree in co-relation 25789. Up to 3212 conditions per place. [2024-06-14 11:47:38,346 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 111 selfloop transitions, 75 changer transitions 0/191 dead transitions. [2024-06-14 11:47:38,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 191 transitions, 2153 flow [2024-06-14 11:47:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-14 11:47:38,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 11:47:38,347 INFO L175 Difference]: Start difference. First operand has 131 places, 147 transitions, 1333 flow. Second operand 9 states and 189 transitions. [2024-06-14 11:47:38,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 191 transitions, 2153 flow [2024-06-14 11:47:38,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 191 transitions, 2046 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:38,446 INFO L231 Difference]: Finished difference. Result has 134 places, 153 transitions, 1468 flow [2024-06-14 11:47:38,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1468, PETRI_PLACES=134, PETRI_TRANSITIONS=153} [2024-06-14 11:47:38,447 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 88 predicate places. [2024-06-14 11:47:38,447 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 153 transitions, 1468 flow [2024-06-14 11:47:38,447 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) [2024-06-14 11:47:38,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:38,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:47:38,447 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)] === [2024-06-14 11:47:38,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:38,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1095567521, now seen corresponding path program 5 times [2024-06-14 11:47:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:38,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963975780] [2024-06-14 11:47:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:38,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:39,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963975780] [2024-06-14 11:47:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963975780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:39,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:39,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219466770] [2024-06-14 11:47:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:39,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:39,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:39,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:39,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 153 transitions, 1468 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) [2024-06-14 11:47:39,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:39,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:39,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:40,531 INFO L124 PetriNetUnfolderBase]: 2548/3851 cut-off events. [2024-06-14 11:47:40,531 INFO L125 PetriNetUnfolderBase]: For 195795/195798 co-relation queries the response was YES. [2024-06-14 11:47:40,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26474 conditions, 3851 events. 2548/3851 cut-off events. For 195795/195798 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19488 event pairs, 701 based on Foata normal form. 4/3851 useless extension candidates. Maximal degree in co-relation 26415. Up to 3231 conditions per place. [2024-06-14 11:47:40,561 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 114 selfloop transitions, 76 changer transitions 0/195 dead transitions. [2024-06-14 11:47:40,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 195 transitions, 2272 flow [2024-06-14 11:47:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:40,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-14 11:47:40,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47160493827160493 [2024-06-14 11:47:40,562 INFO L175 Difference]: Start difference. First operand has 134 places, 153 transitions, 1468 flow. Second operand 9 states and 191 transitions. [2024-06-14 11:47:40,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 195 transitions, 2272 flow [2024-06-14 11:47:40,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 195 transitions, 2144 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:40,712 INFO L231 Difference]: Finished difference. Result has 138 places, 156 transitions, 1548 flow [2024-06-14 11:47:40,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1548, PETRI_PLACES=138, PETRI_TRANSITIONS=156} [2024-06-14 11:47:40,713 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 92 predicate places. [2024-06-14 11:47:40,713 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 156 transitions, 1548 flow [2024-06-14 11:47:40,713 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) [2024-06-14 11:47:40,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:40,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:40,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:47:40,713 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)] === [2024-06-14 11:47:40,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1095561011, now seen corresponding path program 6 times [2024-06-14 11:47:40,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:40,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969414369] [2024-06-14 11:47:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:41,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969414369] [2024-06-14 11:47:41,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969414369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012205147] [2024-06-14 11:47:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:41,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:41,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 156 transitions, 1548 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) [2024-06-14 11:47:41,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:41,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:41,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:42,823 INFO L124 PetriNetUnfolderBase]: 2538/3832 cut-off events. [2024-06-14 11:47:42,823 INFO L125 PetriNetUnfolderBase]: For 203912/203915 co-relation queries the response was YES. [2024-06-14 11:47:42,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26550 conditions, 3832 events. 2538/3832 cut-off events. For 203912/203915 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19375 event pairs, 689 based on Foata normal form. 4/3832 useless extension candidates. Maximal degree in co-relation 26490. Up to 3223 conditions per place. [2024-06-14 11:47:42,850 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 113 selfloop transitions, 75 changer transitions 0/193 dead transitions. [2024-06-14 11:47:42,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 193 transitions, 2164 flow [2024-06-14 11:47:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-14 11:47:42,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-14 11:47:42,852 INFO L175 Difference]: Start difference. First operand has 138 places, 156 transitions, 1548 flow. Second operand 9 states and 190 transitions. [2024-06-14 11:47:42,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 193 transitions, 2164 flow [2024-06-14 11:47:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 193 transitions, 1988 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:42,993 INFO L231 Difference]: Finished difference. Result has 141 places, 156 transitions, 1530 flow [2024-06-14 11:47:42,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1530, PETRI_PLACES=141, PETRI_TRANSITIONS=156} [2024-06-14 11:47:42,993 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 95 predicate places. [2024-06-14 11:47:42,994 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 156 transitions, 1530 flow [2024-06-14 11:47:42,994 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) [2024-06-14 11:47:42,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:42,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:42,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:47:42,994 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)] === [2024-06-14 11:47:42,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1095567707, now seen corresponding path program 4 times [2024-06-14 11:47:42,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:42,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817672955] [2024-06-14 11:47:42,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:42,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:43,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:43,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817672955] [2024-06-14 11:47:43,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817672955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:43,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:43,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:43,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290203011] [2024-06-14 11:47:43,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:43,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:43,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:44,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:44,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 156 transitions, 1530 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) [2024-06-14 11:47:44,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:44,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:44,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:45,007 INFO L124 PetriNetUnfolderBase]: 2549/3858 cut-off events. [2024-06-14 11:47:45,007 INFO L125 PetriNetUnfolderBase]: For 213119/213122 co-relation queries the response was YES. [2024-06-14 11:47:45,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26905 conditions, 3858 events. 2549/3858 cut-off events. For 213119/213122 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19481 event pairs, 750 based on Foata normal form. 4/3858 useless extension candidates. Maximal degree in co-relation 26844. Up to 3554 conditions per place. [2024-06-14 11:47:45,040 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 134 selfloop transitions, 52 changer transitions 0/191 dead transitions. [2024-06-14 11:47:45,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 191 transitions, 2173 flow [2024-06-14 11:47:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-14 11:47:45,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:47:45,041 INFO L175 Difference]: Start difference. First operand has 141 places, 156 transitions, 1530 flow. Second operand 9 states and 180 transitions. [2024-06-14 11:47:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 191 transitions, 2173 flow [2024-06-14 11:47:45,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 191 transitions, 1987 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:45,219 INFO L231 Difference]: Finished difference. Result has 141 places, 159 transitions, 1503 flow [2024-06-14 11:47:45,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1503, PETRI_PLACES=141, PETRI_TRANSITIONS=159} [2024-06-14 11:47:45,219 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 95 predicate places. [2024-06-14 11:47:45,219 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 159 transitions, 1503 flow [2024-06-14 11:47:45,219 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) [2024-06-14 11:47:45,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:45,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:45,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:47:45,220 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:45,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:45,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1023407281, now seen corresponding path program 1 times [2024-06-14 11:47:45,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:45,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208022357] [2024-06-14 11:47:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:45,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:45,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208022357] [2024-06-14 11:47:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208022357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:45,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:47:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088305395] [2024-06-14 11:47:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:45,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:47:45,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:45,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:47:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:47:46,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:47:46,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 159 transitions, 1503 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) [2024-06-14 11:47:46,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:46,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:47:46,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:46,668 INFO L124 PetriNetUnfolderBase]: 2092/3392 cut-off events. [2024-06-14 11:47:46,668 INFO L125 PetriNetUnfolderBase]: For 220753/220753 co-relation queries the response was YES. [2024-06-14 11:47:46,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24558 conditions, 3392 events. 2092/3392 cut-off events. For 220753/220753 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18863 event pairs, 702 based on Foata normal form. 1/3384 useless extension candidates. Maximal degree in co-relation 24496. Up to 2947 conditions per place. [2024-06-14 11:47:46,699 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 121 selfloop transitions, 11 changer transitions 0/177 dead transitions. [2024-06-14 11:47:46,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 177 transitions, 1833 flow [2024-06-14 11:47:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:47:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:47:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-14 11:47:46,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-14 11:47:46,701 INFO L175 Difference]: Start difference. First operand has 141 places, 159 transitions, 1503 flow. Second operand 6 states and 130 transitions. [2024-06-14 11:47:46,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 177 transitions, 1833 flow [2024-06-14 11:47:46,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 177 transitions, 1721 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:46,869 INFO L231 Difference]: Finished difference. Result has 141 places, 162 transitions, 1453 flow [2024-06-14 11:47:46,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1453, PETRI_PLACES=141, PETRI_TRANSITIONS=162} [2024-06-14 11:47:46,870 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 95 predicate places. [2024-06-14 11:47:46,870 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 162 transitions, 1453 flow [2024-06-14 11:47:46,870 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) [2024-06-14 11:47:46,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:46,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:46,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:47:46,870 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)] === [2024-06-14 11:47:46,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash -7655059, now seen corresponding path program 7 times [2024-06-14 11:47:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:46,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128339374] [2024-06-14 11:47:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:46,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:47,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128339374] [2024-06-14 11:47:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128339374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:47,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427066046] [2024-06-14 11:47:47,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:47,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:47,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:47,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:47,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 162 transitions, 1453 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) [2024-06-14 11:47:47,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:47,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:47,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:49,071 INFO L124 PetriNetUnfolderBase]: 2576/3905 cut-off events. [2024-06-14 11:47:49,071 INFO L125 PetriNetUnfolderBase]: For 235146/235155 co-relation queries the response was YES. [2024-06-14 11:47:49,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27642 conditions, 3905 events. 2576/3905 cut-off events. For 235146/235155 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19860 event pairs, 719 based on Foata normal form. 7/3905 useless extension candidates. Maximal degree in co-relation 27579. Up to 3265 conditions per place. [2024-06-14 11:47:49,099 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 109 selfloop transitions, 84 changer transitions 0/198 dead transitions. [2024-06-14 11:47:49,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 198 transitions, 2122 flow [2024-06-14 11:47:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-14 11:47:49,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44938271604938274 [2024-06-14 11:47:49,100 INFO L175 Difference]: Start difference. First operand has 141 places, 162 transitions, 1453 flow. Second operand 9 states and 182 transitions. [2024-06-14 11:47:49,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 198 transitions, 2122 flow [2024-06-14 11:47:49,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 198 transitions, 2082 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:49,255 INFO L231 Difference]: Finished difference. Result has 146 places, 165 transitions, 1634 flow [2024-06-14 11:47:49,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1634, PETRI_PLACES=146, PETRI_TRANSITIONS=165} [2024-06-14 11:47:49,256 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 100 predicate places. [2024-06-14 11:47:49,256 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 165 transitions, 1634 flow [2024-06-14 11:47:49,256 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) [2024-06-14 11:47:49,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:49,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:49,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:47:49,256 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)] === [2024-06-14 11:47:49,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash -15698629, now seen corresponding path program 8 times [2024-06-14 11:47:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580154619] [2024-06-14 11:47:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:49,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580154619] [2024-06-14 11:47:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580154619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631130955] [2024-06-14 11:47:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:50,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:50,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:50,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 165 transitions, 1634 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) [2024-06-14 11:47:50,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:50,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:50,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:51,421 INFO L124 PetriNetUnfolderBase]: 2598/3942 cut-off events. [2024-06-14 11:47:51,421 INFO L125 PetriNetUnfolderBase]: For 248228/248237 co-relation queries the response was YES. [2024-06-14 11:47:51,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28477 conditions, 3942 events. 2598/3942 cut-off events. For 248228/248237 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20083 event pairs, 724 based on Foata normal form. 7/3942 useless extension candidates. Maximal degree in co-relation 28413. Up to 3284 conditions per place. [2024-06-14 11:47:51,459 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 116 selfloop transitions, 81 changer transitions 0/202 dead transitions. [2024-06-14 11:47:51,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 202 transitions, 2325 flow [2024-06-14 11:47:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-14 11:47:51,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-14 11:47:51,460 INFO L175 Difference]: Start difference. First operand has 146 places, 165 transitions, 1634 flow. Second operand 9 states and 186 transitions. [2024-06-14 11:47:51,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 202 transitions, 2325 flow [2024-06-14 11:47:51,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 202 transitions, 2176 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:51,684 INFO L231 Difference]: Finished difference. Result has 149 places, 168 transitions, 1706 flow [2024-06-14 11:47:51,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1706, PETRI_PLACES=149, PETRI_TRANSITIONS=168} [2024-06-14 11:47:51,685 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 103 predicate places. [2024-06-14 11:47:51,685 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 168 transitions, 1706 flow [2024-06-14 11:47:51,685 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) [2024-06-14 11:47:51,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:51,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:51,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:47:51,685 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:51,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1764306739, now seen corresponding path program 9 times [2024-06-14 11:47:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:51,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97869531] [2024-06-14 11:47:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:52,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:52,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97869531] [2024-06-14 11:47:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97869531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:52,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:52,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352651694] [2024-06-14 11:47:52,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:52,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:52,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:52,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:52,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:52,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:52,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 168 transitions, 1706 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) [2024-06-14 11:47:52,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:52,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:52,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:53,767 INFO L124 PetriNetUnfolderBase]: 2620/3969 cut-off events. [2024-06-14 11:47:53,767 INFO L125 PetriNetUnfolderBase]: For 260827/260836 co-relation queries the response was YES. [2024-06-14 11:47:53,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28879 conditions, 3969 events. 2620/3969 cut-off events. For 260827/260836 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20212 event pairs, 709 based on Foata normal form. 7/3969 useless extension candidates. Maximal degree in co-relation 28814. Up to 3303 conditions per place. [2024-06-14 11:47:53,798 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 115 selfloop transitions, 85 changer transitions 0/205 dead transitions. [2024-06-14 11:47:53,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 205 transitions, 2406 flow [2024-06-14 11:47:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-14 11:47:53,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-14 11:47:53,799 INFO L175 Difference]: Start difference. First operand has 149 places, 168 transitions, 1706 flow. Second operand 9 states and 185 transitions. [2024-06-14 11:47:53,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 205 transitions, 2406 flow [2024-06-14 11:47:54,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 205 transitions, 2143 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:54,061 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 1671 flow [2024-06-14 11:47:54,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1671, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2024-06-14 11:47:54,061 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2024-06-14 11:47:54,061 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 1671 flow [2024-06-14 11:47:54,061 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) [2024-06-14 11:47:54,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:54,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:54,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:47:54,062 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:54,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:54,063 INFO L85 PathProgramCache]: Analyzing trace with hash -15935779, now seen corresponding path program 10 times [2024-06-14 11:47:54,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:54,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995801940] [2024-06-14 11:47:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995801940] [2024-06-14 11:47:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995801940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:55,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:55,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14164185] [2024-06-14 11:47:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:55,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:55,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:55,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 1671 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) [2024-06-14 11:47:55,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:55,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:55,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:56,185 INFO L124 PetriNetUnfolderBase]: 2610/3955 cut-off events. [2024-06-14 11:47:56,185 INFO L125 PetriNetUnfolderBase]: For 267904/267913 co-relation queries the response was YES. [2024-06-14 11:47:56,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28886 conditions, 3955 events. 2610/3955 cut-off events. For 267904/267913 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20098 event pairs, 707 based on Foata normal form. 7/3955 useless extension candidates. Maximal degree in co-relation 28820. Up to 3295 conditions per place. [2024-06-14 11:47:56,218 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 111 selfloop transitions, 87 changer transitions 0/203 dead transitions. [2024-06-14 11:47:56,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 203 transitions, 2155 flow [2024-06-14 11:47:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-14 11:47:56,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44938271604938274 [2024-06-14 11:47:56,219 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 1671 flow. Second operand 9 states and 182 transitions. [2024-06-14 11:47:56,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 203 transitions, 2155 flow [2024-06-14 11:47:56,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 203 transitions, 1847 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:56,420 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 1545 flow [2024-06-14 11:47:56,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1545, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2024-06-14 11:47:56,421 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2024-06-14 11:47:56,421 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 1545 flow [2024-06-14 11:47:56,421 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) [2024-06-14 11:47:56,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:56,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:47:56,422 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:56,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1764313435, now seen corresponding path program 5 times [2024-06-14 11:47:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129502306] [2024-06-14 11:47:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129502306] [2024-06-14 11:47:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129502306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:57,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:57,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975462679] [2024-06-14 11:47:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:57,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:57,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:47:57,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 1545 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) [2024-06-14 11:47:57,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:57,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:47:57,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:58,559 INFO L124 PetriNetUnfolderBase]: 2605/3947 cut-off events. [2024-06-14 11:47:58,559 INFO L125 PetriNetUnfolderBase]: For 274786/274792 co-relation queries the response was YES. [2024-06-14 11:47:58,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28919 conditions, 3947 events. 2605/3947 cut-off events. For 274786/274792 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20003 event pairs, 783 based on Foata normal form. 3/3941 useless extension candidates. Maximal degree in co-relation 28852. Up to 3638 conditions per place. [2024-06-14 11:47:58,593 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 141 selfloop transitions, 52 changer transitions 0/198 dead transitions. [2024-06-14 11:47:58,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 198 transitions, 1999 flow [2024-06-14 11:47:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-14 11:47:58,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-14 11:47:58,594 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 1545 flow. Second operand 9 states and 175 transitions. [2024-06-14 11:47:58,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 198 transitions, 1999 flow [2024-06-14 11:47:58,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 198 transitions, 1753 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:58,827 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 1411 flow [2024-06-14 11:47:58,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1411, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2024-06-14 11:47:58,828 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2024-06-14 11:47:58,828 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 1411 flow [2024-06-14 11:47:58,828 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) [2024-06-14 11:47:58,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:58,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:58,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:47:58,828 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:47:58,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1037692081, now seen corresponding path program 2 times [2024-06-14 11:47:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618259324] [2024-06-14 11:47:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:59,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:59,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618259324] [2024-06-14 11:47:59,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618259324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:59,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:59,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:47:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524472348] [2024-06-14 11:47:59,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:59,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:47:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:47:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:47:59,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:47:59,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 1411 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) [2024-06-14 11:47:59,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:59,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:47:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:00,343 INFO L124 PetriNetUnfolderBase]: 2109/3434 cut-off events. [2024-06-14 11:48:00,344 INFO L125 PetriNetUnfolderBase]: For 282512/282521 co-relation queries the response was YES. [2024-06-14 11:48:00,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26199 conditions, 3434 events. 2109/3434 cut-off events. For 282512/282521 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19244 event pairs, 707 based on Foata normal form. 7/3428 useless extension candidates. Maximal degree in co-relation 26131. Up to 2958 conditions per place. [2024-06-14 11:48:00,374 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 119 selfloop transitions, 16 changer transitions 0/183 dead transitions. [2024-06-14 11:48:00,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 183 transitions, 1737 flow [2024-06-14 11:48:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:48:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:48:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-14 11:48:00,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 11:48:00,375 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 1411 flow. Second operand 6 states and 126 transitions. [2024-06-14 11:48:00,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 183 transitions, 1737 flow [2024-06-14 11:48:00,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 183 transitions, 1559 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:00,547 INFO L231 Difference]: Finished difference. Result has 146 places, 174 transitions, 1311 flow [2024-06-14 11:48:00,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1311, PETRI_PLACES=146, PETRI_TRANSITIONS=174} [2024-06-14 11:48:00,547 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 100 predicate places. [2024-06-14 11:48:00,548 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 174 transitions, 1311 flow [2024-06-14 11:48:00,548 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) [2024-06-14 11:48:00,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:00,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:00,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:48:00,548 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:00,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash -676440465, now seen corresponding path program 1 times [2024-06-14 11:48:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:00,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973536981] [2024-06-14 11:48:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:00,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:01,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:01,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973536981] [2024-06-14 11:48:01,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973536981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:01,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:01,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:48:01,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695429775] [2024-06-14 11:48:01,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:01,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:48:01,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:01,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:48:01,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:48:01,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:48:01,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 174 transitions, 1311 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) [2024-06-14 11:48:01,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:01,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:48:01,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:02,010 INFO L124 PetriNetUnfolderBase]: 2147/3451 cut-off events. [2024-06-14 11:48:02,010 INFO L125 PetriNetUnfolderBase]: For 250567/250567 co-relation queries the response was YES. [2024-06-14 11:48:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25143 conditions, 3451 events. 2147/3451 cut-off events. For 250567/250567 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 18657 event pairs, 621 based on Foata normal form. 1/3421 useless extension candidates. Maximal degree in co-relation 25074. Up to 3121 conditions per place. [2024-06-14 11:48:02,039 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 161 selfloop transitions, 11 changer transitions 0/189 dead transitions. [2024-06-14 11:48:02,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 189 transitions, 1721 flow [2024-06-14 11:48:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:48:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:48:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-14 11:48:02,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-14 11:48:02,040 INFO L175 Difference]: Start difference. First operand has 146 places, 174 transitions, 1311 flow. Second operand 6 states and 122 transitions. [2024-06-14 11:48:02,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 189 transitions, 1721 flow [2024-06-14 11:48:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 189 transitions, 1665 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 11:48:02,177 INFO L231 Difference]: Finished difference. Result has 148 places, 177 transitions, 1325 flow [2024-06-14 11:48:02,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1325, PETRI_PLACES=148, PETRI_TRANSITIONS=177} [2024-06-14 11:48:02,178 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 102 predicate places. [2024-06-14 11:48:02,178 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 177 transitions, 1325 flow [2024-06-14 11:48:02,178 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) [2024-06-14 11:48:02,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:02,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:02,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:48:02,178 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:02,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:02,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1037700017, now seen corresponding path program 2 times [2024-06-14 11:48:02,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:02,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786894118] [2024-06-14 11:48:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:02,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786894118] [2024-06-14 11:48:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786894118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:03,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:48:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700064181] [2024-06-14 11:48:03,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:03,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:48:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:48:03,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:48:03,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:48:03,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 177 transitions, 1325 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) [2024-06-14 11:48:03,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:03,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:48:03,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:03,619 INFO L124 PetriNetUnfolderBase]: 2144/3448 cut-off events. [2024-06-14 11:48:03,620 INFO L125 PetriNetUnfolderBase]: For 258966/258969 co-relation queries the response was YES. [2024-06-14 11:48:03,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25592 conditions, 3448 events. 2144/3448 cut-off events. For 258966/258969 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 18738 event pairs, 625 based on Foata normal form. 3/3419 useless extension candidates. Maximal degree in co-relation 25522. Up to 3111 conditions per place. [2024-06-14 11:48:03,647 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 156 selfloop transitions, 16 changer transitions 0/189 dead transitions. [2024-06-14 11:48:03,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 189 transitions, 1733 flow [2024-06-14 11:48:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:48:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:48:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-14 11:48:03,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2024-06-14 11:48:03,648 INFO L175 Difference]: Start difference. First operand has 148 places, 177 transitions, 1325 flow. Second operand 6 states and 121 transitions. [2024-06-14 11:48:03,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 189 transitions, 1733 flow [2024-06-14 11:48:03,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 189 transitions, 1685 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-14 11:48:03,814 INFO L231 Difference]: Finished difference. Result has 150 places, 180 transitions, 1363 flow [2024-06-14 11:48:03,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1363, PETRI_PLACES=150, PETRI_TRANSITIONS=180} [2024-06-14 11:48:03,814 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2024-06-14 11:48:03,814 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 180 transitions, 1363 flow [2024-06-14 11:48:03,814 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) [2024-06-14 11:48:03,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:03,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:48:03,815 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)] === [2024-06-14 11:48:03,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1663508537, now seen corresponding path program 1 times [2024-06-14 11:48:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461193587] [2024-06-14 11:48:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:04,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461193587] [2024-06-14 11:48:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461193587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:04,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:04,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672021108] [2024-06-14 11:48:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:04,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:04,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:05,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:05,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 180 transitions, 1363 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) [2024-06-14 11:48:05,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:05,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:06,044 INFO L124 PetriNetUnfolderBase]: 2626/3992 cut-off events. [2024-06-14 11:48:06,044 INFO L125 PetriNetUnfolderBase]: For 322121/322121 co-relation queries the response was YES. [2024-06-14 11:48:06,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30567 conditions, 3992 events. 2626/3992 cut-off events. For 322121/322121 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 20446 event pairs, 757 based on Foata normal form. 4/3993 useless extension candidates. Maximal degree in co-relation 30496. Up to 3777 conditions per place. [2024-06-14 11:48:06,075 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 199 selfloop transitions, 23 changer transitions 0/227 dead transitions. [2024-06-14 11:48:06,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 227 transitions, 1973 flow [2024-06-14 11:48:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:06,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-14 11:48:06,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43777777777777777 [2024-06-14 11:48:06,077 INFO L175 Difference]: Start difference. First operand has 150 places, 180 transitions, 1363 flow. Second operand 10 states and 197 transitions. [2024-06-14 11:48:06,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 227 transitions, 1973 flow [2024-06-14 11:48:06,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 227 transitions, 1909 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 11:48:06,321 INFO L231 Difference]: Finished difference. Result has 156 places, 183 transitions, 1411 flow [2024-06-14 11:48:06,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1411, PETRI_PLACES=156, PETRI_TRANSITIONS=183} [2024-06-14 11:48:06,321 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 110 predicate places. [2024-06-14 11:48:06,321 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 183 transitions, 1411 flow [2024-06-14 11:48:06,321 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) [2024-06-14 11:48:06,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:06,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:06,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:48:06,322 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)] === [2024-06-14 11:48:06,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash 197844523, now seen corresponding path program 2 times [2024-06-14 11:48:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:06,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750786115] [2024-06-14 11:48:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:06,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750786115] [2024-06-14 11:48:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750786115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828632251] [2024-06-14 11:48:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:07,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:07,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:07,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 183 transitions, 1411 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) [2024-06-14 11:48:07,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:07,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:07,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:08,817 INFO L124 PetriNetUnfolderBase]: 2680/4079 cut-off events. [2024-06-14 11:48:08,817 INFO L125 PetriNetUnfolderBase]: For 341190/341193 co-relation queries the response was YES. [2024-06-14 11:48:08,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31939 conditions, 4079 events. 2680/4079 cut-off events. For 341190/341193 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21052 event pairs, 649 based on Foata normal form. 4/4079 useless extension candidates. Maximal degree in co-relation 31867. Up to 3148 conditions per place. [2024-06-14 11:48:08,849 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 129 selfloop transitions, 107 changer transitions 0/241 dead transitions. [2024-06-14 11:48:08,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 241 transitions, 2547 flow [2024-06-14 11:48:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-14 11:48:08,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47555555555555556 [2024-06-14 11:48:08,851 INFO L175 Difference]: Start difference. First operand has 156 places, 183 transitions, 1411 flow. Second operand 10 states and 214 transitions. [2024-06-14 11:48:08,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 241 transitions, 2547 flow [2024-06-14 11:48:09,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 241 transitions, 2459 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:09,263 INFO L231 Difference]: Finished difference. Result has 158 places, 192 transitions, 1725 flow [2024-06-14 11:48:09,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1725, PETRI_PLACES=158, PETRI_TRANSITIONS=192} [2024-06-14 11:48:09,264 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 112 predicate places. [2024-06-14 11:48:09,264 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 192 transitions, 1725 flow [2024-06-14 11:48:09,264 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) [2024-06-14 11:48:09,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:09,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:48:09,264 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)] === [2024-06-14 11:48:09,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -798969091, now seen corresponding path program 3 times [2024-06-14 11:48:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:09,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467502420] [2024-06-14 11:48:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:10,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:10,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467502420] [2024-06-14 11:48:10,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467502420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:10,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:10,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:10,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579379044] [2024-06-14 11:48:10,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:10,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:10,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:10,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 192 transitions, 1725 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) [2024-06-14 11:48:10,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:10,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:10,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:11,685 INFO L124 PetriNetUnfolderBase]: 2670/4065 cut-off events. [2024-06-14 11:48:11,685 INFO L125 PetriNetUnfolderBase]: For 353619/353622 co-relation queries the response was YES. [2024-06-14 11:48:11,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32602 conditions, 4065 events. 2670/4065 cut-off events. For 353619/353622 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 20961 event pairs, 647 based on Foata normal form. 4/4065 useless extension candidates. Maximal degree in co-relation 32529. Up to 3140 conditions per place. [2024-06-14 11:48:11,720 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 129 selfloop transitions, 106 changer transitions 0/240 dead transitions. [2024-06-14 11:48:11,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 240 transitions, 2509 flow [2024-06-14 11:48:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-14 11:48:11,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47555555555555556 [2024-06-14 11:48:11,722 INFO L175 Difference]: Start difference. First operand has 158 places, 192 transitions, 1725 flow. Second operand 10 states and 214 transitions. [2024-06-14 11:48:11,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 240 transitions, 2509 flow [2024-06-14 11:48:12,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 240 transitions, 2330 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-14 11:48:12,041 INFO L231 Difference]: Finished difference. Result has 163 places, 192 transitions, 1766 flow [2024-06-14 11:48:12,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1766, PETRI_PLACES=163, PETRI_TRANSITIONS=192} [2024-06-14 11:48:12,041 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 117 predicate places. [2024-06-14 11:48:12,041 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 192 transitions, 1766 flow [2024-06-14 11:48:12,042 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) [2024-06-14 11:48:12,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:12,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:12,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:48:12,042 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)] === [2024-06-14 11:48:12,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash -654871171, now seen corresponding path program 4 times [2024-06-14 11:48:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:12,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69246100] [2024-06-14 11:48:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:12,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:13,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:13,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69246100] [2024-06-14 11:48:13,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69246100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:13,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:13,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:13,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537908018] [2024-06-14 11:48:13,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:13,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:13,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:13,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:13,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:13,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:13,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 192 transitions, 1766 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) [2024-06-14 11:48:13,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:13,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:13,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:14,637 INFO L124 PetriNetUnfolderBase]: 2724/4158 cut-off events. [2024-06-14 11:48:14,637 INFO L125 PetriNetUnfolderBase]: For 371988/371991 co-relation queries the response was YES. [2024-06-14 11:48:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33806 conditions, 4158 events. 2724/4158 cut-off events. For 371988/371991 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 21639 event pairs, 664 based on Foata normal form. 4/4158 useless extension candidates. Maximal degree in co-relation 33731. Up to 3186 conditions per place. [2024-06-14 11:48:14,673 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 131 selfloop transitions, 108 changer transitions 0/244 dead transitions. [2024-06-14 11:48:14,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 244 transitions, 2858 flow [2024-06-14 11:48:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-14 11:48:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2024-06-14 11:48:14,674 INFO L175 Difference]: Start difference. First operand has 163 places, 192 transitions, 1766 flow. Second operand 10 states and 212 transitions. [2024-06-14 11:48:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 244 transitions, 2858 flow [2024-06-14 11:48:15,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 244 transitions, 2667 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:15,063 INFO L231 Difference]: Finished difference. Result has 165 places, 198 transitions, 1915 flow [2024-06-14 11:48:15,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1915, PETRI_PLACES=165, PETRI_TRANSITIONS=198} [2024-06-14 11:48:15,063 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 119 predicate places. [2024-06-14 11:48:15,063 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 198 transitions, 1915 flow [2024-06-14 11:48:15,064 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) [2024-06-14 11:48:15,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:15,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:15,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:48:15,064 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:15,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash -655078561, now seen corresponding path program 5 times [2024-06-14 11:48:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569608399] [2024-06-14 11:48:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569608399] [2024-06-14 11:48:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569608399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:16,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293993891] [2024-06-14 11:48:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:16,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:16,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:16,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 198 transitions, 1915 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) [2024-06-14 11:48:16,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:16,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:16,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:17,420 INFO L124 PetriNetUnfolderBase]: 2746/4195 cut-off events. [2024-06-14 11:48:17,421 INFO L125 PetriNetUnfolderBase]: For 387638/387641 co-relation queries the response was YES. [2024-06-14 11:48:17,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34336 conditions, 4195 events. 2746/4195 cut-off events. For 387638/387641 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21904 event pairs, 662 based on Foata normal form. 4/4195 useless extension candidates. Maximal degree in co-relation 34260. Up to 3205 conditions per place. [2024-06-14 11:48:17,455 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 134 selfloop transitions, 109 changer transitions 0/248 dead transitions. [2024-06-14 11:48:17,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 248 transitions, 2972 flow [2024-06-14 11:48:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-14 11:48:17,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47555555555555556 [2024-06-14 11:48:17,457 INFO L175 Difference]: Start difference. First operand has 165 places, 198 transitions, 1915 flow. Second operand 10 states and 214 transitions. [2024-06-14 11:48:17,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 248 transitions, 2972 flow [2024-06-14 11:48:17,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 248 transitions, 2778 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:17,857 INFO L231 Difference]: Finished difference. Result has 169 places, 201 transitions, 2008 flow [2024-06-14 11:48:17,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2008, PETRI_PLACES=169, PETRI_TRANSITIONS=201} [2024-06-14 11:48:17,857 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-06-14 11:48:17,857 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 201 transitions, 2008 flow [2024-06-14 11:48:17,857 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) [2024-06-14 11:48:17,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:17,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:17,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:48:17,858 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)] === [2024-06-14 11:48:17,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash -655072981, now seen corresponding path program 6 times [2024-06-14 11:48:17,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:17,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225609031] [2024-06-14 11:48:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:17,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:18,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:18,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225609031] [2024-06-14 11:48:18,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225609031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:18,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:18,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616480040] [2024-06-14 11:48:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:18,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:19,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:19,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 201 transitions, 2008 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) [2024-06-14 11:48:19,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:19,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:19,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:20,191 INFO L124 PetriNetUnfolderBase]: 2736/4186 cut-off events. [2024-06-14 11:48:20,191 INFO L125 PetriNetUnfolderBase]: For 397541/397544 co-relation queries the response was YES. [2024-06-14 11:48:20,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34301 conditions, 4186 events. 2736/4186 cut-off events. For 397541/397544 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21884 event pairs, 662 based on Foata normal form. 4/4186 useless extension candidates. Maximal degree in co-relation 34224. Up to 3197 conditions per place. [2024-06-14 11:48:20,229 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 133 selfloop transitions, 108 changer transitions 0/246 dead transitions. [2024-06-14 11:48:20,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 246 transitions, 2808 flow [2024-06-14 11:48:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-14 11:48:20,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-14 11:48:20,230 INFO L175 Difference]: Start difference. First operand has 169 places, 201 transitions, 2008 flow. Second operand 10 states and 213 transitions. [2024-06-14 11:48:20,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 246 transitions, 2808 flow [2024-06-14 11:48:20,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 246 transitions, 2538 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:20,722 INFO L231 Difference]: Finished difference. Result has 172 places, 201 transitions, 1962 flow [2024-06-14 11:48:20,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1962, PETRI_PLACES=172, PETRI_TRANSITIONS=201} [2024-06-14 11:48:20,722 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 126 predicate places. [2024-06-14 11:48:20,722 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 201 transitions, 1962 flow [2024-06-14 11:48:20,722 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) [2024-06-14 11:48:20,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:20,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:20,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:48:20,723 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:20,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1660468283, now seen corresponding path program 1 times [2024-06-14 11:48:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:20,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365212776] [2024-06-14 11:48:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:20,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:21,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:21,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365212776] [2024-06-14 11:48:21,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365212776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:21,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:21,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:48:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518589725] [2024-06-14 11:48:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:21,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:48:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:21,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:48:21,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:48:21,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:48:21,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 201 transitions, 1962 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) [2024-06-14 11:48:21,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:21,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:48:21,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:22,380 INFO L124 PetriNetUnfolderBase]: 2423/3854 cut-off events. [2024-06-14 11:48:22,380 INFO L125 PetriNetUnfolderBase]: For 405883/405883 co-relation queries the response was YES. [2024-06-14 11:48:22,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32637 conditions, 3854 events. 2423/3854 cut-off events. For 405883/405883 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 21201 event pairs, 724 based on Foata normal form. 1/3838 useless extension candidates. Maximal degree in co-relation 32559. Up to 3401 conditions per place. [2024-06-14 11:48:22,416 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 173 selfloop transitions, 14 changer transitions 0/226 dead transitions. [2024-06-14 11:48:22,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 226 transitions, 2432 flow [2024-06-14 11:48:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:48:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:48:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-14 11:48:22,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 11:48:22,417 INFO L175 Difference]: Start difference. First operand has 172 places, 201 transitions, 1962 flow. Second operand 7 states and 147 transitions. [2024-06-14 11:48:22,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 226 transitions, 2432 flow [2024-06-14 11:48:22,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 226 transitions, 2180 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:22,780 INFO L231 Difference]: Finished difference. Result has 169 places, 204 transitions, 1790 flow [2024-06-14 11:48:22,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=162, 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=1790, PETRI_PLACES=169, PETRI_TRANSITIONS=204} [2024-06-14 11:48:22,780 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-06-14 11:48:22,781 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 204 transitions, 1790 flow [2024-06-14 11:48:22,781 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) [2024-06-14 11:48:22,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:22,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:48:22,781 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)] === [2024-06-14 11:48:22,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash -467254563, now seen corresponding path program 7 times [2024-06-14 11:48:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:22,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282879778] [2024-06-14 11:48:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:22,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282879778] [2024-06-14 11:48:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282879778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:23,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827956342] [2024-06-14 11:48:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:23,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:23,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 204 transitions, 1790 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) [2024-06-14 11:48:23,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:23,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:23,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:25,106 INFO L124 PetriNetUnfolderBase]: 2795/4286 cut-off events. [2024-06-14 11:48:25,106 INFO L125 PetriNetUnfolderBase]: For 430545/430548 co-relation queries the response was YES. [2024-06-14 11:48:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35312 conditions, 4286 events. 2795/4286 cut-off events. For 430545/430548 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 22620 event pairs, 698 based on Foata normal form. 4/4286 useless extension candidates. Maximal degree in co-relation 35233. Up to 3250 conditions per place. [2024-06-14 11:48:25,142 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 135 selfloop transitions, 114 changer transitions 0/254 dead transitions. [2024-06-14 11:48:25,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 254 transitions, 2926 flow [2024-06-14 11:48:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-14 11:48:25,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2024-06-14 11:48:25,143 INFO L175 Difference]: Start difference. First operand has 169 places, 204 transitions, 1790 flow. Second operand 10 states and 212 transitions. [2024-06-14 11:48:25,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 254 transitions, 2926 flow [2024-06-14 11:48:25,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 254 transitions, 2868 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 11:48:25,485 INFO L231 Difference]: Finished difference. Result has 174 places, 210 transitions, 2084 flow [2024-06-14 11:48:25,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=174, PETRI_TRANSITIONS=210} [2024-06-14 11:48:25,485 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2024-06-14 11:48:25,485 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 210 transitions, 2084 flow [2024-06-14 11:48:25,486 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) [2024-06-14 11:48:25,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:25,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:25,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:48:25,486 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)] === [2024-06-14 11:48:25,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:25,486 INFO L85 PathProgramCache]: Analyzing trace with hash -542989013, now seen corresponding path program 8 times [2024-06-14 11:48:25,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:25,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202823084] [2024-06-14 11:48:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:25,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:26,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:26,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202823084] [2024-06-14 11:48:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202823084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135095602] [2024-06-14 11:48:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:26,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:26,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 210 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) [2024-06-14 11:48:26,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:26,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:26,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:27,957 INFO L124 PetriNetUnfolderBase]: 2817/4328 cut-off events. [2024-06-14 11:48:27,957 INFO L125 PetriNetUnfolderBase]: For 448494/448497 co-relation queries the response was YES. [2024-06-14 11:48:27,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36330 conditions, 4328 events. 2817/4328 cut-off events. For 448494/448497 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22916 event pairs, 698 based on Foata normal form. 4/4328 useless extension candidates. Maximal degree in co-relation 36250. Up to 3269 conditions per place. [2024-06-14 11:48:28,007 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 137 selfloop transitions, 115 changer transitions 0/257 dead transitions. [2024-06-14 11:48:28,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 257 transitions, 3182 flow [2024-06-14 11:48:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-14 11:48:28,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-14 11:48:28,008 INFO L175 Difference]: Start difference. First operand has 174 places, 210 transitions, 2084 flow. Second operand 10 states and 213 transitions. [2024-06-14 11:48:28,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 257 transitions, 3182 flow [2024-06-14 11:48:28,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 257 transitions, 2952 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:28,536 INFO L231 Difference]: Finished difference. Result has 178 places, 213 transitions, 2156 flow [2024-06-14 11:48:28,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2156, PETRI_PLACES=178, PETRI_TRANSITIONS=213} [2024-06-14 11:48:28,537 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 132 predicate places. [2024-06-14 11:48:28,537 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 213 transitions, 2156 flow [2024-06-14 11:48:28,537 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) [2024-06-14 11:48:28,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:28,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:48:28,537 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:28,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash -459620286, now seen corresponding path program 1 times [2024-06-14 11:48:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:28,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70167421] [2024-06-14 11:48:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:28,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:29,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70167421] [2024-06-14 11:48:29,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70167421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:29,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:29,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:48:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275872169] [2024-06-14 11:48:29,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:48:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:48:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:48:29,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:48:29,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 213 transitions, 2156 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) [2024-06-14 11:48:29,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:29,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:48:29,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:30,867 INFO L124 PetriNetUnfolderBase]: 2668/4174 cut-off events. [2024-06-14 11:48:30,867 INFO L125 PetriNetUnfolderBase]: For 466721/466726 co-relation queries the response was YES. [2024-06-14 11:48:30,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35789 conditions, 4174 events. 2668/4174 cut-off events. For 466721/466726 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 22779 event pairs, 723 based on Foata normal form. 6/4155 useless extension candidates. Maximal degree in co-relation 35708. Up to 3727 conditions per place. [2024-06-14 11:48:30,905 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 200 selfloop transitions, 33 changer transitions 0/250 dead transitions. [2024-06-14 11:48:30,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 250 transitions, 2778 flow [2024-06-14 11:48:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:48:30,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:48:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-14 11:48:30,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454320987654321 [2024-06-14 11:48:30,906 INFO L175 Difference]: Start difference. First operand has 178 places, 213 transitions, 2156 flow. Second operand 9 states and 184 transitions. [2024-06-14 11:48:30,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 250 transitions, 2778 flow [2024-06-14 11:48:31,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 250 transitions, 2568 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:31,202 INFO L231 Difference]: Finished difference. Result has 182 places, 218 transitions, 2103 flow [2024-06-14 11:48:31,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2103, PETRI_PLACES=182, PETRI_TRANSITIONS=218} [2024-06-14 11:48:31,203 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2024-06-14 11:48:31,203 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 218 transitions, 2103 flow [2024-06-14 11:48:31,203 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) [2024-06-14 11:48:31,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:31,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:31,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:48:31,203 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:31,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:31,203 INFO L85 PathProgramCache]: Analyzing trace with hash -387384083, now seen corresponding path program 9 times [2024-06-14 11:48:31,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:31,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056320185] [2024-06-14 11:48:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:31,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:32,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056320185] [2024-06-14 11:48:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056320185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807071157] [2024-06-14 11:48:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:32,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:32,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:32,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:32,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 218 transitions, 2103 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) [2024-06-14 11:48:32,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:32,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:32,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:33,551 INFO L124 PetriNetUnfolderBase]: 2856/4402 cut-off events. [2024-06-14 11:48:33,551 INFO L125 PetriNetUnfolderBase]: For 481920/481923 co-relation queries the response was YES. [2024-06-14 11:48:33,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37253 conditions, 4402 events. 2856/4402 cut-off events. For 481920/481923 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23517 event pairs, 701 based on Foata normal form. 4/4402 useless extension candidates. Maximal degree in co-relation 37170. Up to 3315 conditions per place. [2024-06-14 11:48:33,591 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 141 selfloop transitions, 119 changer transitions 0/265 dead transitions. [2024-06-14 11:48:33,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 265 transitions, 3239 flow [2024-06-14 11:48:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-14 11:48:33,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47555555555555556 [2024-06-14 11:48:33,592 INFO L175 Difference]: Start difference. First operand has 182 places, 218 transitions, 2103 flow. Second operand 10 states and 214 transitions. [2024-06-14 11:48:33,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 265 transitions, 3239 flow [2024-06-14 11:48:34,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 265 transitions, 3130 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:34,088 INFO L231 Difference]: Finished difference. Result has 186 places, 221 transitions, 2298 flow [2024-06-14 11:48:34,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2298, PETRI_PLACES=186, PETRI_TRANSITIONS=221} [2024-06-14 11:48:34,090 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 140 predicate places. [2024-06-14 11:48:34,091 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 221 transitions, 2298 flow [2024-06-14 11:48:34,091 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) [2024-06-14 11:48:34,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:34,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:34,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:48:34,091 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:34,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 404497963, now seen corresponding path program 10 times [2024-06-14 11:48:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:34,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653933091] [2024-06-14 11:48:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:35,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:35,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653933091] [2024-06-14 11:48:35,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653933091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:35,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:35,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:35,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809148136] [2024-06-14 11:48:35,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:35,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:35,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:35,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:35,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:35,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 221 transitions, 2298 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) [2024-06-14 11:48:35,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:35,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:35,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:36,422 INFO L124 PetriNetUnfolderBase]: 2846/4388 cut-off events. [2024-06-14 11:48:36,423 INFO L125 PetriNetUnfolderBase]: For 494399/494402 co-relation queries the response was YES. [2024-06-14 11:48:36,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37563 conditions, 4388 events. 2846/4388 cut-off events. For 494399/494402 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23453 event pairs, 694 based on Foata normal form. 4/4388 useless extension candidates. Maximal degree in co-relation 37479. Up to 3307 conditions per place. [2024-06-14 11:48:36,465 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 132 selfloop transitions, 125 changer transitions 0/262 dead transitions. [2024-06-14 11:48:36,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 262 transitions, 3150 flow [2024-06-14 11:48:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-14 11:48:36,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622222222222222 [2024-06-14 11:48:36,466 INFO L175 Difference]: Start difference. First operand has 186 places, 221 transitions, 2298 flow. Second operand 10 states and 208 transitions. [2024-06-14 11:48:36,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 262 transitions, 3150 flow [2024-06-14 11:48:36,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 262 transitions, 2869 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:36,907 INFO L231 Difference]: Finished difference. Result has 189 places, 221 transitions, 2275 flow [2024-06-14 11:48:36,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2275, PETRI_PLACES=189, PETRI_TRANSITIONS=221} [2024-06-14 11:48:36,907 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 143 predicate places. [2024-06-14 11:48:36,907 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 221 transitions, 2275 flow [2024-06-14 11:48:36,908 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) [2024-06-14 11:48:36,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:36,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:36,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:48:36,908 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)] === [2024-06-14 11:48:36,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash -907417799, now seen corresponding path program 2 times [2024-06-14 11:48:36,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:36,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690467876] [2024-06-14 11:48:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690467876] [2024-06-14 11:48:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690467876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:48:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157624565] [2024-06-14 11:48:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:48:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:48:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:48:37,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:48:37,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 221 transitions, 2275 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) [2024-06-14 11:48:37,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:37,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:48:37,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:38,695 INFO L124 PetriNetUnfolderBase]: 2486/3999 cut-off events. [2024-06-14 11:48:38,695 INFO L125 PetriNetUnfolderBase]: For 503472/503472 co-relation queries the response was YES. [2024-06-14 11:48:38,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35759 conditions, 3999 events. 2486/3999 cut-off events. For 503472/503472 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22587 event pairs, 699 based on Foata normal form. 1/3976 useless extension candidates. Maximal degree in co-relation 35674. Up to 3505 conditions per place. [2024-06-14 11:48:38,736 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 182 selfloop transitions, 19 changer transitions 0/240 dead transitions. [2024-06-14 11:48:38,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 240 transitions, 2763 flow [2024-06-14 11:48:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:48:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:48:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-14 11:48:38,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45396825396825397 [2024-06-14 11:48:38,737 INFO L175 Difference]: Start difference. First operand has 189 places, 221 transitions, 2275 flow. Second operand 7 states and 143 transitions. [2024-06-14 11:48:38,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 240 transitions, 2763 flow [2024-06-14 11:48:39,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 240 transitions, 2462 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:48:39,209 INFO L231 Difference]: Finished difference. Result has 185 places, 224 transitions, 2070 flow [2024-06-14 11:48:39,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2070, PETRI_PLACES=185, PETRI_TRANSITIONS=224} [2024-06-14 11:48:39,209 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 139 predicate places. [2024-06-14 11:48:39,209 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 224 transitions, 2070 flow [2024-06-14 11:48:39,210 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) [2024-06-14 11:48:39,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:39,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:39,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:48:39,210 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)] === [2024-06-14 11:48:39,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1350707414, now seen corresponding path program 1 times [2024-06-14 11:48:39,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:39,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123187779] [2024-06-14 11:48:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123187779] [2024-06-14 11:48:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123187779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:40,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:40,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:48:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3185107] [2024-06-14 11:48:40,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:40,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:48:40,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:48:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:48:40,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:48:40,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 224 transitions, 2070 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:40,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:40,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:48:40,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:41,187 INFO L124 PetriNetUnfolderBase]: 2320/3795 cut-off events. [2024-06-14 11:48:41,187 INFO L125 PetriNetUnfolderBase]: For 515496/515506 co-relation queries the response was YES. [2024-06-14 11:48:41,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34747 conditions, 3795 events. 2320/3795 cut-off events. For 515496/515506 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21838 event pairs, 668 based on Foata normal form. 1/3752 useless extension candidates. Maximal degree in co-relation 34661. Up to 3224 conditions per place. [2024-06-14 11:48:41,224 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 177 selfloop transitions, 14 changer transitions 0/243 dead transitions. [2024-06-14 11:48:41,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 243 transitions, 2532 flow [2024-06-14 11:48:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:48:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:48:41,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-14 11:48:41,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 11:48:41,225 INFO L175 Difference]: Start difference. First operand has 185 places, 224 transitions, 2070 flow. Second operand 7 states and 147 transitions. [2024-06-14 11:48:41,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 243 transitions, 2532 flow [2024-06-14 11:48:41,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 243 transitions, 2458 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-14 11:48:41,599 INFO L231 Difference]: Finished difference. Result has 187 places, 227 transitions, 2076 flow [2024-06-14 11:48:41,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2076, PETRI_PLACES=187, PETRI_TRANSITIONS=227} [2024-06-14 11:48:41,599 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2024-06-14 11:48:41,599 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 227 transitions, 2076 flow [2024-06-14 11:48:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:41,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:41,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:41,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:48:41,600 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:41,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:41,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1396655300, now seen corresponding path program 2 times [2024-06-14 11:48:41,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:41,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381340508] [2024-06-14 11:48:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:41,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381340508] [2024-06-14 11:48:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381340508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:42,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:42,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:48:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943890388] [2024-06-14 11:48:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:42,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:48:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:42,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:48:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:48:42,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:48:42,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 227 transitions, 2076 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) [2024-06-14 11:48:42,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:42,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:48:42,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:43,805 INFO L124 PetriNetUnfolderBase]: 2718/4260 cut-off events. [2024-06-14 11:48:43,805 INFO L125 PetriNetUnfolderBase]: For 539211/539222 co-relation queries the response was YES. [2024-06-14 11:48:43,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37723 conditions, 4260 events. 2718/4260 cut-off events. For 539211/539222 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 23341 event pairs, 717 based on Foata normal form. 12/4253 useless extension candidates. Maximal degree in co-relation 37636. Up to 3796 conditions per place. [2024-06-14 11:48:43,846 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 207 selfloop transitions, 37 changer transitions 0/262 dead transitions. [2024-06-14 11:48:43,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 262 transitions, 2730 flow [2024-06-14 11:48:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:48:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:48:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-14 11:48:43,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:48:43,847 INFO L175 Difference]: Start difference. First operand has 187 places, 227 transitions, 2076 flow. Second operand 9 states and 180 transitions. [2024-06-14 11:48:43,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 262 transitions, 2730 flow [2024-06-14 11:48:44,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 262 transitions, 2672 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 11:48:44,264 INFO L231 Difference]: Finished difference. Result has 192 places, 233 transitions, 2201 flow [2024-06-14 11:48:44,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2201, PETRI_PLACES=192, PETRI_TRANSITIONS=233} [2024-06-14 11:48:44,264 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 146 predicate places. [2024-06-14 11:48:44,264 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 233 transitions, 2201 flow [2024-06-14 11:48:44,264 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) [2024-06-14 11:48:44,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:44,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:48:44,265 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:44,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1396378253, now seen corresponding path program 11 times [2024-06-14 11:48:44,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:44,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517669165] [2024-06-14 11:48:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:44,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517669165] [2024-06-14 11:48:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517669165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286833653] [2024-06-14 11:48:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:45,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:45,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:45,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 233 transitions, 2201 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) [2024-06-14 11:48:45,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:45,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:45,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:46,651 INFO L124 PetriNetUnfolderBase]: 2906/4494 cut-off events. [2024-06-14 11:48:46,652 INFO L125 PetriNetUnfolderBase]: For 558805/558811 co-relation queries the response was YES. [2024-06-14 11:48:46,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39821 conditions, 4494 events. 2906/4494 cut-off events. For 558805/558811 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 24241 event pairs, 726 based on Foata normal form. 5/4490 useless extension candidates. Maximal degree in co-relation 39732. Up to 3374 conditions per place. [2024-06-14 11:48:46,698 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 134 selfloop transitions, 134 changer transitions 0/273 dead transitions. [2024-06-14 11:48:46,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 273 transitions, 3145 flow [2024-06-14 11:48:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:46,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-14 11:48:46,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45111111111111113 [2024-06-14 11:48:46,700 INFO L175 Difference]: Start difference. First operand has 192 places, 233 transitions, 2201 flow. Second operand 10 states and 203 transitions. [2024-06-14 11:48:46,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 273 transitions, 3145 flow [2024-06-14 11:48:47,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 273 transitions, 3020 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:47,237 INFO L231 Difference]: Finished difference. Result has 196 places, 236 transitions, 2416 flow [2024-06-14 11:48:47,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2416, PETRI_PLACES=196, PETRI_TRANSITIONS=236} [2024-06-14 11:48:47,238 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 150 predicate places. [2024-06-14 11:48:47,238 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 236 transitions, 2416 flow [2024-06-14 11:48:47,238 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) [2024-06-14 11:48:47,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:47,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:47,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:48:47,238 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:48:47,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1148493922, now seen corresponding path program 3 times [2024-06-14 11:48:47,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:47,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001474203] [2024-06-14 11:48:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:47,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:48,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:48,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001474203] [2024-06-14 11:48:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001474203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:48:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955906469] [2024-06-14 11:48:48,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:48:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:48:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:48:48,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:48:48,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 236 transitions, 2416 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) [2024-06-14 11:48:48,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:48,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:48:48,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:49,575 INFO L124 PetriNetUnfolderBase]: 2757/4329 cut-off events. [2024-06-14 11:48:49,575 INFO L125 PetriNetUnfolderBase]: For 579193/579204 co-relation queries the response was YES. [2024-06-14 11:48:49,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39583 conditions, 4329 events. 2757/4329 cut-off events. For 579193/579204 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 23882 event pairs, 729 based on Foata normal form. 12/4308 useless extension candidates. Maximal degree in co-relation 39493. Up to 3855 conditions per place. [2024-06-14 11:48:49,641 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 213 selfloop transitions, 38 changer transitions 0/269 dead transitions. [2024-06-14 11:48:49,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 269 transitions, 3076 flow [2024-06-14 11:48:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:48:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:48:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-14 11:48:49,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469135802469136 [2024-06-14 11:48:49,643 INFO L175 Difference]: Start difference. First operand has 196 places, 236 transitions, 2416 flow. Second operand 9 states and 181 transitions. [2024-06-14 11:48:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 269 transitions, 3076 flow [2024-06-14 11:48:50,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 269 transitions, 2851 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:50,503 INFO L231 Difference]: Finished difference. Result has 199 places, 241 transitions, 2372 flow [2024-06-14 11:48:50,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2372, PETRI_PLACES=199, PETRI_TRANSITIONS=241} [2024-06-14 11:48:50,504 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 153 predicate places. [2024-06-14 11:48:50,504 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 241 transitions, 2372 flow [2024-06-14 11:48:50,504 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) [2024-06-14 11:48:50,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:50,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:50,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:48:50,505 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)] === [2024-06-14 11:48:50,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash -493806243, now seen corresponding path program 12 times [2024-06-14 11:48:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:50,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290837281] [2024-06-14 11:48:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:50,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:51,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:51,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290837281] [2024-06-14 11:48:51,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290837281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:51,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:51,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:51,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762033832] [2024-06-14 11:48:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:51,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:51,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:51,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:48:51,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 241 transitions, 2372 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) [2024-06-14 11:48:51,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:51,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:48:51,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:53,044 INFO L124 PetriNetUnfolderBase]: 2977/4619 cut-off events. [2024-06-14 11:48:53,044 INFO L125 PetriNetUnfolderBase]: For 606079/606085 co-relation queries the response was YES. [2024-06-14 11:48:53,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41649 conditions, 4619 events. 2977/4619 cut-off events. For 606079/606085 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 25168 event pairs, 718 based on Foata normal form. 5/4615 useless extension candidates. Maximal degree in co-relation 41557. Up to 3447 conditions per place. [2024-06-14 11:48:53,095 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 149 selfloop transitions, 133 changer transitions 0/287 dead transitions. [2024-06-14 11:48:53,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 287 transitions, 3670 flow [2024-06-14 11:48:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-14 11:48:53,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46444444444444444 [2024-06-14 11:48:53,097 INFO L175 Difference]: Start difference. First operand has 199 places, 241 transitions, 2372 flow. Second operand 10 states and 209 transitions. [2024-06-14 11:48:53,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 287 transitions, 3670 flow [2024-06-14 11:48:53,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 287 transitions, 3537 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:53,682 INFO L231 Difference]: Finished difference. Result has 203 places, 247 transitions, 2635 flow [2024-06-14 11:48:53,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2635, PETRI_PLACES=203, PETRI_TRANSITIONS=247} [2024-06-14 11:48:53,682 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 157 predicate places. [2024-06-14 11:48:53,682 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 247 transitions, 2635 flow [2024-06-14 11:48:53,682 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) [2024-06-14 11:48:53,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:53,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:53,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:48:53,682 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)] === [2024-06-14 11:48:53,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1710354530, now seen corresponding path program 4 times [2024-06-14 11:48:53,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:53,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468032332] [2024-06-14 11:48:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:54,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468032332] [2024-06-14 11:48:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468032332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:54,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:54,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:48:54,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712145595] [2024-06-14 11:48:54,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:54,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:48:54,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:54,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:48:54,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:48:54,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:48:54,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 247 transitions, 2635 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) [2024-06-14 11:48:54,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:54,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:48:54,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:56,049 INFO L124 PetriNetUnfolderBase]: 2828/4449 cut-off events. [2024-06-14 11:48:56,049 INFO L125 PetriNetUnfolderBase]: For 627825/627836 co-relation queries the response was YES. [2024-06-14 11:48:56,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41386 conditions, 4449 events. 2828/4449 cut-off events. For 627825/627836 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 24799 event pairs, 741 based on Foata normal form. 12/4428 useless extension candidates. Maximal degree in co-relation 41293. Up to 3960 conditions per place. [2024-06-14 11:48:56,097 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 218 selfloop transitions, 43 changer transitions 0/279 dead transitions. [2024-06-14 11:48:56,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 279 transitions, 3315 flow [2024-06-14 11:48:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:48:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:48:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-14 11:48:56,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419753086419753 [2024-06-14 11:48:56,098 INFO L175 Difference]: Start difference. First operand has 203 places, 247 transitions, 2635 flow. Second operand 9 states and 179 transitions. [2024-06-14 11:48:56,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 279 transitions, 3315 flow [2024-06-14 11:48:56,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 279 transitions, 2876 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:56,574 INFO L231 Difference]: Finished difference. Result has 203 places, 251 transitions, 2381 flow [2024-06-14 11:48:56,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2381, PETRI_PLACES=203, PETRI_TRANSITIONS=251} [2024-06-14 11:48:56,574 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 157 predicate places. [2024-06-14 11:48:56,574 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 251 transitions, 2381 flow [2024-06-14 11:48:56,575 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) [2024-06-14 11:48:56,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:56,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:56,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:48:56,575 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)] === [2024-06-14 11:48:56,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash 664451646, now seen corresponding path program 5 times [2024-06-14 11:48:56,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:56,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701482899] [2024-06-14 11:48:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:57,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:57,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701482899] [2024-06-14 11:48:57,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701482899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:57,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:57,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:48:57,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335038308] [2024-06-14 11:48:57,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:57,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:48:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:48:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:48:57,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:48:57,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 251 transitions, 2381 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) [2024-06-14 11:48:57,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:57,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:48:57,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:58,809 INFO L124 PetriNetUnfolderBase]: 2820/4437 cut-off events. [2024-06-14 11:48:58,809 INFO L125 PetriNetUnfolderBase]: For 632879/632890 co-relation queries the response was YES. [2024-06-14 11:48:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40930 conditions, 4437 events. 2820/4437 cut-off events. For 632879/632890 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 24712 event pairs, 693 based on Foata normal form. 12/4423 useless extension candidates. Maximal degree in co-relation 40836. Up to 3853 conditions per place. [2024-06-14 11:48:58,854 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 212 selfloop transitions, 52 changer transitions 0/282 dead transitions. [2024-06-14 11:48:58,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 282 transitions, 3049 flow [2024-06-14 11:48:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:48:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:48:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-14 11:48:58,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:48:58,856 INFO L175 Difference]: Start difference. First operand has 203 places, 251 transitions, 2381 flow. Second operand 9 states and 180 transitions. [2024-06-14 11:48:58,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 282 transitions, 3049 flow [2024-06-14 11:48:59,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 282 transitions, 2849 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:59,406 INFO L231 Difference]: Finished difference. Result has 206 places, 253 transitions, 2364 flow [2024-06-14 11:48:59,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2364, PETRI_PLACES=206, PETRI_TRANSITIONS=253} [2024-06-14 11:48:59,406 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 160 predicate places. [2024-06-14 11:48:59,406 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 253 transitions, 2364 flow [2024-06-14 11:48:59,407 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) [2024-06-14 11:48:59,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:59,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:48:59,407 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)] === [2024-06-14 11:48:59,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1140859645, now seen corresponding path program 13 times [2024-06-14 11:48:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:59,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840192018] [2024-06-14 11:48:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:59,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840192018] [2024-06-14 11:49:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840192018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:00,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:00,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206470581] [2024-06-14 11:49:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:00,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:00,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:00,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:00,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 253 transitions, 2364 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) [2024-06-14 11:49:00,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:00,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:00,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:01,884 INFO L124 PetriNetUnfolderBase]: 3008/4671 cut-off events. [2024-06-14 11:49:01,884 INFO L125 PetriNetUnfolderBase]: For 650275/650281 co-relation queries the response was YES. [2024-06-14 11:49:01,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42520 conditions, 4671 events. 3008/4671 cut-off events. For 650275/650281 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 25549 event pairs, 697 based on Foata normal form. 5/4667 useless extension candidates. Maximal degree in co-relation 42425. Up to 3481 conditions per place. [2024-06-14 11:49:01,935 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 146 selfloop transitions, 143 changer transitions 0/294 dead transitions. [2024-06-14 11:49:01,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 294 transitions, 3376 flow [2024-06-14 11:49:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-14 11:49:01,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-14 11:49:01,937 INFO L175 Difference]: Start difference. First operand has 206 places, 253 transitions, 2364 flow. Second operand 10 states and 205 transitions. [2024-06-14 11:49:01,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 294 transitions, 3376 flow [2024-06-14 11:49:02,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 294 transitions, 3211 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:02,514 INFO L231 Difference]: Finished difference. Result has 209 places, 256 transitions, 2545 flow [2024-06-14 11:49:02,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2545, PETRI_PLACES=209, PETRI_TRANSITIONS=256} [2024-06-14 11:49:02,514 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 163 predicate places. [2024-06-14 11:49:02,514 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 256 transitions, 2545 flow [2024-06-14 11:49:02,515 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) [2024-06-14 11:49:02,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:02,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:02,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:49:02,515 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)] === [2024-06-14 11:49:02,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:02,515 INFO L85 PathProgramCache]: Analyzing trace with hash 370387243, now seen corresponding path program 14 times [2024-06-14 11:49:02,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:02,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340709030] [2024-06-14 11:49:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:02,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:03,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:03,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340709030] [2024-06-14 11:49:03,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340709030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:03,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:03,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:03,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678724339] [2024-06-14 11:49:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:03,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:03,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:03,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 256 transitions, 2545 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) [2024-06-14 11:49:03,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:03,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:03,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:04,921 INFO L124 PetriNetUnfolderBase]: 2998/4657 cut-off events. [2024-06-14 11:49:04,921 INFO L125 PetriNetUnfolderBase]: For 660874/660880 co-relation queries the response was YES. [2024-06-14 11:49:04,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42783 conditions, 4657 events. 2998/4657 cut-off events. For 660874/660880 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25423 event pairs, 697 based on Foata normal form. 5/4653 useless extension candidates. Maximal degree in co-relation 42687. Up to 3473 conditions per place. [2024-06-14 11:49:04,973 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 149 selfloop transitions, 140 changer transitions 0/294 dead transitions. [2024-06-14 11:49:04,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 294 transitions, 3509 flow [2024-06-14 11:49:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-14 11:49:04,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577777777777778 [2024-06-14 11:49:04,975 INFO L175 Difference]: Start difference. First operand has 209 places, 256 transitions, 2545 flow. Second operand 10 states and 206 transitions. [2024-06-14 11:49:04,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 294 transitions, 3509 flow [2024-06-14 11:49:05,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 294 transitions, 3097 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:05,555 INFO L231 Difference]: Finished difference. Result has 211 places, 256 transitions, 2421 flow [2024-06-14 11:49:05,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2421, PETRI_PLACES=211, PETRI_TRANSITIONS=256} [2024-06-14 11:49:05,556 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 165 predicate places. [2024-06-14 11:49:05,556 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 256 transitions, 2421 flow [2024-06-14 11:49:05,556 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) [2024-06-14 11:49:05,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:05,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:49:05,556 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)] === [2024-06-14 11:49:05,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 377738893, now seen corresponding path program 15 times [2024-06-14 11:49:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035694295] [2024-06-14 11:49:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035694295] [2024-06-14 11:49:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035694295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790171659] [2024-06-14 11:49:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:06,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:06,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:06,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 256 transitions, 2421 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) [2024-06-14 11:49:06,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:06,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:06,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:07,995 INFO L124 PetriNetUnfolderBase]: 2988/4643 cut-off events. [2024-06-14 11:49:07,995 INFO L125 PetriNetUnfolderBase]: For 669590/669596 co-relation queries the response was YES. [2024-06-14 11:49:08,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42485 conditions, 4643 events. 2988/4643 cut-off events. For 669590/669596 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25361 event pairs, 712 based on Foata normal form. 5/4639 useless extension candidates. Maximal degree in co-relation 42388. Up to 3465 conditions per place. [2024-06-14 11:49:08,046 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 153 selfloop transitions, 135 changer transitions 0/293 dead transitions. [2024-06-14 11:49:08,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 293 transitions, 3135 flow [2024-06-14 11:49:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-14 11:49:08,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577777777777778 [2024-06-14 11:49:08,047 INFO L175 Difference]: Start difference. First operand has 211 places, 256 transitions, 2421 flow. Second operand 10 states and 206 transitions. [2024-06-14 11:49:08,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 293 transitions, 3135 flow [2024-06-14 11:49:08,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 293 transitions, 2839 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:08,871 INFO L231 Difference]: Finished difference. Result has 213 places, 256 transitions, 2403 flow [2024-06-14 11:49:08,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2403, PETRI_PLACES=213, PETRI_TRANSITIONS=256} [2024-06-14 11:49:08,871 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 167 predicate places. [2024-06-14 11:49:08,871 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 256 transitions, 2403 flow [2024-06-14 11:49:08,871 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) [2024-06-14 11:49:08,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:08,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:08,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:49:08,872 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:08,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2016542686, now seen corresponding path program 2 times [2024-06-14 11:49:08,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:08,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99988214] [2024-06-14 11:49:08,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:08,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:10,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99988214] [2024-06-14 11:49:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99988214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:10,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:10,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93438852] [2024-06-14 11:49:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:10,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:10,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:10,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:49:10,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 256 transitions, 2403 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:10,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:10,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:49:10,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:10,919 INFO L124 PetriNetUnfolderBase]: 2424/3985 cut-off events. [2024-06-14 11:49:10,919 INFO L125 PetriNetUnfolderBase]: For 680222/680248 co-relation queries the response was YES. [2024-06-14 11:49:10,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39349 conditions, 3985 events. 2424/3985 cut-off events. For 680222/680248 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 23263 event pairs, 666 based on Foata normal form. 9/3936 useless extension candidates. Maximal degree in co-relation 39251. Up to 3371 conditions per place. [2024-06-14 11:49:10,965 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 197 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2024-06-14 11:49:10,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 275 transitions, 3131 flow [2024-06-14 11:49:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-14 11:49:10,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-14 11:49:10,966 INFO L175 Difference]: Start difference. First operand has 213 places, 256 transitions, 2403 flow. Second operand 7 states and 145 transitions. [2024-06-14 11:49:10,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 275 transitions, 3131 flow [2024-06-14 11:49:11,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 275 transitions, 2698 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-14 11:49:11,554 INFO L231 Difference]: Finished difference. Result has 209 places, 264 transitions, 2165 flow [2024-06-14 11:49:11,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2165, PETRI_PLACES=209, PETRI_TRANSITIONS=264} [2024-06-14 11:49:11,554 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 163 predicate places. [2024-06-14 11:49:11,554 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 264 transitions, 2165 flow [2024-06-14 11:49:11,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:11,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:11,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:49:11,555 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:11,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2103684893, now seen corresponding path program 3 times [2024-06-14 11:49:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:11,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577375660] [2024-06-14 11:49:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:11,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:12,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577375660] [2024-06-14 11:49:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577375660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93395507] [2024-06-14 11:49:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:12,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:12,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 264 transitions, 2165 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) [2024-06-14 11:49:12,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:12,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:12,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:13,391 INFO L124 PetriNetUnfolderBase]: 2587/4193 cut-off events. [2024-06-14 11:49:13,391 INFO L125 PetriNetUnfolderBase]: For 694510/694519 co-relation queries the response was YES. [2024-06-14 11:49:13,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40236 conditions, 4193 events. 2587/4193 cut-off events. For 694510/694519 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 24072 event pairs, 693 based on Foata normal form. 4/4156 useless extension candidates. Maximal degree in co-relation 40136. Up to 3662 conditions per place. [2024-06-14 11:49:13,439 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 212 selfloop transitions, 26 changer transitions 0/277 dead transitions. [2024-06-14 11:49:13,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 277 transitions, 2721 flow [2024-06-14 11:49:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-14 11:49:13,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2024-06-14 11:49:13,440 INFO L175 Difference]: Start difference. First operand has 209 places, 264 transitions, 2165 flow. Second operand 7 states and 139 transitions. [2024-06-14 11:49:13,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 277 transitions, 2721 flow [2024-06-14 11:49:14,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 277 transitions, 2651 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-14 11:49:14,121 INFO L231 Difference]: Finished difference. Result has 213 places, 267 transitions, 2215 flow [2024-06-14 11:49:14,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2215, PETRI_PLACES=213, PETRI_TRANSITIONS=267} [2024-06-14 11:49:14,122 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 167 predicate places. [2024-06-14 11:49:14,122 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 267 transitions, 2215 flow [2024-06-14 11:49:14,122 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) [2024-06-14 11:49:14,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:14,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:14,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:49:14,122 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:14,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2103685358, now seen corresponding path program 3 times [2024-06-14 11:49:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:14,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269851272] [2024-06-14 11:49:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:14,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:15,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269851272] [2024-06-14 11:49:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269851272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:15,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:15,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:15,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409075951] [2024-06-14 11:49:15,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:15,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:15,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:15,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:15,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:49:15,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 267 transitions, 2215 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:15,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:15,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:49:15,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:16,174 INFO L124 PetriNetUnfolderBase]: 2418/3967 cut-off events. [2024-06-14 11:49:16,174 INFO L125 PetriNetUnfolderBase]: For 709626/709657 co-relation queries the response was YES. [2024-06-14 11:49:16,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39540 conditions, 3967 events. 2418/3967 cut-off events. For 709626/709657 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 23009 event pairs, 666 based on Foata normal form. 9/3909 useless extension candidates. Maximal degree in co-relation 39438. Up to 3374 conditions per place. [2024-06-14 11:49:16,220 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 206 selfloop transitions, 19 changer transitions 0/278 dead transitions. [2024-06-14 11:49:16,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 278 transitions, 2696 flow [2024-06-14 11:49:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:16,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-14 11:49:16,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45396825396825397 [2024-06-14 11:49:16,221 INFO L175 Difference]: Start difference. First operand has 213 places, 267 transitions, 2215 flow. Second operand 7 states and 143 transitions. [2024-06-14 11:49:16,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 278 transitions, 2696 flow [2024-06-14 11:49:16,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 278 transitions, 2562 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:16,906 INFO L231 Difference]: Finished difference. Result has 215 places, 268 transitions, 2134 flow [2024-06-14 11:49:16,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2134, PETRI_PLACES=215, PETRI_TRANSITIONS=268} [2024-06-14 11:49:16,906 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 169 predicate places. [2024-06-14 11:49:16,906 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 268 transitions, 2134 flow [2024-06-14 11:49:16,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:16,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:16,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:16,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:49:16,907 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:16,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:16,907 INFO L85 PathProgramCache]: Analyzing trace with hash 505034037, now seen corresponding path program 1 times [2024-06-14 11:49:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:16,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164985017] [2024-06-14 11:49:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:17,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:17,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164985017] [2024-06-14 11:49:17,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164985017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:17,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:17,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:17,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667084429] [2024-06-14 11:49:17,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:17,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:17,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:17,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:17,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 268 transitions, 2134 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) [2024-06-14 11:49:17,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:17,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:17,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:18,660 INFO L124 PetriNetUnfolderBase]: 2670/4299 cut-off events. [2024-06-14 11:49:18,660 INFO L125 PetriNetUnfolderBase]: For 732017/732019 co-relation queries the response was YES. [2024-06-14 11:49:18,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41281 conditions, 4299 events. 2670/4299 cut-off events. For 732017/732019 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 24551 event pairs, 666 based on Foata normal form. 4/4277 useless extension candidates. Maximal degree in co-relation 41178. Up to 3794 conditions per place. [2024-06-14 11:49:18,710 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 250 selfloop transitions, 14 changer transitions 0/288 dead transitions. [2024-06-14 11:49:18,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 288 transitions, 2762 flow [2024-06-14 11:49:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-14 11:49:18,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-14 11:49:18,711 INFO L175 Difference]: Start difference. First operand has 215 places, 268 transitions, 2134 flow. Second operand 7 states and 142 transitions. [2024-06-14 11:49:18,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 288 transitions, 2762 flow [2024-06-14 11:49:19,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 288 transitions, 2720 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:19,268 INFO L231 Difference]: Finished difference. Result has 217 places, 271 transitions, 2182 flow [2024-06-14 11:49:19,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2182, PETRI_PLACES=217, PETRI_TRANSITIONS=271} [2024-06-14 11:49:19,268 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 171 predicate places. [2024-06-14 11:49:19,268 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 271 transitions, 2182 flow [2024-06-14 11:49:19,268 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) [2024-06-14 11:49:19,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:19,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:19,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:49:19,268 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)] === [2024-06-14 11:49:19,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1343081135, now seen corresponding path program 2 times [2024-06-14 11:49:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:19,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856314625] [2024-06-14 11:49:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:20,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856314625] [2024-06-14 11:49:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856314625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:20,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:20,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326697468] [2024-06-14 11:49:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:20,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:20,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:20,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:20,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 271 transitions, 2182 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) [2024-06-14 11:49:20,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:20,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:20,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:21,142 INFO L124 PetriNetUnfolderBase]: 2680/4315 cut-off events. [2024-06-14 11:49:21,142 INFO L125 PetriNetUnfolderBase]: For 750096/750098 co-relation queries the response was YES. [2024-06-14 11:49:21,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41994 conditions, 4315 events. 2680/4315 cut-off events. For 750096/750098 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24640 event pairs, 666 based on Foata normal form. 4/4293 useless extension candidates. Maximal degree in co-relation 41890. Up to 3799 conditions per place. [2024-06-14 11:49:21,190 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 246 selfloop transitions, 19 changer transitions 0/289 dead transitions. [2024-06-14 11:49:21,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 289 transitions, 2820 flow [2024-06-14 11:49:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-14 11:49:21,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-14 11:49:21,191 INFO L175 Difference]: Start difference. First operand has 217 places, 271 transitions, 2182 flow. Second operand 7 states and 142 transitions. [2024-06-14 11:49:21,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 289 transitions, 2820 flow [2024-06-14 11:49:21,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 289 transitions, 2752 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:21,977 INFO L231 Difference]: Finished difference. Result has 219 places, 274 transitions, 2220 flow [2024-06-14 11:49:21,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2220, PETRI_PLACES=219, PETRI_TRANSITIONS=274} [2024-06-14 11:49:21,978 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 173 predicate places. [2024-06-14 11:49:21,978 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 274 transitions, 2220 flow [2024-06-14 11:49:21,978 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) [2024-06-14 11:49:21,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:21,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:21,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:49:21,978 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)] === [2024-06-14 11:49:21,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:21,979 INFO L85 PathProgramCache]: Analyzing trace with hash 505183984, now seen corresponding path program 1 times [2024-06-14 11:49:21,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:21,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835819091] [2024-06-14 11:49:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835819091] [2024-06-14 11:49:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835819091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863086816] [2024-06-14 11:49:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:23,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:23,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 274 transitions, 2220 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) [2024-06-14 11:49:23,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:23,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:23,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:24,015 INFO L124 PetriNetUnfolderBase]: 2690/4331 cut-off events. [2024-06-14 11:49:24,016 INFO L125 PetriNetUnfolderBase]: For 771731/771733 co-relation queries the response was YES. [2024-06-14 11:49:24,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42631 conditions, 4331 events. 2690/4331 cut-off events. For 771731/771733 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 24731 event pairs, 665 based on Foata normal form. 5/4310 useless extension candidates. Maximal degree in co-relation 42526. Up to 3828 conditions per place. [2024-06-14 11:49:24,062 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 253 selfloop transitions, 14 changer transitions 0/291 dead transitions. [2024-06-14 11:49:24,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 291 transitions, 2832 flow [2024-06-14 11:49:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-14 11:49:24,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2024-06-14 11:49:24,063 INFO L175 Difference]: Start difference. First operand has 219 places, 274 transitions, 2220 flow. Second operand 7 states and 139 transitions. [2024-06-14 11:49:24,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 291 transitions, 2832 flow [2024-06-14 11:49:24,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 291 transitions, 2748 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:24,841 INFO L231 Difference]: Finished difference. Result has 221 places, 277 transitions, 2220 flow [2024-06-14 11:49:24,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2220, PETRI_PLACES=221, PETRI_TRANSITIONS=277} [2024-06-14 11:49:24,842 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 175 predicate places. [2024-06-14 11:49:24,842 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 277 transitions, 2220 flow [2024-06-14 11:49:24,842 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) [2024-06-14 11:49:24,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:24,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:24,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:49:24,842 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:24,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2103931374, now seen corresponding path program 2 times [2024-06-14 11:49:24,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458409309] [2024-06-14 11:49:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:26,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:26,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458409309] [2024-06-14 11:49:26,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458409309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:26,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:26,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:26,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426395655] [2024-06-14 11:49:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:26,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:26,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:26,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:26,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 277 transitions, 2220 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) [2024-06-14 11:49:26,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:26,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:26,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:27,050 INFO L124 PetriNetUnfolderBase]: 2700/4348 cut-off events. [2024-06-14 11:49:27,050 INFO L125 PetriNetUnfolderBase]: For 789026/789031 co-relation queries the response was YES. [2024-06-14 11:49:27,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43247 conditions, 4348 events. 2700/4348 cut-off events. For 789026/789031 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24899 event pairs, 669 based on Foata normal form. 7/4328 useless extension candidates. Maximal degree in co-relation 43141. Up to 3836 conditions per place. [2024-06-14 11:49:27,107 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 248 selfloop transitions, 19 changer transitions 0/291 dead transitions. [2024-06-14 11:49:27,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 291 transitions, 2830 flow [2024-06-14 11:49:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-14 11:49:27,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-14 11:49:27,108 INFO L175 Difference]: Start difference. First operand has 221 places, 277 transitions, 2220 flow. Second operand 7 states and 138 transitions. [2024-06-14 11:49:27,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 291 transitions, 2830 flow [2024-06-14 11:49:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 291 transitions, 2768 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:27,799 INFO L231 Difference]: Finished difference. Result has 223 places, 280 transitions, 2258 flow [2024-06-14 11:49:27,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2258, PETRI_PLACES=223, PETRI_TRANSITIONS=280} [2024-06-14 11:49:27,799 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 177 predicate places. [2024-06-14 11:49:27,799 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 280 transitions, 2258 flow [2024-06-14 11:49:27,800 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) [2024-06-14 11:49:27,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:27,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:49:27,800 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)] === [2024-06-14 11:49:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1335729485, now seen corresponding path program 3 times [2024-06-14 11:49:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28763677] [2024-06-14 11:49:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:28,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28763677] [2024-06-14 11:49:28,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28763677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:28,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:28,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698895060] [2024-06-14 11:49:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:28,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:28,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:28,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 280 transitions, 2258 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) [2024-06-14 11:49:28,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:28,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:28,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:29,780 INFO L124 PetriNetUnfolderBase]: 2702/4353 cut-off events. [2024-06-14 11:49:29,780 INFO L125 PetriNetUnfolderBase]: For 800997/801002 co-relation queries the response was YES. [2024-06-14 11:49:29,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43745 conditions, 4353 events. 2702/4353 cut-off events. For 800997/801002 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24914 event pairs, 673 based on Foata normal form. 4/4330 useless extension candidates. Maximal degree in co-relation 43638. Up to 3818 conditions per place. [2024-06-14 11:49:29,835 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 245 selfloop transitions, 26 changer transitions 0/295 dead transitions. [2024-06-14 11:49:29,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 295 transitions, 2910 flow [2024-06-14 11:49:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-14 11:49:29,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 11:49:29,836 INFO L175 Difference]: Start difference. First operand has 223 places, 280 transitions, 2258 flow. Second operand 7 states and 141 transitions. [2024-06-14 11:49:29,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 295 transitions, 2910 flow [2024-06-14 11:49:30,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 295 transitions, 2832 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:30,552 INFO L231 Difference]: Finished difference. Result has 225 places, 283 transitions, 2310 flow [2024-06-14 11:49:30,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2310, PETRI_PLACES=225, PETRI_TRANSITIONS=283} [2024-06-14 11:49:30,552 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 179 predicate places. [2024-06-14 11:49:30,552 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 283 transitions, 2310 flow [2024-06-14 11:49:30,552 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) [2024-06-14 11:49:30,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:30,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:30,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:49:30,553 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:30,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash 510755614, now seen corresponding path program 3 times [2024-06-14 11:49:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:30,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011026210] [2024-06-14 11:49:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011026210] [2024-06-14 11:49:31,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011026210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:31,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:31,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:49:31,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729363541] [2024-06-14 11:49:31,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:31,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:49:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:49:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:49:31,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:31,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 283 transitions, 2310 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) [2024-06-14 11:49:31,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:31,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:31,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:32,653 INFO L124 PetriNetUnfolderBase]: 2693/4341 cut-off events. [2024-06-14 11:49:32,653 INFO L125 PetriNetUnfolderBase]: For 813178/813183 co-relation queries the response was YES. [2024-06-14 11:49:32,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43942 conditions, 4341 events. 2693/4341 cut-off events. For 813178/813183 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24930 event pairs, 667 based on Foata normal form. 7/4321 useless extension candidates. Maximal degree in co-relation 43834. Up to 3806 conditions per place. [2024-06-14 11:49:32,703 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 245 selfloop transitions, 29 changer transitions 0/298 dead transitions. [2024-06-14 11:49:32,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 298 transitions, 2944 flow [2024-06-14 11:49:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:49:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:49:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-14 11:49:32,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:49:32,704 INFO L175 Difference]: Start difference. First operand has 225 places, 283 transitions, 2310 flow. Second operand 7 states and 140 transitions. [2024-06-14 11:49:32,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 298 transitions, 2944 flow [2024-06-14 11:49:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 298 transitions, 2836 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:33,424 INFO L231 Difference]: Finished difference. Result has 227 places, 286 transitions, 2331 flow [2024-06-14 11:49:33,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2331, PETRI_PLACES=227, PETRI_TRANSITIONS=286} [2024-06-14 11:49:33,425 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 181 predicate places. [2024-06-14 11:49:33,425 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 286 transitions, 2331 flow [2024-06-14 11:49:33,425 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) [2024-06-14 11:49:33,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:33,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:33,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:49:33,425 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)] === [2024-06-14 11:49:33,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash 883610178, now seen corresponding path program 1 times [2024-06-14 11:49:33,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:33,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768048767] [2024-06-14 11:49:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:33,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768048767] [2024-06-14 11:49:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768048767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27983021] [2024-06-14 11:49:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:34,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:34,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:34,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 286 transitions, 2331 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) [2024-06-14 11:49:34,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:34,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:34,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:36,074 INFO L124 PetriNetUnfolderBase]: 3072/4772 cut-off events. [2024-06-14 11:49:36,075 INFO L125 PetriNetUnfolderBase]: For 846850/846850 co-relation queries the response was YES. [2024-06-14 11:49:36,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47575 conditions, 4772 events. 3072/4772 cut-off events. For 846850/846850 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 26177 event pairs, 563 based on Foata normal form. 4/4773 useless extension candidates. Maximal degree in co-relation 47466. Up to 4379 conditions per place. [2024-06-14 11:49:36,131 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 310 selfloop transitions, 26 changer transitions 0/341 dead transitions. [2024-06-14 11:49:36,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 341 transitions, 3555 flow [2024-06-14 11:49:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-14 11:49:36,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-14 11:49:36,133 INFO L175 Difference]: Start difference. First operand has 227 places, 286 transitions, 2331 flow. Second operand 11 states and 216 transitions. [2024-06-14 11:49:36,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 341 transitions, 3555 flow [2024-06-14 11:49:37,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 341 transitions, 3450 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:37,065 INFO L231 Difference]: Finished difference. Result has 233 places, 290 transitions, 2433 flow [2024-06-14 11:49:37,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2433, PETRI_PLACES=233, PETRI_TRANSITIONS=290} [2024-06-14 11:49:37,066 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 187 predicate places. [2024-06-14 11:49:37,066 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 290 transitions, 2433 flow [2024-06-14 11:49:37,066 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) [2024-06-14 11:49:37,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:37,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:37,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:49:37,066 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)] === [2024-06-14 11:49:37,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash 886467138, now seen corresponding path program 2 times [2024-06-14 11:49:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804564001] [2024-06-14 11:49:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:38,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:38,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804564001] [2024-06-14 11:49:38,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804564001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:38,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:38,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:38,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638628562] [2024-06-14 11:49:38,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:38,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:38,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:38,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:38,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:38,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 290 transitions, 2433 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) [2024-06-14 11:49:38,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:38,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:38,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:39,659 INFO L124 PetriNetUnfolderBase]: 3064/4760 cut-off events. [2024-06-14 11:49:39,659 INFO L125 PetriNetUnfolderBase]: For 858414/858414 co-relation queries the response was YES. [2024-06-14 11:49:39,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47541 conditions, 4760 events. 3064/4760 cut-off events. For 858414/858414 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 26123 event pairs, 702 based on Foata normal form. 4/4761 useless extension candidates. Maximal degree in co-relation 47431. Up to 4426 conditions per place. [2024-06-14 11:49:39,714 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 307 selfloop transitions, 22 changer transitions 0/334 dead transitions. [2024-06-14 11:49:39,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 334 transitions, 3203 flow [2024-06-14 11:49:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-14 11:49:39,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2024-06-14 11:49:39,716 INFO L175 Difference]: Start difference. First operand has 233 places, 290 transitions, 2433 flow. Second operand 10 states and 196 transitions. [2024-06-14 11:49:39,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 334 transitions, 3203 flow [2024-06-14 11:49:40,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 334 transitions, 3043 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:40,791 INFO L231 Difference]: Finished difference. Result has 236 places, 290 transitions, 2324 flow [2024-06-14 11:49:40,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2324, PETRI_PLACES=236, PETRI_TRANSITIONS=290} [2024-06-14 11:49:40,791 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 190 predicate places. [2024-06-14 11:49:40,792 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 290 transitions, 2324 flow [2024-06-14 11:49:40,792 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) [2024-06-14 11:49:40,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:40,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:49:40,792 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)] === [2024-06-14 11:49:40,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -24692092, now seen corresponding path program 3 times [2024-06-14 11:49:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925318291] [2024-06-14 11:49:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925318291] [2024-06-14 11:49:41,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925318291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:41,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:41,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069415279] [2024-06-14 11:49:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:41,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:42,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:42,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 290 transitions, 2324 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) [2024-06-14 11:49:42,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:42,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:42,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:43,390 INFO L124 PetriNetUnfolderBase]: 3081/4788 cut-off events. [2024-06-14 11:49:43,391 INFO L125 PetriNetUnfolderBase]: For 882470/882473 co-relation queries the response was YES. [2024-06-14 11:49:43,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47768 conditions, 4788 events. 3081/4788 cut-off events. For 882470/882473 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 26349 event pairs, 706 based on Foata normal form. 6/4790 useless extension candidates. Maximal degree in co-relation 47656. Up to 4327 conditions per place. [2024-06-14 11:49:43,447 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 271 selfloop transitions, 57 changer transitions 0/333 dead transitions. [2024-06-14 11:49:43,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 333 transitions, 3160 flow [2024-06-14 11:49:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-14 11:49:43,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44222222222222224 [2024-06-14 11:49:43,449 INFO L175 Difference]: Start difference. First operand has 236 places, 290 transitions, 2324 flow. Second operand 10 states and 199 transitions. [2024-06-14 11:49:43,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 333 transitions, 3160 flow [2024-06-14 11:49:44,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 333 transitions, 3111 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:44,287 INFO L231 Difference]: Finished difference. Result has 237 places, 292 transitions, 2476 flow [2024-06-14 11:49:44,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2476, PETRI_PLACES=237, PETRI_TRANSITIONS=292} [2024-06-14 11:49:44,287 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 191 predicate places. [2024-06-14 11:49:44,287 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 292 transitions, 2476 flow [2024-06-14 11:49:44,288 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) [2024-06-14 11:49:44,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:44,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:44,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:49:44,288 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)] === [2024-06-14 11:49:44,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 140947042, now seen corresponding path program 4 times [2024-06-14 11:49:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:44,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187627272] [2024-06-14 11:49:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:44,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187627272] [2024-06-14 11:49:45,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187627272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:45,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:45,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432598384] [2024-06-14 11:49:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:45,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:45,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:45,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 292 transitions, 2476 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) [2024-06-14 11:49:45,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:45,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:45,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:46,911 INFO L124 PetriNetUnfolderBase]: 3098/4815 cut-off events. [2024-06-14 11:49:46,911 INFO L125 PetriNetUnfolderBase]: For 907337/907340 co-relation queries the response was YES. [2024-06-14 11:49:46,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48637 conditions, 4815 events. 3098/4815 cut-off events. For 907337/907340 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 26502 event pairs, 706 based on Foata normal form. 6/4817 useless extension candidates. Maximal degree in co-relation 48524. Up to 4354 conditions per place. [2024-06-14 11:49:46,972 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 272 selfloop transitions, 55 changer transitions 0/332 dead transitions. [2024-06-14 11:49:46,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 332 transitions, 3306 flow [2024-06-14 11:49:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-14 11:49:46,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43777777777777777 [2024-06-14 11:49:46,973 INFO L175 Difference]: Start difference. First operand has 237 places, 292 transitions, 2476 flow. Second operand 10 states and 197 transitions. [2024-06-14 11:49:46,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 332 transitions, 3306 flow [2024-06-14 11:49:47,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 332 transitions, 3123 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:47,808 INFO L231 Difference]: Finished difference. Result has 239 places, 294 transitions, 2494 flow [2024-06-14 11:49:47,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2494, PETRI_PLACES=239, PETRI_TRANSITIONS=294} [2024-06-14 11:49:47,809 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 193 predicate places. [2024-06-14 11:49:47,809 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 294 transitions, 2494 flow [2024-06-14 11:49:47,809 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) [2024-06-14 11:49:47,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:47,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:47,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:49:47,809 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)] === [2024-06-14 11:49:47,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:47,810 INFO L85 PathProgramCache]: Analyzing trace with hash 147627170, now seen corresponding path program 1 times [2024-06-14 11:49:47,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:47,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583277145] [2024-06-14 11:49:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:47,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583277145] [2024-06-14 11:49:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583277145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:49,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674922417] [2024-06-14 11:49:49,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:49,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:49,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:49:49,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 294 transitions, 2494 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) [2024-06-14 11:49:49,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:49,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:49:49,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:50,531 INFO L124 PetriNetUnfolderBase]: 3115/4842 cut-off events. [2024-06-14 11:49:50,532 INFO L125 PetriNetUnfolderBase]: For 931100/931103 co-relation queries the response was YES. [2024-06-14 11:49:50,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49098 conditions, 4842 events. 3115/4842 cut-off events. For 931100/931103 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 26690 event pairs, 657 based on Foata normal form. 4/4842 useless extension candidates. Maximal degree in co-relation 48984. Up to 4283 conditions per place. [2024-06-14 11:49:50,585 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 265 selfloop transitions, 68 changer transitions 0/338 dead transitions. [2024-06-14 11:49:50,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 338 transitions, 3358 flow [2024-06-14 11:49:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-14 11:49:50,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44222222222222224 [2024-06-14 11:49:50,586 INFO L175 Difference]: Start difference. First operand has 239 places, 294 transitions, 2494 flow. Second operand 10 states and 199 transitions. [2024-06-14 11:49:50,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 338 transitions, 3358 flow [2024-06-14 11:49:51,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 338 transitions, 3175 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:51,640 INFO L231 Difference]: Finished difference. Result has 242 places, 299 transitions, 2556 flow [2024-06-14 11:49:51,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2556, PETRI_PLACES=242, PETRI_TRANSITIONS=299} [2024-06-14 11:49:51,640 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 196 predicate places. [2024-06-14 11:49:51,640 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 299 transitions, 2556 flow [2024-06-14 11:49:51,640 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) [2024-06-14 11:49:51,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:51,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:51,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:49:51,641 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:51,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1497547034, now seen corresponding path program 1 times [2024-06-14 11:49:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:51,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230627607] [2024-06-14 11:49:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:51,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:52,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230627607] [2024-06-14 11:49:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230627607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:52,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:52,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:49:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826854666] [2024-06-14 11:49:52,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:52,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:49:52,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:49:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:49:52,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:52,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 299 transitions, 2556 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) [2024-06-14 11:49:52,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:52,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:52,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:53,826 INFO L124 PetriNetUnfolderBase]: 2711/4392 cut-off events. [2024-06-14 11:49:53,826 INFO L125 PetriNetUnfolderBase]: For 938833/938839 co-relation queries the response was YES. [2024-06-14 11:49:53,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47149 conditions, 4392 events. 2711/4392 cut-off events. For 938833/938839 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 25479 event pairs, 630 based on Foata normal form. 2/4355 useless extension candidates. Maximal degree in co-relation 47033. Up to 3804 conditions per place. [2024-06-14 11:49:53,882 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 266 selfloop transitions, 19 changer transitions 0/331 dead transitions. [2024-06-14 11:49:53,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 331 transitions, 3266 flow [2024-06-14 11:49:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:49:53,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:49:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-14 11:49:53,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-14 11:49:53,883 INFO L175 Difference]: Start difference. First operand has 242 places, 299 transitions, 2556 flow. Second operand 8 states and 169 transitions. [2024-06-14 11:49:53,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 331 transitions, 3266 flow [2024-06-14 11:49:55,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 331 transitions, 3063 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:55,008 INFO L231 Difference]: Finished difference. Result has 243 places, 302 transitions, 2470 flow [2024-06-14 11:49:55,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2470, PETRI_PLACES=243, PETRI_TRANSITIONS=302} [2024-06-14 11:49:55,009 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 197 predicate places. [2024-06-14 11:49:55,009 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 302 transitions, 2470 flow [2024-06-14 11:49:55,009 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) [2024-06-14 11:49:55,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:55,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:49:55,009 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:55,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -65088860, now seen corresponding path program 1 times [2024-06-14 11:49:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279679675] [2024-06-14 11:49:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:56,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:56,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279679675] [2024-06-14 11:49:56,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279679675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:56,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:56,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:49:56,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479194298] [2024-06-14 11:49:56,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:56,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:49:56,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:49:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:49:56,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:56,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 302 transitions, 2470 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) [2024-06-14 11:49:56,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:56,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:56,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:57,282 INFO L124 PetriNetUnfolderBase]: 2716/4404 cut-off events. [2024-06-14 11:49:57,282 INFO L125 PetriNetUnfolderBase]: For 957109/957117 co-relation queries the response was YES. [2024-06-14 11:49:57,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47429 conditions, 4404 events. 2716/4404 cut-off events. For 957109/957117 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 25576 event pairs, 629 based on Foata normal form. 1/4373 useless extension candidates. Maximal degree in co-relation 47312. Up to 3826 conditions per place. [2024-06-14 11:49:57,339 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 265 selfloop transitions, 17 changer transitions 0/328 dead transitions. [2024-06-14 11:49:57,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 328 transitions, 3146 flow [2024-06-14 11:49:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:49:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:49:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-14 11:49:57,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-14 11:49:57,341 INFO L175 Difference]: Start difference. First operand has 243 places, 302 transitions, 2470 flow. Second operand 8 states and 163 transitions. [2024-06-14 11:49:57,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 328 transitions, 3146 flow [2024-06-14 11:49:58,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 328 transitions, 3053 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-14 11:49:58,425 INFO L231 Difference]: Finished difference. Result has 245 places, 305 transitions, 2477 flow [2024-06-14 11:49:58,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2477, PETRI_PLACES=245, PETRI_TRANSITIONS=305} [2024-06-14 11:49:58,425 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 199 predicate places. [2024-06-14 11:49:58,425 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 305 transitions, 2477 flow [2024-06-14 11:49:58,426 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) [2024-06-14 11:49:58,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:58,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:58,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:49:58,426 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:49:58,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash -65089294, now seen corresponding path program 2 times [2024-06-14 11:49:58,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:58,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760058637] [2024-06-14 11:49:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:58,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760058637] [2024-06-14 11:49:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760058637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:59,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:59,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:49:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636751536] [2024-06-14 11:49:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:59,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:49:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:59,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:49:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:49:59,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:49:59,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 305 transitions, 2477 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) [2024-06-14 11:49:59,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:59,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:49:59,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:00,611 INFO L124 PetriNetUnfolderBase]: 2721/4415 cut-off events. [2024-06-14 11:50:00,611 INFO L125 PetriNetUnfolderBase]: For 978787/978795 co-relation queries the response was YES. [2024-06-14 11:50:00,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47999 conditions, 4415 events. 2721/4415 cut-off events. For 978787/978795 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25738 event pairs, 629 based on Foata normal form. 1/4384 useless extension candidates. Maximal degree in co-relation 47881. Up to 3812 conditions per place. [2024-06-14 11:50:00,685 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 261 selfloop transitions, 24 changer transitions 0/331 dead transitions. [2024-06-14 11:50:00,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 331 transitions, 3179 flow [2024-06-14 11:50:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:50:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:50:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-14 11:50:00,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 11:50:00,686 INFO L175 Difference]: Start difference. First operand has 245 places, 305 transitions, 2477 flow. Second operand 8 states and 165 transitions. [2024-06-14 11:50:00,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 331 transitions, 3179 flow [2024-06-14 11:50:01,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 331 transitions, 3101 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:01,753 INFO L231 Difference]: Finished difference. Result has 247 places, 308 transitions, 2533 flow [2024-06-14 11:50:01,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2533, PETRI_PLACES=247, PETRI_TRANSITIONS=308} [2024-06-14 11:50:01,754 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 201 predicate places. [2024-06-14 11:50:01,754 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 308 transitions, 2533 flow [2024-06-14 11:50:01,754 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) [2024-06-14 11:50:01,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:01,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:01,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:50:01,754 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:01,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1380918606, now seen corresponding path program 1 times [2024-06-14 11:50:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:01,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310007487] [2024-06-14 11:50:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:02,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:02,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310007487] [2024-06-14 11:50:02,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310007487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:02,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:02,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:50:02,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165529283] [2024-06-14 11:50:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:02,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:50:02,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:50:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:50:02,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:50:02,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 308 transitions, 2533 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) [2024-06-14 11:50:02,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:02,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:50:02,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:03,682 INFO L124 PetriNetUnfolderBase]: 2993/4716 cut-off events. [2024-06-14 11:50:03,682 INFO L125 PetriNetUnfolderBase]: For 1009132/1009135 co-relation queries the response was YES. [2024-06-14 11:50:03,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50331 conditions, 4716 events. 2993/4716 cut-off events. For 1009132/1009135 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26517 event pairs, 658 based on Foata normal form. 3/4694 useless extension candidates. Maximal degree in co-relation 50212. Up to 4277 conditions per place. [2024-06-14 11:50:03,745 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 289 selfloop transitions, 19 changer transitions 0/330 dead transitions. [2024-06-14 11:50:03,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 330 transitions, 3281 flow [2024-06-14 11:50:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:50:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:50:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-14 11:50:03,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:50:03,746 INFO L175 Difference]: Start difference. First operand has 247 places, 308 transitions, 2533 flow. Second operand 7 states and 140 transitions. [2024-06-14 11:50:03,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 330 transitions, 3281 flow [2024-06-14 11:50:04,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 330 transitions, 3169 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:04,966 INFO L231 Difference]: Finished difference. Result has 248 places, 311 transitions, 2555 flow [2024-06-14 11:50:04,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2555, PETRI_PLACES=248, PETRI_TRANSITIONS=311} [2024-06-14 11:50:04,966 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 202 predicate places. [2024-06-14 11:50:04,966 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 311 transitions, 2555 flow [2024-06-14 11:50:04,966 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) [2024-06-14 11:50:04,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:04,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:04,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:50:04,967 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)] === [2024-06-14 11:50:04,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1509933146, now seen corresponding path program 2 times [2024-06-14 11:50:04,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:04,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694043966] [2024-06-14 11:50:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:04,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:05,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:05,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694043966] [2024-06-14 11:50:05,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694043966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:05,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:05,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:50:05,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821962621] [2024-06-14 11:50:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:05,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:50:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:50:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:50:06,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:50:06,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 311 transitions, 2555 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) [2024-06-14 11:50:06,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:06,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:50:06,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:07,044 INFO L124 PetriNetUnfolderBase]: 3006/4734 cut-off events. [2024-06-14 11:50:07,044 INFO L125 PetriNetUnfolderBase]: For 1035408/1035411 co-relation queries the response was YES. [2024-06-14 11:50:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51129 conditions, 4734 events. 3006/4734 cut-off events. For 1035408/1035411 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26660 event pairs, 658 based on Foata normal form. 3/4712 useless extension candidates. Maximal degree in co-relation 51009. Up to 4285 conditions per place. [2024-06-14 11:50:07,112 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 285 selfloop transitions, 27 changer transitions 0/334 dead transitions. [2024-06-14 11:50:07,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 334 transitions, 3577 flow [2024-06-14 11:50:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:50:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:50:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-14 11:50:07,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2024-06-14 11:50:07,113 INFO L175 Difference]: Start difference. First operand has 248 places, 311 transitions, 2555 flow. Second operand 7 states and 139 transitions. [2024-06-14 11:50:07,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 334 transitions, 3577 flow [2024-06-14 11:50:08,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 334 transitions, 3465 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-14 11:50:08,449 INFO L231 Difference]: Finished difference. Result has 250 places, 317 transitions, 2689 flow [2024-06-14 11:50:08,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2689, PETRI_PLACES=250, PETRI_TRANSITIONS=317} [2024-06-14 11:50:08,450 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 204 predicate places. [2024-06-14 11:50:08,450 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 317 transitions, 2689 flow [2024-06-14 11:50:08,450 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) [2024-06-14 11:50:08,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:08,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:08,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:50:08,450 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:08,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1929519078, now seen corresponding path program 5 times [2024-06-14 11:50:08,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:08,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130585771] [2024-06-14 11:50:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:09,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130585771] [2024-06-14 11:50:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130585771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:09,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:09,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:50:09,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516516013] [2024-06-14 11:50:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:09,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:50:09,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:09,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:50:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:50:09,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:50:09,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 317 transitions, 2689 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) [2024-06-14 11:50:09,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:09,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:50:09,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:11,056 INFO L124 PetriNetUnfolderBase]: 3175/4928 cut-off events. [2024-06-14 11:50:11,056 INFO L125 PetriNetUnfolderBase]: For 1074968/1074971 co-relation queries the response was YES. [2024-06-14 11:50:11,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53114 conditions, 4928 events. 3175/4928 cut-off events. For 1074968/1074971 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 27189 event pairs, 673 based on Foata normal form. 6/4930 useless extension candidates. Maximal degree in co-relation 52993. Up to 4468 conditions per place. [2024-06-14 11:50:11,119 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 295 selfloop transitions, 54 changer transitions 0/354 dead transitions. [2024-06-14 11:50:11,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 354 transitions, 3565 flow [2024-06-14 11:50:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-14 11:50:11,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 11:50:11,120 INFO L175 Difference]: Start difference. First operand has 250 places, 317 transitions, 2689 flow. Second operand 10 states and 195 transitions. [2024-06-14 11:50:11,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 354 transitions, 3565 flow [2024-06-14 11:50:12,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 354 transitions, 3449 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-14 11:50:12,009 INFO L231 Difference]: Finished difference. Result has 257 places, 319 transitions, 2782 flow [2024-06-14 11:50:12,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2782, PETRI_PLACES=257, PETRI_TRANSITIONS=319} [2024-06-14 11:50:12,009 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 211 predicate places. [2024-06-14 11:50:12,009 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 319 transitions, 2782 flow [2024-06-14 11:50:12,009 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) [2024-06-14 11:50:12,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:12,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:12,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:50:12,010 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:12,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash -337174074, now seen corresponding path program 2 times [2024-06-14 11:50:12,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:12,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340183645] [2024-06-14 11:50:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:12,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:13,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:13,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340183645] [2024-06-14 11:50:13,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340183645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:13,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:13,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:50:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365640715] [2024-06-14 11:50:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:13,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:50:13,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:13,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:50:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:50:13,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:50:13,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 319 transitions, 2782 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) [2024-06-14 11:50:13,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:13,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:50:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:14,787 INFO L124 PetriNetUnfolderBase]: 3203/4976 cut-off events. [2024-06-14 11:50:14,787 INFO L125 PetriNetUnfolderBase]: For 1101773/1101776 co-relation queries the response was YES. [2024-06-14 11:50:14,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54003 conditions, 4976 events. 3203/4976 cut-off events. For 1101773/1101776 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 27547 event pairs, 651 based on Foata normal form. 4/4976 useless extension candidates. Maximal degree in co-relation 53880. Up to 4409 conditions per place. [2024-06-14 11:50:14,844 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 289 selfloop transitions, 71 changer transitions 0/365 dead transitions. [2024-06-14 11:50:14,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 365 transitions, 3739 flow [2024-06-14 11:50:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-14 11:50:14,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43777777777777777 [2024-06-14 11:50:14,845 INFO L175 Difference]: Start difference. First operand has 257 places, 319 transitions, 2782 flow. Second operand 10 states and 197 transitions. [2024-06-14 11:50:14,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 365 transitions, 3739 flow [2024-06-14 11:50:15,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 365 transitions, 3548 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:15,755 INFO L231 Difference]: Finished difference. Result has 260 places, 329 transitions, 2896 flow [2024-06-14 11:50:15,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2591, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2896, PETRI_PLACES=260, PETRI_TRANSITIONS=329} [2024-06-14 11:50:15,756 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 214 predicate places. [2024-06-14 11:50:15,756 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 329 transitions, 2896 flow [2024-06-14 11:50:15,756 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) [2024-06-14 11:50:15,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:15,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:15,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:50:15,756 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:15,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1936199206, now seen corresponding path program 3 times [2024-06-14 11:50:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:15,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453163812] [2024-06-14 11:50:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:15,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453163812] [2024-06-14 11:50:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453163812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:50:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92539597] [2024-06-14 11:50:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:17,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:50:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:50:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:50:17,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:50:17,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 329 transitions, 2896 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) [2024-06-14 11:50:17,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:17,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:50:17,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:18,564 INFO L124 PetriNetUnfolderBase]: 3220/5018 cut-off events. [2024-06-14 11:50:18,565 INFO L125 PetriNetUnfolderBase]: For 1127529/1127532 co-relation queries the response was YES. [2024-06-14 11:50:18,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54888 conditions, 5018 events. 3220/5018 cut-off events. For 1127529/1127532 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 27969 event pairs, 666 based on Foata normal form. 4/5018 useless extension candidates. Maximal degree in co-relation 54763. Up to 4436 conditions per place. [2024-06-14 11:50:18,630 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 294 selfloop transitions, 69 changer transitions 0/368 dead transitions. [2024-06-14 11:50:18,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 368 transitions, 3819 flow [2024-06-14 11:50:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-14 11:50:18,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44222222222222224 [2024-06-14 11:50:18,632 INFO L175 Difference]: Start difference. First operand has 260 places, 329 transitions, 2896 flow. Second operand 10 states and 199 transitions. [2024-06-14 11:50:18,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 368 transitions, 3819 flow [2024-06-14 11:50:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 368 transitions, 3620 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-14 11:50:19,568 INFO L231 Difference]: Finished difference. Result has 266 places, 332 transitions, 2951 flow [2024-06-14 11:50:19,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2951, PETRI_PLACES=266, PETRI_TRANSITIONS=332} [2024-06-14 11:50:19,568 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 220 predicate places. [2024-06-14 11:50:19,568 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 332 transitions, 2951 flow [2024-06-14 11:50:19,568 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) [2024-06-14 11:50:19,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:19,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:19,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:50:19,569 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)] === [2024-06-14 11:50:19,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash -345217644, now seen corresponding path program 4 times [2024-06-14 11:50:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:19,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227416680] [2024-06-14 11:50:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:19,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:20,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227416680] [2024-06-14 11:50:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227416680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:20,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:20,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:50:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876608234] [2024-06-14 11:50:20,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:20,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:50:20,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:20,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:50:20,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:50:20,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:50:20,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 332 transitions, 2951 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) [2024-06-14 11:50:20,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:20,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:50:20,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:22,346 INFO L124 PetriNetUnfolderBase]: 3237/5040 cut-off events. [2024-06-14 11:50:22,346 INFO L125 PetriNetUnfolderBase]: For 1150111/1150114 co-relation queries the response was YES. [2024-06-14 11:50:22,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54876 conditions, 5040 events. 3237/5040 cut-off events. For 1150111/1150114 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28047 event pairs, 666 based on Foata normal form. 4/5040 useless extension candidates. Maximal degree in co-relation 54749. Up to 4463 conditions per place. [2024-06-14 11:50:22,413 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 295 selfloop transitions, 70 changer transitions 0/370 dead transitions. [2024-06-14 11:50:22,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 370 transitions, 3863 flow [2024-06-14 11:50:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-14 11:50:22,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-14 11:50:22,414 INFO L175 Difference]: Start difference. First operand has 266 places, 332 transitions, 2951 flow. Second operand 10 states and 198 transitions. [2024-06-14 11:50:22,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 370 transitions, 3863 flow [2024-06-14 11:50:23,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 370 transitions, 3650 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-14 11:50:23,401 INFO L231 Difference]: Finished difference. Result has 269 places, 334 transitions, 2973 flow [2024-06-14 11:50:23,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2973, PETRI_PLACES=269, PETRI_TRANSITIONS=334} [2024-06-14 11:50:23,402 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 223 predicate places. [2024-06-14 11:50:23,402 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 334 transitions, 2973 flow [2024-06-14 11:50:23,402 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) [2024-06-14 11:50:23,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:23,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:23,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:50:23,402 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)] === [2024-06-14 11:50:23,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash -336875544, now seen corresponding path program 5 times [2024-06-14 11:50:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:23,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106662607] [2024-06-14 11:50:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:24,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:24,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106662607] [2024-06-14 11:50:24,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106662607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:24,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:24,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:50:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39748332] [2024-06-14 11:50:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:24,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:50:24,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:24,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:50:24,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:50:24,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:50:24,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 334 transitions, 2973 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) [2024-06-14 11:50:24,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:24,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:50:24,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:26,497 INFO L124 PetriNetUnfolderBase]: 3254/5067 cut-off events. [2024-06-14 11:50:26,497 INFO L125 PetriNetUnfolderBase]: For 1176237/1176240 co-relation queries the response was YES. [2024-06-14 11:50:26,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55422 conditions, 5067 events. 3254/5067 cut-off events. For 1176237/1176240 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 28272 event pairs, 662 based on Foata normal form. 4/5067 useless extension candidates. Maximal degree in co-relation 55294. Up to 4395 conditions per place. [2024-06-14 11:50:26,559 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 287 selfloop transitions, 81 changer transitions 0/373 dead transitions. [2024-06-14 11:50:26,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 373 transitions, 3897 flow [2024-06-14 11:50:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:26,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:26,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-14 11:50:26,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-14 11:50:26,562 INFO L175 Difference]: Start difference. First operand has 269 places, 334 transitions, 2973 flow. Second operand 10 states and 198 transitions. [2024-06-14 11:50:26,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 373 transitions, 3897 flow [2024-06-14 11:50:27,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 373 transitions, 3648 flow, removed 43 selfloop flow, removed 11 redundant places. [2024-06-14 11:50:27,621 INFO L231 Difference]: Finished difference. Result has 268 places, 336 transitions, 2985 flow [2024-06-14 11:50:27,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2985, PETRI_PLACES=268, PETRI_TRANSITIONS=336} [2024-06-14 11:50:27,621 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 222 predicate places. [2024-06-14 11:50:27,622 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 336 transitions, 2985 flow [2024-06-14 11:50:27,622 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) [2024-06-14 11:50:27,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:27,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:27,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:50:27,622 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1509927194, now seen corresponding path program 3 times [2024-06-14 11:50:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:27,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248957015] [2024-06-14 11:50:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:27,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:28,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248957015] [2024-06-14 11:50:28,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248957015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:28,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:28,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:50:28,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760953232] [2024-06-14 11:50:28,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:28,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:50:28,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:50:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:50:28,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:50:28,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 336 transitions, 2985 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) [2024-06-14 11:50:28,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:28,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:50:28,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:29,898 INFO L124 PetriNetUnfolderBase]: 2835/4592 cut-off events. [2024-06-14 11:50:29,899 INFO L125 PetriNetUnfolderBase]: For 1178204/1178214 co-relation queries the response was YES. [2024-06-14 11:50:29,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52859 conditions, 4592 events. 2835/4592 cut-off events. For 1178204/1178214 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 26877 event pairs, 633 based on Foata normal form. 1/4547 useless extension candidates. Maximal degree in co-relation 52733. Up to 3969 conditions per place. [2024-06-14 11:50:29,959 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 275 selfloop transitions, 31 changer transitions 0/356 dead transitions. [2024-06-14 11:50:29,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 356 transitions, 3723 flow [2024-06-14 11:50:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:50:29,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:50:29,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 11:50:29,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-14 11:50:29,960 INFO L175 Difference]: Start difference. First operand has 268 places, 336 transitions, 2985 flow. Second operand 8 states and 161 transitions. [2024-06-14 11:50:29,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 356 transitions, 3723 flow [2024-06-14 11:50:31,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 356 transitions, 3480 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:31,279 INFO L231 Difference]: Finished difference. Result has 268 places, 339 transitions, 2900 flow [2024-06-14 11:50:31,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2900, PETRI_PLACES=268, PETRI_TRANSITIONS=339} [2024-06-14 11:50:31,280 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 222 predicate places. [2024-06-14 11:50:31,280 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 339 transitions, 2900 flow [2024-06-14 11:50:31,280 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) [2024-06-14 11:50:31,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:31,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:31,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:50:31,280 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:31,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:31,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1509927628, now seen corresponding path program 2 times [2024-06-14 11:50:31,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:31,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235189029] [2024-06-14 11:50:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:31,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:32,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235189029] [2024-06-14 11:50:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235189029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:32,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:32,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:50:32,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547707041] [2024-06-14 11:50:32,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:32,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:50:32,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:50:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:50:32,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:50:32,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 339 transitions, 2900 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) [2024-06-14 11:50:32,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:32,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:50:32,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:33,566 INFO L124 PetriNetUnfolderBase]: 2840/4594 cut-off events. [2024-06-14 11:50:33,567 INFO L125 PetriNetUnfolderBase]: For 1200104/1200116 co-relation queries the response was YES. [2024-06-14 11:50:33,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53017 conditions, 4594 events. 2840/4594 cut-off events. For 1200104/1200116 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26837 event pairs, 628 based on Foata normal form. 1/4542 useless extension candidates. Maximal degree in co-relation 52890. Up to 4000 conditions per place. [2024-06-14 11:50:33,630 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 287 selfloop transitions, 22 changer transitions 0/359 dead transitions. [2024-06-14 11:50:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 359 transitions, 3632 flow [2024-06-14 11:50:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:50:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:50:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-14 11:50:33,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-14 11:50:33,631 INFO L175 Difference]: Start difference. First operand has 268 places, 339 transitions, 2900 flow. Second operand 8 states and 159 transitions. [2024-06-14 11:50:33,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 359 transitions, 3632 flow [2024-06-14 11:50:35,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 359 transitions, 3496 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:35,184 INFO L231 Difference]: Finished difference. Result has 270 places, 342 transitions, 2892 flow [2024-06-14 11:50:35,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2892, PETRI_PLACES=270, PETRI_TRANSITIONS=342} [2024-06-14 11:50:35,184 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 224 predicate places. [2024-06-14 11:50:35,184 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 342 transitions, 2892 flow [2024-06-14 11:50:35,184 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) [2024-06-14 11:50:35,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:35,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:35,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:50:35,185 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:35,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1509942074, now seen corresponding path program 1 times [2024-06-14 11:50:35,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:35,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757722719] [2024-06-14 11:50:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:35,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:36,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757722719] [2024-06-14 11:50:36,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757722719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:36,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:36,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:50:36,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916717603] [2024-06-14 11:50:36,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:36,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:50:36,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:36,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:50:36,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:50:36,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:50:36,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 342 transitions, 2892 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:36,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:36,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:50:36,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:37,518 INFO L124 PetriNetUnfolderBase]: 2699/4425 cut-off events. [2024-06-14 11:50:37,518 INFO L125 PetriNetUnfolderBase]: For 1218135/1218157 co-relation queries the response was YES. [2024-06-14 11:50:37,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52227 conditions, 4425 events. 2699/4425 cut-off events. For 1218135/1218157 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26253 event pairs, 617 based on Foata normal form. 1/4355 useless extension candidates. Maximal degree in co-relation 52099. Up to 3685 conditions per place. [2024-06-14 11:50:37,581 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 270 selfloop transitions, 17 changer transitions 0/362 dead transitions. [2024-06-14 11:50:37,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 362 transitions, 3580 flow [2024-06-14 11:50:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:50:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:50:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-14 11:50:37,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-14 11:50:37,582 INFO L175 Difference]: Start difference. First operand has 270 places, 342 transitions, 2892 flow. Second operand 8 states and 164 transitions. [2024-06-14 11:50:37,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 362 transitions, 3580 flow [2024-06-14 11:50:38,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 362 transitions, 3474 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:38,781 INFO L231 Difference]: Finished difference. Result has 272 places, 345 transitions, 2904 flow [2024-06-14 11:50:38,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2904, PETRI_PLACES=272, PETRI_TRANSITIONS=345} [2024-06-14 11:50:38,781 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 226 predicate places. [2024-06-14 11:50:38,781 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 345 transitions, 2904 flow [2024-06-14 11:50:38,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:38,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:38,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:38,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:50:38,782 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)] === [2024-06-14 11:50:38,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1509941578, now seen corresponding path program 3 times [2024-06-14 11:50:38,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:38,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352097955] [2024-06-14 11:50:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:38,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:40,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352097955] [2024-06-14 11:50:40,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352097955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:40,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:40,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:50:40,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524864572] [2024-06-14 11:50:40,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:40,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:50:40,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:40,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:50:40,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:50:40,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:50:40,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 345 transitions, 2904 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) [2024-06-14 11:50:40,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:40,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:50:40,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:41,259 INFO L124 PetriNetUnfolderBase]: 2856/4614 cut-off events. [2024-06-14 11:50:41,259 INFO L125 PetriNetUnfolderBase]: For 1238861/1238873 co-relation queries the response was YES. [2024-06-14 11:50:41,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54314 conditions, 4614 events. 2856/4614 cut-off events. For 1238861/1238873 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 26885 event pairs, 627 based on Foata normal form. 1/4562 useless extension candidates. Maximal degree in co-relation 54185. Up to 4005 conditions per place. [2024-06-14 11:50:41,317 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 285 selfloop transitions, 30 changer transitions 0/365 dead transitions. [2024-06-14 11:50:41,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 365 transitions, 3656 flow [2024-06-14 11:50:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:50:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:50:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 11:50:41,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:50:41,318 INFO L175 Difference]: Start difference. First operand has 272 places, 345 transitions, 2904 flow. Second operand 8 states and 160 transitions. [2024-06-14 11:50:41,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 365 transitions, 3656 flow [2024-06-14 11:50:42,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 365 transitions, 3560 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:42,984 INFO L231 Difference]: Finished difference. Result has 274 places, 348 transitions, 2960 flow [2024-06-14 11:50:42,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2960, PETRI_PLACES=274, PETRI_TRANSITIONS=348} [2024-06-14 11:50:42,984 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 228 predicate places. [2024-06-14 11:50:42,984 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 348 transitions, 2960 flow [2024-06-14 11:50:42,985 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) [2024-06-14 11:50:42,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:42,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:42,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:50:42,985 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)] === [2024-06-14 11:50:42,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1533465394, now seen corresponding path program 3 times [2024-06-14 11:50:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:42,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273968580] [2024-06-14 11:50:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:43,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273968580] [2024-06-14 11:50:43,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273968580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:43,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:43,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:50:43,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157797483] [2024-06-14 11:50:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:43,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:50:43,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:50:43,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:50:43,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:50:43,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 348 transitions, 2960 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) [2024-06-14 11:50:43,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:43,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:50:43,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:45,007 INFO L124 PetriNetUnfolderBase]: 3142/4962 cut-off events. [2024-06-14 11:50:45,007 INFO L125 PetriNetUnfolderBase]: For 1265430/1265439 co-relation queries the response was YES. [2024-06-14 11:50:45,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56406 conditions, 4962 events. 3142/4962 cut-off events. For 1265430/1265439 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 28252 event pairs, 675 based on Foata normal form. 7/4950 useless extension candidates. Maximal degree in co-relation 56276. Up to 4449 conditions per place. [2024-06-14 11:50:45,070 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 314 selfloop transitions, 19 changer transitions 0/364 dead transitions. [2024-06-14 11:50:45,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 364 transitions, 3666 flow [2024-06-14 11:50:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:50:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:50:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-14 11:50:45,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2024-06-14 11:50:45,071 INFO L175 Difference]: Start difference. First operand has 274 places, 348 transitions, 2960 flow. Second operand 7 states and 137 transitions. [2024-06-14 11:50:45,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 364 transitions, 3666 flow [2024-06-14 11:50:46,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 364 transitions, 3478 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:46,844 INFO L231 Difference]: Finished difference. Result has 275 places, 348 transitions, 2816 flow [2024-06-14 11:50:46,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2816, PETRI_PLACES=275, PETRI_TRANSITIONS=348} [2024-06-14 11:50:46,845 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 229 predicate places. [2024-06-14 11:50:46,845 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 348 transitions, 2816 flow [2024-06-14 11:50:46,845 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) [2024-06-14 11:50:46,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:46,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:46,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:50:46,845 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)] === [2024-06-14 11:50:46,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1519180594, now seen corresponding path program 4 times [2024-06-14 11:50:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385269258] [2024-06-14 11:50:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:46,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:47,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:47,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385269258] [2024-06-14 11:50:47,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385269258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:47,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:47,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:50:47,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826188759] [2024-06-14 11:50:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:50:47,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:50:47,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:50:47,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:50:47,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 348 transitions, 2816 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) [2024-06-14 11:50:47,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:47,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:50:47,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:48,906 INFO L124 PetriNetUnfolderBase]: 3147/4969 cut-off events. [2024-06-14 11:50:48,906 INFO L125 PetriNetUnfolderBase]: For 1295494/1295505 co-relation queries the response was YES. [2024-06-14 11:50:48,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56636 conditions, 4969 events. 3147/4969 cut-off events. For 1295494/1295505 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28280 event pairs, 675 based on Foata normal form. 9/4966 useless extension candidates. Maximal degree in co-relation 56505. Up to 4447 conditions per place. [2024-06-14 11:50:48,975 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 306 selfloop transitions, 27 changer transitions 0/364 dead transitions. [2024-06-14 11:50:48,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 364 transitions, 3616 flow [2024-06-14 11:50:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:50:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:50:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-14 11:50:48,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 11:50:48,978 INFO L175 Difference]: Start difference. First operand has 275 places, 348 transitions, 2816 flow. Second operand 7 states and 135 transitions. [2024-06-14 11:50:48,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 364 transitions, 3616 flow [2024-06-14 11:50:51,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 364 transitions, 3558 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:51,042 INFO L231 Difference]: Finished difference. Result has 276 places, 351 transitions, 2926 flow [2024-06-14 11:50:51,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2926, PETRI_PLACES=276, PETRI_TRANSITIONS=351} [2024-06-14 11:50:51,043 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 230 predicate places. [2024-06-14 11:50:51,043 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 351 transitions, 2926 flow [2024-06-14 11:50:51,043 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) [2024-06-14 11:50:51,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:51,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:51,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:50:51,044 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)] === [2024-06-14 11:50:51,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:51,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1346690704, now seen corresponding path program 5 times [2024-06-14 11:50:51,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:51,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705828099] [2024-06-14 11:50:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:51,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:52,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:52,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705828099] [2024-06-14 11:50:52,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705828099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:52,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:52,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:50:52,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916731154] [2024-06-14 11:50:52,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:52,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:50:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:50:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:50:52,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:50:52,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 351 transitions, 2926 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) [2024-06-14 11:50:52,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:52,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:50:52,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:53,220 INFO L124 PetriNetUnfolderBase]: 3152/4978 cut-off events. [2024-06-14 11:50:53,221 INFO L125 PetriNetUnfolderBase]: For 1315907/1315919 co-relation queries the response was YES. [2024-06-14 11:50:53,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57355 conditions, 4978 events. 3152/4978 cut-off events. For 1315907/1315919 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28391 event pairs, 687 based on Foata normal form. 9/4966 useless extension candidates. Maximal degree in co-relation 57223. Up to 4432 conditions per place. [2024-06-14 11:50:53,293 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 293 selfloop transitions, 44 changer transitions 0/368 dead transitions. [2024-06-14 11:50:53,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 368 transitions, 4042 flow [2024-06-14 11:50:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:50:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:50:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-14 11:50:53,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 11:50:53,294 INFO L175 Difference]: Start difference. First operand has 276 places, 351 transitions, 2926 flow. Second operand 7 states and 135 transitions. [2024-06-14 11:50:53,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 368 transitions, 4042 flow [2024-06-14 11:50:55,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 368 transitions, 3896 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-14 11:50:55,260 INFO L231 Difference]: Finished difference. Result has 278 places, 357 transitions, 3096 flow [2024-06-14 11:50:55,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3096, PETRI_PLACES=278, PETRI_TRANSITIONS=357} [2024-06-14 11:50:55,261 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 232 predicate places. [2024-06-14 11:50:55,261 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 357 transitions, 3096 flow [2024-06-14 11:50:55,261 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) [2024-06-14 11:50:55,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:55,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:55,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:50:55,261 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)] === [2024-06-14 11:50:55,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash 789729680, now seen corresponding path program 6 times [2024-06-14 11:50:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:55,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002273503] [2024-06-14 11:50:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:55,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:56,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002273503] [2024-06-14 11:50:56,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002273503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:56,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:56,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:50:56,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835175189] [2024-06-14 11:50:56,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:56,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:50:56,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:56,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:50:56,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:50:56,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:50:56,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 357 transitions, 3096 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) [2024-06-14 11:50:56,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:56,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:50:56,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:57,446 INFO L124 PetriNetUnfolderBase]: 3149/4974 cut-off events. [2024-06-14 11:50:57,446 INFO L125 PetriNetUnfolderBase]: For 1339028/1339040 co-relation queries the response was YES. [2024-06-14 11:50:57,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57724 conditions, 4974 events. 3149/4974 cut-off events. For 1339028/1339040 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28371 event pairs, 687 based on Foata normal form. 9/4962 useless extension candidates. Maximal degree in co-relation 57591. Up to 4429 conditions per place. [2024-06-14 11:50:57,515 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 292 selfloop transitions, 44 changer transitions 0/367 dead transitions. [2024-06-14 11:50:57,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 367 transitions, 3792 flow [2024-06-14 11:50:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:50:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:50:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-14 11:50:57,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4253968253968254 [2024-06-14 11:50:57,516 INFO L175 Difference]: Start difference. First operand has 278 places, 357 transitions, 3096 flow. Second operand 7 states and 134 transitions. [2024-06-14 11:50:57,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 367 transitions, 3792 flow [2024-06-14 11:50:59,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 367 transitions, 3554 flow, removed 100 selfloop flow, removed 3 redundant places. [2024-06-14 11:50:59,565 INFO L231 Difference]: Finished difference. Result has 282 places, 357 transitions, 2952 flow [2024-06-14 11:50:59,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2858, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2952, PETRI_PLACES=282, PETRI_TRANSITIONS=357} [2024-06-14 11:50:59,565 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 236 predicate places. [2024-06-14 11:50:59,565 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 357 transitions, 2952 flow [2024-06-14 11:50:59,565 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) [2024-06-14 11:50:59,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:59,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:59,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:50:59,565 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:50:59,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:59,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1151964158, now seen corresponding path program 6 times [2024-06-14 11:50:59,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:59,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047155777] [2024-06-14 11:50:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:59,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047155777] [2024-06-14 11:51:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047155777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:00,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:00,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607819193] [2024-06-14 11:51:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:00,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:00,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:00,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:00,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 357 transitions, 2952 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) [2024-06-14 11:51:00,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:00,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:00,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:02,306 INFO L124 PetriNetUnfolderBase]: 3275/5110 cut-off events. [2024-06-14 11:51:02,306 INFO L125 PetriNetUnfolderBase]: For 1356850/1356856 co-relation queries the response was YES. [2024-06-14 11:51:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58252 conditions, 5110 events. 3275/5110 cut-off events. For 1356850/1356856 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28612 event pairs, 704 based on Foata normal form. 5/5106 useless extension candidates. Maximal degree in co-relation 58117. Up to 4621 conditions per place. [2024-06-14 11:51:02,371 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 332 selfloop transitions, 54 changer transitions 0/391 dead transitions. [2024-06-14 11:51:02,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 391 transitions, 3908 flow [2024-06-14 11:51:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:02,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-14 11:51:02,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-14 11:51:02,372 INFO L175 Difference]: Start difference. First operand has 282 places, 357 transitions, 2952 flow. Second operand 10 states and 192 transitions. [2024-06-14 11:51:02,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 391 transitions, 3908 flow [2024-06-14 11:51:04,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 391 transitions, 3782 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 11:51:04,239 INFO L231 Difference]: Finished difference. Result has 285 places, 359 transitions, 3049 flow [2024-06-14 11:51:04,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3049, PETRI_PLACES=285, PETRI_TRANSITIONS=359} [2024-06-14 11:51:04,239 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 239 predicate places. [2024-06-14 11:51:04,240 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 359 transitions, 3049 flow [2024-06-14 11:51:04,240 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) [2024-06-14 11:51:04,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:04,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:04,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:51:04,240 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:04,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1013587108, now seen corresponding path program 6 times [2024-06-14 11:51:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451203375] [2024-06-14 11:51:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:04,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:05,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451203375] [2024-06-14 11:51:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451203375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:05,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:05,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:05,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343304152] [2024-06-14 11:51:05,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:05,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:05,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:05,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 359 transitions, 3049 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) [2024-06-14 11:51:05,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:05,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:05,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:07,065 INFO L124 PetriNetUnfolderBase]: 3292/5137 cut-off events. [2024-06-14 11:51:07,065 INFO L125 PetriNetUnfolderBase]: For 1387810/1387819 co-relation queries the response was YES. [2024-06-14 11:51:07,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59045 conditions, 5137 events. 3292/5137 cut-off events. For 1387810/1387819 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28795 event pairs, 675 based on Foata normal form. 7/5138 useless extension candidates. Maximal degree in co-relation 58910. Up to 4546 conditions per place. [2024-06-14 11:51:07,139 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 318 selfloop transitions, 74 changer transitions 0/397 dead transitions. [2024-06-14 11:51:07,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 397 transitions, 4045 flow [2024-06-14 11:51:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 11:51:07,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-06-14 11:51:07,140 INFO L175 Difference]: Start difference. First operand has 285 places, 359 transitions, 3049 flow. Second operand 10 states and 194 transitions. [2024-06-14 11:51:07,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 397 transitions, 4045 flow [2024-06-14 11:51:09,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 397 transitions, 3840 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-14 11:51:09,029 INFO L231 Difference]: Finished difference. Result has 288 places, 364 transitions, 3131 flow [2024-06-14 11:51:09,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3131, PETRI_PLACES=288, PETRI_TRANSITIONS=364} [2024-06-14 11:51:09,029 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 242 predicate places. [2024-06-14 11:51:09,029 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 364 transitions, 3131 flow [2024-06-14 11:51:09,029 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) [2024-06-14 11:51:09,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:09,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:09,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:51:09,029 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:09,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1749712766, now seen corresponding path program 7 times [2024-06-14 11:51:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026446998] [2024-06-14 11:51:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:09,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026446998] [2024-06-14 11:51:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026446998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:10,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129897111] [2024-06-14 11:51:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:10,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:10,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:10,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 364 transitions, 3131 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) [2024-06-14 11:51:10,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:10,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:10,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:11,920 INFO L124 PetriNetUnfolderBase]: 3320/5175 cut-off events. [2024-06-14 11:51:11,921 INFO L125 PetriNetUnfolderBase]: For 1416626/1416635 co-relation queries the response was YES. [2024-06-14 11:51:11,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59991 conditions, 5175 events. 3320/5175 cut-off events. For 1416626/1416635 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 28941 event pairs, 675 based on Foata normal form. 7/5176 useless extension candidates. Maximal degree in co-relation 59854. Up to 4585 conditions per place. [2024-06-14 11:51:12,017 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 314 selfloop transitions, 87 changer transitions 0/406 dead transitions. [2024-06-14 11:51:12,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 406 transitions, 4190 flow [2024-06-14 11:51:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-14 11:51:12,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-14 11:51:12,018 INFO L175 Difference]: Start difference. First operand has 288 places, 364 transitions, 3131 flow. Second operand 10 states and 192 transitions. [2024-06-14 11:51:12,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 406 transitions, 4190 flow [2024-06-14 11:51:14,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 406 transitions, 3931 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-14 11:51:14,103 INFO L231 Difference]: Finished difference. Result has 292 places, 374 transitions, 3267 flow [2024-06-14 11:51:14,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3267, PETRI_PLACES=292, PETRI_TRANSITIONS=374} [2024-06-14 11:51:14,103 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 246 predicate places. [2024-06-14 11:51:14,103 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 374 transitions, 3267 flow [2024-06-14 11:51:14,103 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) [2024-06-14 11:51:14,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:14,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:14,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:51:14,104 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:14,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:14,104 INFO L85 PathProgramCache]: Analyzing trace with hash 383211896, now seen corresponding path program 8 times [2024-06-14 11:51:14,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:14,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11305027] [2024-06-14 11:51:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:14,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11305027] [2024-06-14 11:51:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11305027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:15,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:15,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261040875] [2024-06-14 11:51:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:15,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:15,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:15,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 374 transitions, 3267 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) [2024-06-14 11:51:15,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:15,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:16,929 INFO L124 PetriNetUnfolderBase]: 3348/5218 cut-off events. [2024-06-14 11:51:16,929 INFO L125 PetriNetUnfolderBase]: For 1446753/1446762 co-relation queries the response was YES. [2024-06-14 11:51:16,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61003 conditions, 5218 events. 3348/5218 cut-off events. For 1446753/1446762 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 29260 event pairs, 670 based on Foata normal form. 7/5219 useless extension candidates. Maximal degree in co-relation 60864. Up to 4624 conditions per place. [2024-06-14 11:51:17,009 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 323 selfloop transitions, 84 changer transitions 0/412 dead transitions. [2024-06-14 11:51:17,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 412 transitions, 4309 flow [2024-06-14 11:51:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 11:51:17,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-06-14 11:51:17,010 INFO L175 Difference]: Start difference. First operand has 292 places, 374 transitions, 3267 flow. Second operand 10 states and 194 transitions. [2024-06-14 11:51:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 412 transitions, 4309 flow [2024-06-14 11:51:18,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 412 transitions, 4103 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-14 11:51:18,987 INFO L231 Difference]: Finished difference. Result has 298 places, 380 transitions, 3402 flow [2024-06-14 11:51:18,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3402, PETRI_PLACES=298, PETRI_TRANSITIONS=380} [2024-06-14 11:51:18,987 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 252 predicate places. [2024-06-14 11:51:18,988 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 380 transitions, 3402 flow [2024-06-14 11:51:18,988 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) [2024-06-14 11:51:18,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:18,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:18,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:51:18,988 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:18,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1243564018, now seen corresponding path program 9 times [2024-06-14 11:51:18,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:18,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026674554] [2024-06-14 11:51:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:18,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:20,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:20,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026674554] [2024-06-14 11:51:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026674554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:20,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:20,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:20,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975538558] [2024-06-14 11:51:20,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:20,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:20,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:20,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:20,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 380 transitions, 3402 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) [2024-06-14 11:51:20,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:20,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:20,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:21,949 INFO L124 PetriNetUnfolderBase]: 3376/5256 cut-off events. [2024-06-14 11:51:21,949 INFO L125 PetriNetUnfolderBase]: For 1471822/1471831 co-relation queries the response was YES. [2024-06-14 11:51:21,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60643 conditions, 5256 events. 3376/5256 cut-off events. For 1471822/1471831 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 29418 event pairs, 665 based on Foata normal form. 7/5257 useless extension candidates. Maximal degree in co-relation 60502. Up to 4663 conditions per place. [2024-06-14 11:51:22,026 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 327 selfloop transitions, 85 changer transitions 0/417 dead transitions. [2024-06-14 11:51:22,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 417 transitions, 4446 flow [2024-06-14 11:51:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-14 11:51:22,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 11:51:22,028 INFO L175 Difference]: Start difference. First operand has 298 places, 380 transitions, 3402 flow. Second operand 10 states and 195 transitions. [2024-06-14 11:51:22,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 417 transitions, 4446 flow [2024-06-14 11:51:23,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 417 transitions, 4189 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-14 11:51:23,420 INFO L231 Difference]: Finished difference. Result has 303 places, 385 transitions, 3466 flow [2024-06-14 11:51:23,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3466, PETRI_PLACES=303, PETRI_TRANSITIONS=385} [2024-06-14 11:51:23,421 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 257 predicate places. [2024-06-14 11:51:23,421 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 385 transitions, 3466 flow [2024-06-14 11:51:23,421 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) [2024-06-14 11:51:23,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:23,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:23,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:51:23,421 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:23,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:23,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1243574248, now seen corresponding path program 10 times [2024-06-14 11:51:23,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:23,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261315040] [2024-06-14 11:51:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:23,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261315040] [2024-06-14 11:51:24,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261315040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:24,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:24,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:24,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325427502] [2024-06-14 11:51:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:24,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:24,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 385 transitions, 3466 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) [2024-06-14 11:51:24,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:24,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:24,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:26,451 INFO L124 PetriNetUnfolderBase]: 3418/5332 cut-off events. [2024-06-14 11:51:26,451 INFO L125 PetriNetUnfolderBase]: For 1523001/1523010 co-relation queries the response was YES. [2024-06-14 11:51:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62104 conditions, 5332 events. 3418/5332 cut-off events. For 1523001/1523010 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 30017 event pairs, 672 based on Foata normal form. 7/5333 useless extension candidates. Maximal degree in co-relation 61962. Up to 4646 conditions per place. [2024-06-14 11:51:26,521 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 327 selfloop transitions, 92 changer transitions 0/424 dead transitions. [2024-06-14 11:51:26,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 424 transitions, 4984 flow [2024-06-14 11:51:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-14 11:51:26,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-14 11:51:26,522 INFO L175 Difference]: Start difference. First operand has 303 places, 385 transitions, 3466 flow. Second operand 10 states and 198 transitions. [2024-06-14 11:51:26,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 424 transitions, 4984 flow [2024-06-14 11:51:28,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 424 transitions, 4653 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:28,517 INFO L231 Difference]: Finished difference. Result has 304 places, 389 transitions, 3558 flow [2024-06-14 11:51:28,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3135, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3558, PETRI_PLACES=304, PETRI_TRANSITIONS=389} [2024-06-14 11:51:28,517 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 258 predicate places. [2024-06-14 11:51:28,517 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 389 transitions, 3558 flow [2024-06-14 11:51:28,517 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) [2024-06-14 11:51:28,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:28,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:28,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:51:28,518 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:28,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1235232148, now seen corresponding path program 11 times [2024-06-14 11:51:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:28,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774627240] [2024-06-14 11:51:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774627240] [2024-06-14 11:51:29,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774627240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:29,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:29,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:29,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131263894] [2024-06-14 11:51:29,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:29,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:29,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:29,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:29,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 389 transitions, 3558 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) [2024-06-14 11:51:29,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:29,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:29,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:31,538 INFO L124 PetriNetUnfolderBase]: 3410/5320 cut-off events. [2024-06-14 11:51:31,538 INFO L125 PetriNetUnfolderBase]: For 1531635/1531644 co-relation queries the response was YES. [2024-06-14 11:51:31,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61617 conditions, 5320 events. 3410/5320 cut-off events. For 1531635/1531644 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29975 event pairs, 675 based on Foata normal form. 7/5321 useless extension candidates. Maximal degree in co-relation 61477. Up to 4717 conditions per place. [2024-06-14 11:51:31,613 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 332 selfloop transitions, 84 changer transitions 0/421 dead transitions. [2024-06-14 11:51:31,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 421 transitions, 4470 flow [2024-06-14 11:51:31,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-14 11:51:31,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2024-06-14 11:51:31,614 INFO L175 Difference]: Start difference. First operand has 304 places, 389 transitions, 3558 flow. Second operand 10 states and 196 transitions. [2024-06-14 11:51:31,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 421 transitions, 4470 flow [2024-06-14 11:51:33,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 421 transitions, 4166 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-06-14 11:51:33,990 INFO L231 Difference]: Finished difference. Result has 308 places, 389 transitions, 3429 flow [2024-06-14 11:51:33,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3429, PETRI_PLACES=308, PETRI_TRANSITIONS=389} [2024-06-14 11:51:33,991 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 262 predicate places. [2024-06-14 11:51:33,991 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 389 transitions, 3429 flow [2024-06-14 11:51:33,991 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) [2024-06-14 11:51:33,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:33,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:51:33,992 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:33,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 338300274, now seen corresponding path program 12 times [2024-06-14 11:51:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129919071] [2024-06-14 11:51:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129919071] [2024-06-14 11:51:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129919071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:35,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465896528] [2024-06-14 11:51:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:35,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:35,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 389 transitions, 3429 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) [2024-06-14 11:51:35,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:35,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:35,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:37,046 INFO L124 PetriNetUnfolderBase]: 3427/5352 cut-off events. [2024-06-14 11:51:37,046 INFO L125 PetriNetUnfolderBase]: For 1555335/1555344 co-relation queries the response was YES. [2024-06-14 11:51:37,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61941 conditions, 5352 events. 3427/5352 cut-off events. For 1555335/1555344 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 30227 event pairs, 685 based on Foata normal form. 7/5353 useless extension candidates. Maximal degree in co-relation 61799. Up to 4744 conditions per place. [2024-06-14 11:51:37,130 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 330 selfloop transitions, 88 changer transitions 0/423 dead transitions. [2024-06-14 11:51:37,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 423 transitions, 4463 flow [2024-06-14 11:51:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-14 11:51:37,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288888888888889 [2024-06-14 11:51:37,131 INFO L175 Difference]: Start difference. First operand has 308 places, 389 transitions, 3429 flow. Second operand 10 states and 193 transitions. [2024-06-14 11:51:37,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 423 transitions, 4463 flow [2024-06-14 11:51:39,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 423 transitions, 4254 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:39,096 INFO L231 Difference]: Finished difference. Result has 307 places, 391 transitions, 3525 flow [2024-06-14 11:51:39,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3525, PETRI_PLACES=307, PETRI_TRANSITIONS=391} [2024-06-14 11:51:39,096 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 261 predicate places. [2024-06-14 11:51:39,096 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 391 transitions, 3525 flow [2024-06-14 11:51:39,097 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) [2024-06-14 11:51:39,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:39,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:39,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:51:39,097 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:39,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1242046360, now seen corresponding path program 13 times [2024-06-14 11:51:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098215931] [2024-06-14 11:51:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:40,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098215931] [2024-06-14 11:51:40,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098215931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:40,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:40,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:40,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254572940] [2024-06-14 11:51:40,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:40,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:40,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:40,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:40,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:40,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:40,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 391 transitions, 3525 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) [2024-06-14 11:51:40,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:40,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:40,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:41,836 INFO L124 PetriNetUnfolderBase]: 3444/5374 cut-off events. [2024-06-14 11:51:41,836 INFO L125 PetriNetUnfolderBase]: For 1589710/1589719 co-relation queries the response was YES. [2024-06-14 11:51:41,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62720 conditions, 5374 events. 3444/5374 cut-off events. For 1589710/1589719 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 30384 event pairs, 680 based on Foata normal form. 7/5375 useless extension candidates. Maximal degree in co-relation 62579. Up to 4712 conditions per place. [2024-06-14 11:51:41,908 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 329 selfloop transitions, 92 changer transitions 0/426 dead transitions. [2024-06-14 11:51:41,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 426 transitions, 4571 flow [2024-06-14 11:51:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-14 11:51:41,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 11:51:41,909 INFO L175 Difference]: Start difference. First operand has 307 places, 391 transitions, 3525 flow. Second operand 10 states and 195 transitions. [2024-06-14 11:51:41,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 426 transitions, 4571 flow [2024-06-14 11:51:43,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 426 transitions, 4276 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-14 11:51:43,762 INFO L231 Difference]: Finished difference. Result has 309 places, 393 transitions, 3547 flow [2024-06-14 11:51:43,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3230, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3547, PETRI_PLACES=309, PETRI_TRANSITIONS=393} [2024-06-14 11:51:43,763 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 263 predicate places. [2024-06-14 11:51:43,763 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 393 transitions, 3547 flow [2024-06-14 11:51:43,763 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) [2024-06-14 11:51:43,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:43,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:51:43,763 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:43,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:43,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1481383912, now seen corresponding path program 14 times [2024-06-14 11:51:43,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:43,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647538254] [2024-06-14 11:51:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:43,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:44,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:44,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647538254] [2024-06-14 11:51:44,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647538254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:44,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:44,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502058152] [2024-06-14 11:51:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:44,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:45,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:45,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 393 transitions, 3547 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) [2024-06-14 11:51:45,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:45,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:45,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:46,473 INFO L124 PetriNetUnfolderBase]: 3461/5401 cut-off events. [2024-06-14 11:51:46,473 INFO L125 PetriNetUnfolderBase]: For 1620659/1620668 co-relation queries the response was YES. [2024-06-14 11:51:46,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63276 conditions, 5401 events. 3461/5401 cut-off events. For 1620659/1620668 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30531 event pairs, 685 based on Foata normal form. 7/5402 useless extension candidates. Maximal degree in co-relation 63134. Up to 4757 conditions per place. [2024-06-14 11:51:46,551 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 326 selfloop transitions, 97 changer transitions 0/428 dead transitions. [2024-06-14 11:51:46,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 428 transitions, 4601 flow [2024-06-14 11:51:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 11:51:46,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-06-14 11:51:46,552 INFO L175 Difference]: Start difference. First operand has 309 places, 393 transitions, 3547 flow. Second operand 10 states and 194 transitions. [2024-06-14 11:51:46,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 428 transitions, 4601 flow [2024-06-14 11:51:48,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 428 transitions, 4302 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-14 11:51:48,300 INFO L231 Difference]: Finished difference. Result has 311 places, 395 transitions, 3579 flow [2024-06-14 11:51:48,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3579, PETRI_PLACES=311, PETRI_TRANSITIONS=395} [2024-06-14 11:51:48,300 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 265 predicate places. [2024-06-14 11:51:48,300 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 395 transitions, 3579 flow [2024-06-14 11:51:48,300 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) [2024-06-14 11:51:48,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:48,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:48,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:51:48,301 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:51:48,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1835646952, now seen corresponding path program 15 times [2024-06-14 11:51:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:48,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460822488] [2024-06-14 11:51:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:48,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460822488] [2024-06-14 11:51:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460822488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:49,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:49,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:51:49,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001532536] [2024-06-14 11:51:49,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:49,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:51:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:51:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:51:49,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:51:49,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 395 transitions, 3579 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) [2024-06-14 11:51:49,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:49,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:51:49,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:50,870 INFO L124 PetriNetUnfolderBase]: 3453/5379 cut-off events. [2024-06-14 11:51:50,870 INFO L125 PetriNetUnfolderBase]: For 1627178/1627187 co-relation queries the response was YES. [2024-06-14 11:51:50,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62804 conditions, 5379 events. 3453/5379 cut-off events. For 1627178/1627187 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30314 event pairs, 614 based on Foata normal form. 7/5380 useless extension candidates. Maximal degree in co-relation 62661. Up to 4396 conditions per place. [2024-06-14 11:51:50,944 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 298 selfloop transitions, 128 changer transitions 0/431 dead transitions. [2024-06-14 11:51:50,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 431 transitions, 4645 flow [2024-06-14 11:51:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 11:51:50,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-06-14 11:51:50,946 INFO L175 Difference]: Start difference. First operand has 311 places, 395 transitions, 3579 flow. Second operand 10 states and 194 transitions. [2024-06-14 11:51:50,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 431 transitions, 4645 flow [2024-06-14 11:51:53,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 431 transitions, 4332 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-14 11:51:53,194 INFO L231 Difference]: Finished difference. Result has 313 places, 397 transitions, 3663 flow [2024-06-14 11:51:53,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3663, PETRI_PLACES=313, PETRI_TRANSITIONS=397} [2024-06-14 11:51:53,195 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 267 predicate places. [2024-06-14 11:51:53,195 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 397 transitions, 3663 flow [2024-06-14 11:51:53,195 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) [2024-06-14 11:51:53,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:53,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:53,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:51:53,195 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)] === [2024-06-14 11:51:53,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:53,195 INFO L85 PathProgramCache]: Analyzing trace with hash 789738608, now seen corresponding path program 2 times [2024-06-14 11:51:53,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:53,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802186078] [2024-06-14 11:51:53,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:53,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:54,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802186078] [2024-06-14 11:51:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802186078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:54,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:51:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340702725] [2024-06-14 11:51:54,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:54,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:51:54,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:54,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:51:54,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:51:54,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:51:54,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 397 transitions, 3663 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:54,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:54,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:51:54,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:55,748 INFO L124 PetriNetUnfolderBase]: 2892/4765 cut-off events. [2024-06-14 11:51:55,748 INFO L125 PetriNetUnfolderBase]: For 1631578/1631601 co-relation queries the response was YES. [2024-06-14 11:51:55,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58960 conditions, 4765 events. 2892/4765 cut-off events. For 1631578/1631601 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28832 event pairs, 640 based on Foata normal form. 10/4729 useless extension candidates. Maximal degree in co-relation 58816. Up to 3880 conditions per place. [2024-06-14 11:51:55,822 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 294 selfloop transitions, 22 changer transitions 0/412 dead transitions. [2024-06-14 11:51:55,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 412 transitions, 4413 flow [2024-06-14 11:51:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:51:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:51:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 11:51:55,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-14 11:51:55,823 INFO L175 Difference]: Start difference. First operand has 313 places, 397 transitions, 3663 flow. Second operand 8 states and 161 transitions. [2024-06-14 11:51:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 412 transitions, 4413 flow [2024-06-14 11:51:58,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 412 transitions, 4034 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-14 11:51:58,643 INFO L231 Difference]: Finished difference. Result has 313 places, 400 transitions, 3428 flow [2024-06-14 11:51:58,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3428, PETRI_PLACES=313, PETRI_TRANSITIONS=400} [2024-06-14 11:51:58,643 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 267 predicate places. [2024-06-14 11:51:58,643 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 400 transitions, 3428 flow [2024-06-14 11:51:58,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:58,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:58,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:58,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:51:58,643 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)] === [2024-06-14 11:51:58,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1911226348, now seen corresponding path program 4 times [2024-06-14 11:51:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:58,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726769941] [2024-06-14 11:51:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:58,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:59,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726769941] [2024-06-14 11:51:59,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726769941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:59,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:59,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:51:59,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516372096] [2024-06-14 11:51:59,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:59,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:51:59,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:59,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:51:59,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:00,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:00,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 400 transitions, 3428 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) [2024-06-14 11:52:00,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:00,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:00,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:01,265 INFO L124 PetriNetUnfolderBase]: 3053/4937 cut-off events. [2024-06-14 11:52:01,266 INFO L125 PetriNetUnfolderBase]: For 1662781/1662804 co-relation queries the response was YES. [2024-06-14 11:52:01,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60603 conditions, 4937 events. 3053/4937 cut-off events. For 1662781/1662804 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29153 event pairs, 647 based on Foata normal form. 6/4903 useless extension candidates. Maximal degree in co-relation 60458. Up to 4305 conditions per place. [2024-06-14 11:52:01,331 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 330 selfloop transitions, 34 changer transitions 0/418 dead transitions. [2024-06-14 11:52:01,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 418 transitions, 4624 flow [2024-06-14 11:52:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-14 11:52:01,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-14 11:52:01,332 INFO L175 Difference]: Start difference. First operand has 313 places, 400 transitions, 3428 flow. Second operand 8 states and 158 transitions. [2024-06-14 11:52:01,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 418 transitions, 4624 flow [2024-06-14 11:52:03,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 418 transitions, 4506 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:03,573 INFO L231 Difference]: Finished difference. Result has 315 places, 406 transitions, 3602 flow [2024-06-14 11:52:03,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3602, PETRI_PLACES=315, PETRI_TRANSITIONS=406} [2024-06-14 11:52:03,573 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 269 predicate places. [2024-06-14 11:52:03,573 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 406 transitions, 3602 flow [2024-06-14 11:52:03,573 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) [2024-06-14 11:52:03,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:03,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:03,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:52:03,574 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)] === [2024-06-14 11:52:03,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:03,574 INFO L85 PathProgramCache]: Analyzing trace with hash 789723728, now seen corresponding path program 4 times [2024-06-14 11:52:03,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:03,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441440921] [2024-06-14 11:52:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:04,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:04,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441440921] [2024-06-14 11:52:04,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441440921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:04,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:04,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:04,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103922676] [2024-06-14 11:52:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:04,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:04,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:04,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:04,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 406 transitions, 3602 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) [2024-06-14 11:52:04,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:04,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:04,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:05,955 INFO L124 PetriNetUnfolderBase]: 3050/4928 cut-off events. [2024-06-14 11:52:05,955 INFO L125 PetriNetUnfolderBase]: For 1685476/1685481 co-relation queries the response was YES. [2024-06-14 11:52:06,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60886 conditions, 4928 events. 3050/4928 cut-off events. For 1685476/1685481 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29051 event pairs, 654 based on Foata normal form. 3/4887 useless extension candidates. Maximal degree in co-relation 60740. Up to 4281 conditions per place. [2024-06-14 11:52:06,025 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 326 selfloop transitions, 40 changer transitions 0/420 dead transitions. [2024-06-14 11:52:06,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 420 transitions, 4462 flow [2024-06-14 11:52:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 11:52:06,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-14 11:52:06,026 INFO L175 Difference]: Start difference. First operand has 315 places, 406 transitions, 3602 flow. Second operand 8 states and 157 transitions. [2024-06-14 11:52:06,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 420 transitions, 4462 flow [2024-06-14 11:52:08,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 420 transitions, 4326 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-14 11:52:08,663 INFO L231 Difference]: Finished difference. Result has 319 places, 409 transitions, 3660 flow [2024-06-14 11:52:08,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3660, PETRI_PLACES=319, PETRI_TRANSITIONS=409} [2024-06-14 11:52:08,663 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 273 predicate places. [2024-06-14 11:52:08,664 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 409 transitions, 3660 flow [2024-06-14 11:52:08,664 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) [2024-06-14 11:52:08,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:08,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:08,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:52:08,664 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)] === [2024-06-14 11:52:08,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1550095796, now seen corresponding path program 3 times [2024-06-14 11:52:08,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:08,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344539771] [2024-06-14 11:52:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:08,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344539771] [2024-06-14 11:52:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344539771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:10,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751292130] [2024-06-14 11:52:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:10,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:52:10,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 409 transitions, 3660 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:10,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:10,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:52:10,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:11,274 INFO L124 PetriNetUnfolderBase]: 2903/4787 cut-off events. [2024-06-14 11:52:11,274 INFO L125 PetriNetUnfolderBase]: For 1703015/1703023 co-relation queries the response was YES. [2024-06-14 11:52:11,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60005 conditions, 4787 events. 2903/4787 cut-off events. For 1703015/1703023 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29003 event pairs, 640 based on Foata normal form. 7/4756 useless extension candidates. Maximal degree in co-relation 59857. Up to 3873 conditions per place. [2024-06-14 11:52:11,351 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 296 selfloop transitions, 38 changer transitions 0/432 dead transitions. [2024-06-14 11:52:11,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 432 transitions, 4798 flow [2024-06-14 11:52:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-14 11:52:11,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-14 11:52:11,352 INFO L175 Difference]: Start difference. First operand has 319 places, 409 transitions, 3660 flow. Second operand 8 states and 164 transitions. [2024-06-14 11:52:11,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 432 transitions, 4798 flow [2024-06-14 11:52:14,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 432 transitions, 4626 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:14,100 INFO L231 Difference]: Finished difference. Result has 322 places, 420 transitions, 3811 flow [2024-06-14 11:52:14,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3488, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3811, PETRI_PLACES=322, PETRI_TRANSITIONS=420} [2024-06-14 11:52:14,101 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 276 predicate places. [2024-06-14 11:52:14,101 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 420 transitions, 3811 flow [2024-06-14 11:52:14,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:14,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:14,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:14,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:52:14,101 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)] === [2024-06-14 11:52:14,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 789724162, now seen corresponding path program 5 times [2024-06-14 11:52:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:14,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084121029] [2024-06-14 11:52:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:14,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:15,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:15,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084121029] [2024-06-14 11:52:15,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084121029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:15,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:15,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810405519] [2024-06-14 11:52:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:15,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:15,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 420 transitions, 3811 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) [2024-06-14 11:52:15,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:15,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:15,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:16,661 INFO L124 PetriNetUnfolderBase]: 3052/4936 cut-off events. [2024-06-14 11:52:16,661 INFO L125 PetriNetUnfolderBase]: For 1736592/1736600 co-relation queries the response was YES. [2024-06-14 11:52:16,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61890 conditions, 4936 events. 3052/4936 cut-off events. For 1736592/1736600 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29159 event pairs, 647 based on Foata normal form. 5/4902 useless extension candidates. Maximal degree in co-relation 61740. Up to 4311 conditions per place. [2024-06-14 11:52:16,740 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 348 selfloop transitions, 29 changer transitions 0/431 dead transitions. [2024-06-14 11:52:16,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 431 transitions, 4591 flow [2024-06-14 11:52:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 11:52:16,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 11:52:16,741 INFO L175 Difference]: Start difference. First operand has 322 places, 420 transitions, 3811 flow. Second operand 8 states and 155 transitions. [2024-06-14 11:52:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 431 transitions, 4591 flow [2024-06-14 11:52:19,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 431 transitions, 4387 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-06-14 11:52:19,236 INFO L231 Difference]: Finished difference. Result has 327 places, 420 transitions, 3671 flow [2024-06-14 11:52:19,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3671, PETRI_PLACES=327, PETRI_TRANSITIONS=420} [2024-06-14 11:52:19,237 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 281 predicate places. [2024-06-14 11:52:19,237 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 420 transitions, 3671 flow [2024-06-14 11:52:19,237 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) [2024-06-14 11:52:19,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:19,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:19,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:52:19,237 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)] === [2024-06-14 11:52:19,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash 805392802, now seen corresponding path program 6 times [2024-06-14 11:52:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:19,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646362517] [2024-06-14 11:52:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:19,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646362517] [2024-06-14 11:52:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646362517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:20,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:20,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072782517] [2024-06-14 11:52:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:20,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:20,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 420 transitions, 3671 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) [2024-06-14 11:52:20,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:20,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:20,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:22,175 INFO L124 PetriNetUnfolderBase]: 3049/4932 cut-off events. [2024-06-14 11:52:22,175 INFO L125 PetriNetUnfolderBase]: For 1756142/1756150 co-relation queries the response was YES. [2024-06-14 11:52:22,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61841 conditions, 4932 events. 3049/4932 cut-off events. For 1756142/1756150 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29092 event pairs, 647 based on Foata normal form. 5/4898 useless extension candidates. Maximal degree in co-relation 61689. Up to 4280 conditions per place. [2024-06-14 11:52:22,253 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 328 selfloop transitions, 52 changer transitions 0/434 dead transitions. [2024-06-14 11:52:22,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 434 transitions, 4573 flow [2024-06-14 11:52:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 11:52:22,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-14 11:52:22,254 INFO L175 Difference]: Start difference. First operand has 327 places, 420 transitions, 3671 flow. Second operand 8 states and 157 transitions. [2024-06-14 11:52:22,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 434 transitions, 4573 flow [2024-06-14 11:52:24,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 434 transitions, 4507 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:52:24,873 INFO L231 Difference]: Finished difference. Result has 328 places, 423 transitions, 3837 flow [2024-06-14 11:52:24,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3837, PETRI_PLACES=328, PETRI_TRANSITIONS=423} [2024-06-14 11:52:24,873 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 282 predicate places. [2024-06-14 11:52:24,873 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 423 transitions, 3837 flow [2024-06-14 11:52:24,873 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) [2024-06-14 11:52:24,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:24,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:24,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:52:24,873 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)] === [2024-06-14 11:52:24,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:24,874 INFO L85 PathProgramCache]: Analyzing trace with hash 805928048, now seen corresponding path program 4 times [2024-06-14 11:52:24,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:24,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914231670] [2024-06-14 11:52:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:24,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914231670] [2024-06-14 11:52:26,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914231670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:26,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:26,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:26,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199018420] [2024-06-14 11:52:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:26,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:26,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:26,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:52:26,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 423 transitions, 3837 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:26,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:26,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:52:26,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:27,834 INFO L124 PetriNetUnfolderBase]: 2894/4773 cut-off events. [2024-06-14 11:52:27,834 INFO L125 PetriNetUnfolderBase]: For 1764971/1764973 co-relation queries the response was YES. [2024-06-14 11:52:27,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60692 conditions, 4773 events. 2894/4773 cut-off events. For 1764971/1764973 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 28884 event pairs, 633 based on Foata normal form. 3/4740 useless extension candidates. Maximal degree in co-relation 60539. Up to 3903 conditions per place. [2024-06-14 11:52:27,905 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 319 selfloop transitions, 17 changer transitions 0/435 dead transitions. [2024-06-14 11:52:27,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 435 transitions, 4542 flow [2024-06-14 11:52:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-14 11:52:27,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-14 11:52:27,906 INFO L175 Difference]: Start difference. First operand has 328 places, 423 transitions, 3837 flow. Second operand 8 states and 158 transitions. [2024-06-14 11:52:27,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 435 transitions, 4542 flow [2024-06-14 11:52:30,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 435 transitions, 4260 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:30,620 INFO L231 Difference]: Finished difference. Result has 331 places, 424 transitions, 3608 flow [2024-06-14 11:52:30,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3608, PETRI_PLACES=331, PETRI_TRANSITIONS=424} [2024-06-14 11:52:30,620 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 285 predicate places. [2024-06-14 11:52:30,620 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 424 transitions, 3608 flow [2024-06-14 11:52:30,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:30,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:30,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:30,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:52:30,621 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)] === [2024-06-14 11:52:30,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1318692784, now seen corresponding path program 1 times [2024-06-14 11:52:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:30,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497934566] [2024-06-14 11:52:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:30,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:31,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:31,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497934566] [2024-06-14 11:52:31,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497934566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:31,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:31,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:31,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816844116] [2024-06-14 11:52:31,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:31,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:31,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:31,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:31,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:31,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:31,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 424 transitions, 3608 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) [2024-06-14 11:52:31,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:31,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:31,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:33,087 INFO L124 PetriNetUnfolderBase]: 3144/5072 cut-off events. [2024-06-14 11:52:33,087 INFO L125 PetriNetUnfolderBase]: For 1773521/1773521 co-relation queries the response was YES. [2024-06-14 11:52:33,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61867 conditions, 5072 events. 3144/5072 cut-off events. For 1773521/1773521 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 29803 event pairs, 600 based on Foata normal form. 1/5070 useless extension candidates. Maximal degree in co-relation 61712. Up to 4352 conditions per place. [2024-06-14 11:52:33,166 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 369 selfloop transitions, 17 changer transitions 0/447 dead transitions. [2024-06-14 11:52:33,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 447 transitions, 4518 flow [2024-06-14 11:52:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 11:52:33,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:52:33,167 INFO L175 Difference]: Start difference. First operand has 331 places, 424 transitions, 3608 flow. Second operand 8 states and 160 transitions. [2024-06-14 11:52:33,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 447 transitions, 4518 flow [2024-06-14 11:52:36,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 447 transitions, 4450 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:52:36,133 INFO L231 Difference]: Finished difference. Result has 332 places, 427 transitions, 3674 flow [2024-06-14 11:52:36,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3674, PETRI_PLACES=332, PETRI_TRANSITIONS=427} [2024-06-14 11:52:36,134 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 286 predicate places. [2024-06-14 11:52:36,134 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 427 transitions, 3674 flow [2024-06-14 11:52:36,134 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) [2024-06-14 11:52:36,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:36,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:36,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:52:36,134 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)] === [2024-06-14 11:52:36,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1523812118, now seen corresponding path program 1 times [2024-06-14 11:52:36,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:36,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629389171] [2024-06-14 11:52:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:36,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:37,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629389171] [2024-06-14 11:52:37,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629389171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:37,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:37,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:37,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209641832] [2024-06-14 11:52:37,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:37,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:37,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:37,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:37,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 427 transitions, 3674 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) [2024-06-14 11:52:37,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:37,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:37,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:38,619 INFO L124 PetriNetUnfolderBase]: 3168/5108 cut-off events. [2024-06-14 11:52:38,619 INFO L125 PetriNetUnfolderBase]: For 1845414/1845422 co-relation queries the response was YES. [2024-06-14 11:52:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62813 conditions, 5108 events. 3168/5108 cut-off events. For 1845414/1845422 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 30067 event pairs, 601 based on Foata normal form. 6/5110 useless extension candidates. Maximal degree in co-relation 62658. Up to 4380 conditions per place. [2024-06-14 11:52:38,698 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 371 selfloop transitions, 18 changer transitions 0/450 dead transitions. [2024-06-14 11:52:38,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 450 transitions, 4578 flow [2024-06-14 11:52:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 11:52:38,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:52:38,699 INFO L175 Difference]: Start difference. First operand has 332 places, 427 transitions, 3674 flow. Second operand 8 states and 160 transitions. [2024-06-14 11:52:38,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 450 transitions, 4578 flow [2024-06-14 11:52:41,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 450 transitions, 4466 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:41,386 INFO L231 Difference]: Finished difference. Result has 334 places, 431 transitions, 3685 flow [2024-06-14 11:52:41,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3685, PETRI_PLACES=334, PETRI_TRANSITIONS=431} [2024-06-14 11:52:41,386 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 288 predicate places. [2024-06-14 11:52:41,387 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 431 transitions, 3685 flow [2024-06-14 11:52:41,387 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) [2024-06-14 11:52:41,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:41,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:41,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:52:41,387 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)] === [2024-06-14 11:52:41,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1313924488, now seen corresponding path program 2 times [2024-06-14 11:52:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423476361] [2024-06-14 11:52:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:42,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:42,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423476361] [2024-06-14 11:52:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423476361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613892763] [2024-06-14 11:52:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:42,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:42,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 431 transitions, 3685 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) [2024-06-14 11:52:42,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:42,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:42,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:44,034 INFO L124 PetriNetUnfolderBase]: 3195/5149 cut-off events. [2024-06-14 11:52:44,034 INFO L125 PetriNetUnfolderBase]: For 1874662/1874678 co-relation queries the response was YES. [2024-06-14 11:52:44,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 5149 events. 3195/5149 cut-off events. For 1874662/1874678 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 30316 event pairs, 600 based on Foata normal form. 1/5146 useless extension candidates. Maximal degree in co-relation 64266. Up to 4396 conditions per place. [2024-06-14 11:52:44,117 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 368 selfloop transitions, 30 changer transitions 0/459 dead transitions. [2024-06-14 11:52:44,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 459 transitions, 4966 flow [2024-06-14 11:52:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 11:52:44,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:52:44,118 INFO L175 Difference]: Start difference. First operand has 334 places, 431 transitions, 3685 flow. Second operand 8 states and 160 transitions. [2024-06-14 11:52:44,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 459 transitions, 4966 flow [2024-06-14 11:52:47,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 459 transitions, 4814 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:47,324 INFO L231 Difference]: Finished difference. Result has 337 places, 443 transitions, 3828 flow [2024-06-14 11:52:47,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3828, PETRI_PLACES=337, PETRI_TRANSITIONS=443} [2024-06-14 11:52:47,324 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 291 predicate places. [2024-06-14 11:52:47,324 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 443 transitions, 3828 flow [2024-06-14 11:52:47,325 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) [2024-06-14 11:52:47,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:47,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:47,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:52:47,325 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)] === [2024-06-14 11:52:47,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1313930998, now seen corresponding path program 3 times [2024-06-14 11:52:47,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:47,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057506229] [2024-06-14 11:52:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:47,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:48,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:48,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057506229] [2024-06-14 11:52:48,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057506229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:48,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:48,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:48,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044936200] [2024-06-14 11:52:48,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:48,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:48,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:48,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:48,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 443 transitions, 3828 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) [2024-06-14 11:52:48,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:48,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:49,984 INFO L124 PetriNetUnfolderBase]: 3193/5147 cut-off events. [2024-06-14 11:52:49,984 INFO L125 PetriNetUnfolderBase]: For 1914549/1914563 co-relation queries the response was YES. [2024-06-14 11:52:50,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64907 conditions, 5147 events. 3193/5147 cut-off events. For 1914549/1914563 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 30310 event pairs, 598 based on Foata normal form. 7/5150 useless extension candidates. Maximal degree in co-relation 64749. Up to 4406 conditions per place. [2024-06-14 11:52:50,060 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 377 selfloop transitions, 26 changer transitions 0/464 dead transitions. [2024-06-14 11:52:50,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 464 transitions, 4789 flow [2024-06-14 11:52:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 11:52:50,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:52:50,061 INFO L175 Difference]: Start difference. First operand has 337 places, 443 transitions, 3828 flow. Second operand 8 states and 160 transitions. [2024-06-14 11:52:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 464 transitions, 4789 flow [2024-06-14 11:52:53,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 464 transitions, 4665 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-14 11:52:53,349 INFO L231 Difference]: Finished difference. Result has 341 places, 447 transitions, 3866 flow [2024-06-14 11:52:53,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3866, PETRI_PLACES=341, PETRI_TRANSITIONS=447} [2024-06-14 11:52:53,349 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 295 predicate places. [2024-06-14 11:52:53,349 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 447 transitions, 3866 flow [2024-06-14 11:52:53,349 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) [2024-06-14 11:52:53,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:53,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:52:53,350 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)] === [2024-06-14 11:52:53,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1542067354, now seen corresponding path program 4 times [2024-06-14 11:52:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:53,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306670432] [2024-06-14 11:52:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:54,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:54,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306670432] [2024-06-14 11:52:54,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306670432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:54,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:54,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:52:54,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132419079] [2024-06-14 11:52:54,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:54,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:52:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:52:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:52:54,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:52:54,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 447 transitions, 3866 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) [2024-06-14 11:52:54,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:54,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:52:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:56,393 INFO L124 PetriNetUnfolderBase]: 3240/5217 cut-off events. [2024-06-14 11:52:56,393 INFO L125 PetriNetUnfolderBase]: For 1960052/1960069 co-relation queries the response was YES. [2024-06-14 11:52:56,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67044 conditions, 5217 events. 3240/5217 cut-off events. For 1960052/1960069 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 30760 event pairs, 609 based on Foata normal form. 3/5216 useless extension candidates. Maximal degree in co-relation 66884. Up to 4435 conditions per place. [2024-06-14 11:52:56,490 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 374 selfloop transitions, 35 changer transitions 0/470 dead transitions. [2024-06-14 11:52:56,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 470 transitions, 5168 flow [2024-06-14 11:52:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:52:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:52:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-14 11:52:56,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-14 11:52:56,491 INFO L175 Difference]: Start difference. First operand has 341 places, 447 transitions, 3866 flow. Second operand 8 states and 163 transitions. [2024-06-14 11:52:56,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 470 transitions, 5168 flow [2024-06-14 11:52:59,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 470 transitions, 5042 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-14 11:52:59,900 INFO L231 Difference]: Finished difference. Result has 344 places, 454 transitions, 3999 flow [2024-06-14 11:52:59,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3999, PETRI_PLACES=344, PETRI_TRANSITIONS=454} [2024-06-14 11:52:59,900 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 298 predicate places. [2024-06-14 11:52:59,900 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 454 transitions, 3999 flow [2024-06-14 11:52:59,900 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) [2024-06-14 11:52:59,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:59,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:59,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:52:59,901 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:52:59,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash 797358346, now seen corresponding path program 5 times [2024-06-14 11:52:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691474283] [2024-06-14 11:52:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691474283] [2024-06-14 11:53:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691474283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:01,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:53:01,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119168161] [2024-06-14 11:53:01,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:01,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:53:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:53:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:53:01,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:53:01,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 454 transitions, 3999 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) [2024-06-14 11:53:01,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:01,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:53:01,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:02,574 INFO L124 PetriNetUnfolderBase]: 3222/5193 cut-off events. [2024-06-14 11:53:02,574 INFO L125 PetriNetUnfolderBase]: For 1972261/1972270 co-relation queries the response was YES. [2024-06-14 11:53:02,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67071 conditions, 5193 events. 3222/5193 cut-off events. For 1972261/1972270 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 30599 event pairs, 607 based on Foata normal form. 7/5196 useless extension candidates. Maximal degree in co-relation 66909. Up to 4435 conditions per place. [2024-06-14 11:53:02,658 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 377 selfloop transitions, 30 changer transitions 0/468 dead transitions. [2024-06-14 11:53:02,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 468 transitions, 4883 flow [2024-06-14 11:53:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:53:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:53:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-14 11:53:02,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-14 11:53:02,659 INFO L175 Difference]: Start difference. First operand has 344 places, 454 transitions, 3999 flow. Second operand 8 states and 159 transitions. [2024-06-14 11:53:02,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 468 transitions, 4883 flow [2024-06-14 11:53:05,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 468 transitions, 4711 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:05,925 INFO L231 Difference]: Finished difference. Result has 348 places, 454 transitions, 3894 flow [2024-06-14 11:53:05,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3894, PETRI_PLACES=348, PETRI_TRANSITIONS=454} [2024-06-14 11:53:05,925 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 302 predicate places. [2024-06-14 11:53:05,925 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 454 transitions, 3894 flow [2024-06-14 11:53:05,926 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) [2024-06-14 11:53:05,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:05,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:05,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:53:05,926 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)] === [2024-06-14 11:53:05,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash 805639066, now seen corresponding path program 6 times [2024-06-14 11:53:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:05,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207966311] [2024-06-14 11:53:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:07,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207966311] [2024-06-14 11:53:07,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207966311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:07,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:07,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:53:07,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83007970] [2024-06-14 11:53:07,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:53:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:53:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:53:07,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:53:07,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 454 transitions, 3894 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) [2024-06-14 11:53:07,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:07,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:53:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:08,704 INFO L124 PetriNetUnfolderBase]: 3216/5185 cut-off events. [2024-06-14 11:53:08,704 INFO L125 PetriNetUnfolderBase]: For 1953562/1953571 co-relation queries the response was YES. [2024-06-14 11:53:08,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66761 conditions, 5185 events. 3216/5185 cut-off events. For 1953562/1953571 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 30594 event pairs, 605 based on Foata normal form. 3/5184 useless extension candidates. Maximal degree in co-relation 66597. Up to 4395 conditions per place. [2024-06-14 11:53:08,787 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 366 selfloop transitions, 53 changer transitions 0/480 dead transitions. [2024-06-14 11:53:08,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 480 transitions, 4921 flow [2024-06-14 11:53:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:53:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:53:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-14 11:53:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-14 11:53:08,788 INFO L175 Difference]: Start difference. First operand has 348 places, 454 transitions, 3894 flow. Second operand 8 states and 159 transitions. [2024-06-14 11:53:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 480 transitions, 4921 flow [2024-06-14 11:53:11,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 480 transitions, 4843 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 11:53:11,683 INFO L231 Difference]: Finished difference. Result has 351 places, 467 transitions, 4122 flow [2024-06-14 11:53:11,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4122, PETRI_PLACES=351, PETRI_TRANSITIONS=467} [2024-06-14 11:53:11,683 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 305 predicate places. [2024-06-14 11:53:11,683 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 467 transitions, 4122 flow [2024-06-14 11:53:11,684 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) [2024-06-14 11:53:11,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:11,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:53:11,684 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)] === [2024-06-14 11:53:11,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash 805946896, now seen corresponding path program 1 times [2024-06-14 11:53:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066408539] [2024-06-14 11:53:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:11,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:13,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066408539] [2024-06-14 11:53:13,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066408539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:13,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:13,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:53:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248628436] [2024-06-14 11:53:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:13,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:53:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:53:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:53:13,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-14 11:53:13,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 467 transitions, 4122 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:13,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:13,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-14 11:53:13,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:15,003 INFO L124 PetriNetUnfolderBase]: 2979/4891 cut-off events. [2024-06-14 11:53:15,003 INFO L125 PetriNetUnfolderBase]: For 1981969/1981981 co-relation queries the response was YES. [2024-06-14 11:53:15,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65651 conditions, 4891 events. 2979/4891 cut-off events. For 1981969/1981981 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 29535 event pairs, 616 based on Foata normal form. 12/4859 useless extension candidates. Maximal degree in co-relation 65484. Up to 4024 conditions per place. [2024-06-14 11:53:15,090 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 362 selfloop transitions, 19 changer transitions 0/482 dead transitions. [2024-06-14 11:53:15,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 482 transitions, 5010 flow [2024-06-14 11:53:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:53:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:53:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-14 11:53:15,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-14 11:53:15,092 INFO L175 Difference]: Start difference. First operand has 351 places, 467 transitions, 4122 flow. Second operand 9 states and 175 transitions. [2024-06-14 11:53:15,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 482 transitions, 5010 flow [2024-06-14 11:53:17,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 482 transitions, 4914 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-14 11:53:17,894 INFO L231 Difference]: Finished difference. Result has 357 places, 469 transitions, 4169 flow [2024-06-14 11:53:17,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4169, PETRI_PLACES=357, PETRI_TRANSITIONS=469} [2024-06-14 11:53:17,895 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 311 predicate places. [2024-06-14 11:53:17,895 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 469 transitions, 4169 flow [2024-06-14 11:53:17,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:17,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:17,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:53:17,895 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:53:17,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash -133078304, now seen corresponding path program 1 times [2024-06-14 11:53:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:17,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429666100] [2024-06-14 11:53:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:17,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:19,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429666100] [2024-06-14 11:53:19,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429666100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:19,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:19,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885703735] [2024-06-14 11:53:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:19,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:19,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:53:19,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 469 transitions, 4169 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) [2024-06-14 11:53:19,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:19,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:53:19,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:21,171 INFO L124 PetriNetUnfolderBase]: 3736/5822 cut-off events. [2024-06-14 11:53:21,171 INFO L125 PetriNetUnfolderBase]: For 2249953/2249953 co-relation queries the response was YES. [2024-06-14 11:53:21,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76092 conditions, 5822 events. 3736/5822 cut-off events. For 2249953/2249953 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 33134 event pairs, 557 based on Foata normal form. 16/5835 useless extension candidates. Maximal degree in co-relation 75923. Up to 5127 conditions per place. [2024-06-14 11:53:21,262 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 501 selfloop transitions, 29 changer transitions 0/535 dead transitions. [2024-06-14 11:53:21,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 535 transitions, 6105 flow [2024-06-14 11:53:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 241 transitions. [2024-06-14 11:53:21,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462962962962963 [2024-06-14 11:53:21,264 INFO L175 Difference]: Start difference. First operand has 357 places, 469 transitions, 4169 flow. Second operand 12 states and 241 transitions. [2024-06-14 11:53:21,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 535 transitions, 6105 flow [2024-06-14 11:53:24,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 535 transitions, 5970 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-14 11:53:24,587 INFO L231 Difference]: Finished difference. Result has 362 places, 471 transitions, 4272 flow [2024-06-14 11:53:24,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4272, PETRI_PLACES=362, PETRI_TRANSITIONS=471} [2024-06-14 11:53:24,587 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 316 predicate places. [2024-06-14 11:53:24,587 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 471 transitions, 4272 flow [2024-06-14 11:53:24,587 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) [2024-06-14 11:53:24,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:24,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:24,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:53:24,588 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:53:24,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1291678406, now seen corresponding path program 2 times [2024-06-14 11:53:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:24,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237113769] [2024-06-14 11:53:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:25,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237113769] [2024-06-14 11:53:25,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237113769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:25,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:25,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908884628] [2024-06-14 11:53:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:25,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:25,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:53:25,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 471 transitions, 4272 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) [2024-06-14 11:53:25,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:25,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:53:25,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:27,808 INFO L124 PetriNetUnfolderBase]: 3786/5914 cut-off events. [2024-06-14 11:53:27,808 INFO L125 PetriNetUnfolderBase]: For 2280431/2280431 co-relation queries the response was YES. [2024-06-14 11:53:27,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76931 conditions, 5914 events. 3786/5914 cut-off events. For 2280431/2280431 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33852 event pairs, 726 based on Foata normal form. 20/5931 useless extension candidates. Maximal degree in co-relation 76761. Up to 5432 conditions per place. [2024-06-14 11:53:27,906 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 496 selfloop transitions, 24 changer transitions 0/525 dead transitions. [2024-06-14 11:53:27,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 525 transitions, 5614 flow [2024-06-14 11:53:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-14 11:53:27,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383838383838384 [2024-06-14 11:53:27,907 INFO L175 Difference]: Start difference. First operand has 362 places, 471 transitions, 4272 flow. Second operand 11 states and 217 transitions. [2024-06-14 11:53:27,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 525 transitions, 5614 flow [2024-06-14 11:53:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 525 transitions, 5495 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-14 11:53:31,524 INFO L231 Difference]: Finished difference. Result has 365 places, 472 transitions, 4298 flow [2024-06-14 11:53:31,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4161, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4298, PETRI_PLACES=365, PETRI_TRANSITIONS=472} [2024-06-14 11:53:31,524 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 319 predicate places. [2024-06-14 11:53:31,524 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 472 transitions, 4298 flow [2024-06-14 11:53:31,525 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) [2024-06-14 11:53:31,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:31,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:31,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:53:31,525 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:53:31,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1710678784, now seen corresponding path program 3 times [2024-06-14 11:53:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:31,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686353087] [2024-06-14 11:53:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:31,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:32,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686353087] [2024-06-14 11:53:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686353087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043048106] [2024-06-14 11:53:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:32,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:32,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:53:32,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 472 transitions, 4298 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) [2024-06-14 11:53:32,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:32,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:53:32,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:34,720 INFO L124 PetriNetUnfolderBase]: 3758/5870 cut-off events. [2024-06-14 11:53:34,720 INFO L125 PetriNetUnfolderBase]: For 2205485/2205485 co-relation queries the response was YES. [2024-06-14 11:53:34,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74362 conditions, 5870 events. 3758/5870 cut-off events. For 2205485/2205485 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33564 event pairs, 686 based on Foata normal form. 16/5883 useless extension candidates. Maximal degree in co-relation 74190. Up to 5278 conditions per place. [2024-06-14 11:53:34,816 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 498 selfloop transitions, 26 changer transitions 0/529 dead transitions. [2024-06-14 11:53:34,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 529 transitions, 5614 flow [2024-06-14 11:53:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-14 11:53:34,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44646464646464645 [2024-06-14 11:53:34,817 INFO L175 Difference]: Start difference. First operand has 365 places, 472 transitions, 4298 flow. Second operand 11 states and 221 transitions. [2024-06-14 11:53:34,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 529 transitions, 5614 flow [2024-06-14 11:53:38,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 529 transitions, 5457 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-14 11:53:38,786 INFO L231 Difference]: Finished difference. Result has 367 places, 472 transitions, 4199 flow [2024-06-14 11:53:38,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4141, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4199, PETRI_PLACES=367, PETRI_TRANSITIONS=472} [2024-06-14 11:53:38,786 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 321 predicate places. [2024-06-14 11:53:38,786 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 472 transitions, 4199 flow [2024-06-14 11:53:38,787 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) [2024-06-14 11:53:38,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:38,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:38,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:53:38,787 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:53:38,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 989885628, now seen corresponding path program 4 times [2024-06-14 11:53:38,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:38,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173537443] [2024-06-14 11:53:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:38,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:39,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173537443] [2024-06-14 11:53:39,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173537443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:39,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:39,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:39,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467829485] [2024-06-14 11:53:39,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:39,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:39,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:40,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:53:40,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 472 transitions, 4199 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) [2024-06-14 11:53:40,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:40,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:53:40,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:42,103 INFO L124 PetriNetUnfolderBase]: 3833/6004 cut-off events. [2024-06-14 11:53:42,103 INFO L125 PetriNetUnfolderBase]: For 2258412/2258415 co-relation queries the response was YES. [2024-06-14 11:53:42,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75120 conditions, 6004 events. 3833/6004 cut-off events. For 2258412/2258415 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 34670 event pairs, 675 based on Foata normal form. 20/6020 useless extension candidates. Maximal degree in co-relation 74947. Up to 4630 conditions per place. [2024-06-14 11:53:42,239 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 348 selfloop transitions, 173 changer transitions 0/526 dead transitions. [2024-06-14 11:53:42,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 526 transitions, 5595 flow [2024-06-14 11:53:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-06-14 11:53:42,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686868686868687 [2024-06-14 11:53:42,240 INFO L175 Difference]: Start difference. First operand has 367 places, 472 transitions, 4199 flow. Second operand 11 states and 232 transitions. [2024-06-14 11:53:42,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 526 transitions, 5595 flow [2024-06-14 11:53:46,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 526 transitions, 5524 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:53:46,081 INFO L231 Difference]: Finished difference. Result has 368 places, 473 transitions, 4571 flow [2024-06-14 11:53:46,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4571, PETRI_PLACES=368, PETRI_TRANSITIONS=473} [2024-06-14 11:53:46,081 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 322 predicate places. [2024-06-14 11:53:46,081 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 473 transitions, 4571 flow [2024-06-14 11:53:46,081 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) [2024-06-14 11:53:46,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:46,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:46,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:53:46,082 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:53:46,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash 989737758, now seen corresponding path program 5 times [2024-06-14 11:53:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:46,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031085177] [2024-06-14 11:53:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031085177] [2024-06-14 11:53:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031085177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:47,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:47,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:47,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124670296] [2024-06-14 11:53:47,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:47,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:47,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:47,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:53:47,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 473 transitions, 4571 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) [2024-06-14 11:53:47,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:47,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:53:47,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:49,388 INFO L124 PetriNetUnfolderBase]: 4002/6293 cut-off events. [2024-06-14 11:53:49,388 INFO L125 PetriNetUnfolderBase]: For 2428480/2428483 co-relation queries the response was YES. [2024-06-14 11:53:49,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81454 conditions, 6293 events. 4002/6293 cut-off events. For 2428480/2428483 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 36994 event pairs, 698 based on Foata normal form. 16/6305 useless extension candidates. Maximal degree in co-relation 81280. Up to 4633 conditions per place. [2024-06-14 11:53:49,497 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 352 selfloop transitions, 176 changer transitions 0/533 dead transitions. [2024-06-14 11:53:49,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 533 transitions, 6547 flow [2024-06-14 11:53:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 236 transitions. [2024-06-14 11:53:49,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767676767676768 [2024-06-14 11:53:49,498 INFO L175 Difference]: Start difference. First operand has 368 places, 473 transitions, 4571 flow. Second operand 11 states and 236 transitions. [2024-06-14 11:53:49,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 533 transitions, 6547 flow [2024-06-14 11:53:54,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 533 transitions, 6136 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-14 11:53:54,169 INFO L231 Difference]: Finished difference. Result has 370 places, 475 transitions, 4700 flow [2024-06-14 11:53:54,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4700, PETRI_PLACES=370, PETRI_TRANSITIONS=475} [2024-06-14 11:53:54,169 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 324 predicate places. [2024-06-14 11:53:54,169 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 475 transitions, 4700 flow [2024-06-14 11:53:54,169 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) [2024-06-14 11:53:54,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:54,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:53:54,169 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:53:54,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash -759943320, now seen corresponding path program 6 times [2024-06-14 11:53:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65656176] [2024-06-14 11:53:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:55,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:55,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65656176] [2024-06-14 11:53:55,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65656176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:55,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:55,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:55,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165707016] [2024-06-14 11:53:55,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:55,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:55,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:55,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:55,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:55,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:53:55,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 475 transitions, 4700 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) [2024-06-14 11:53:55,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:55,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:53:55,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:57,620 INFO L124 PetriNetUnfolderBase]: 3966/6242 cut-off events. [2024-06-14 11:53:57,620 INFO L125 PetriNetUnfolderBase]: For 2350378/2350381 co-relation queries the response was YES. [2024-06-14 11:53:57,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78286 conditions, 6242 events. 3966/6242 cut-off events. For 2350378/2350381 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 36701 event pairs, 705 based on Foata normal form. 20/6258 useless extension candidates. Maximal degree in co-relation 78111. Up to 4853 conditions per place. [2024-06-14 11:53:57,719 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 348 selfloop transitions, 174 changer transitions 0/527 dead transitions. [2024-06-14 11:53:57,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 527 transitions, 5990 flow [2024-06-14 11:53:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-14 11:53:57,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-14 11:53:57,721 INFO L175 Difference]: Start difference. First operand has 370 places, 475 transitions, 4700 flow. Second operand 11 states and 230 transitions. [2024-06-14 11:53:57,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 527 transitions, 5990 flow [2024-06-14 11:54:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 527 transitions, 5638 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:02,047 INFO L231 Difference]: Finished difference. Result has 374 places, 475 transitions, 4703 flow [2024-06-14 11:54:02,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4703, PETRI_PLACES=374, PETRI_TRANSITIONS=475} [2024-06-14 11:54:02,047 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 328 predicate places. [2024-06-14 11:54:02,047 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 475 transitions, 4703 flow [2024-06-14 11:54:02,047 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) [2024-06-14 11:54:02,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:02,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:02,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:54:02,047 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:54:02,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:02,047 INFO L85 PathProgramCache]: Analyzing trace with hash -759727839, now seen corresponding path program 1 times [2024-06-14 11:54:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307070175] [2024-06-14 11:54:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:02,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:03,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307070175] [2024-06-14 11:54:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307070175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:03,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:03,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:03,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557727882] [2024-06-14 11:54:03,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:03,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:03,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:03,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 475 transitions, 4703 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) [2024-06-14 11:54:03,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:03,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:03,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:05,481 INFO L124 PetriNetUnfolderBase]: 3983/6274 cut-off events. [2024-06-14 11:54:05,481 INFO L125 PetriNetUnfolderBase]: For 2260821/2260824 co-relation queries the response was YES. [2024-06-14 11:54:05,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78160 conditions, 6274 events. 3983/6274 cut-off events. For 2260821/2260824 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 36989 event pairs, 715 based on Foata normal form. 4/6274 useless extension candidates. Maximal degree in co-relation 77983. Up to 5362 conditions per place. [2024-06-14 11:54:05,591 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 389 selfloop transitions, 132 changer transitions 0/526 dead transitions. [2024-06-14 11:54:05,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 526 transitions, 6015 flow [2024-06-14 11:54:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:05,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-14 11:54:05,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-06-14 11:54:05,593 INFO L175 Difference]: Start difference. First operand has 374 places, 475 transitions, 4703 flow. Second operand 11 states and 222 transitions. [2024-06-14 11:54:05,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 526 transitions, 6015 flow [2024-06-14 11:54:10,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 526 transitions, 5653 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:54:10,162 INFO L231 Difference]: Finished difference. Result has 376 places, 480 transitions, 4758 flow [2024-06-14 11:54:10,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4345, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4758, PETRI_PLACES=376, PETRI_TRANSITIONS=480} [2024-06-14 11:54:10,162 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 330 predicate places. [2024-06-14 11:54:10,162 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 480 transitions, 4758 flow [2024-06-14 11:54:10,162 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) [2024-06-14 11:54:10,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:10,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:10,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:54:10,163 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)] === [2024-06-14 11:54:10,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash -816242416, now seen corresponding path program 1 times [2024-06-14 11:54:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:10,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826371891] [2024-06-14 11:54:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:10,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:11,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826371891] [2024-06-14 11:54:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826371891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:11,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326035961] [2024-06-14 11:54:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:11,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:11,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 480 transitions, 4758 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) [2024-06-14 11:54:11,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:11,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:11,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:12,834 INFO L124 PetriNetUnfolderBase]: 3988/6271 cut-off events. [2024-06-14 11:54:12,834 INFO L125 PetriNetUnfolderBase]: For 2273977/2273980 co-relation queries the response was YES. [2024-06-14 11:54:12,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78764 conditions, 6271 events. 3988/6271 cut-off events. For 2273977/2273980 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 36775 event pairs, 737 based on Foata normal form. 3/6270 useless extension candidates. Maximal degree in co-relation 78585. Up to 5890 conditions per place. [2024-06-14 11:54:12,938 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 474 selfloop transitions, 30 changer transitions 0/509 dead transitions. [2024-06-14 11:54:12,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 509 transitions, 5964 flow [2024-06-14 11:54:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 11:54:12,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 11:54:12,939 INFO L175 Difference]: Start difference. First operand has 376 places, 480 transitions, 4758 flow. Second operand 8 states and 155 transitions. [2024-06-14 11:54:12,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 509 transitions, 5964 flow [2024-06-14 11:54:16,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 509 transitions, 5593 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:16,806 INFO L231 Difference]: Finished difference. Result has 376 places, 483 transitions, 4591 flow [2024-06-14 11:54:16,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4591, PETRI_PLACES=376, PETRI_TRANSITIONS=483} [2024-06-14 11:54:16,806 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 330 predicate places. [2024-06-14 11:54:16,806 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 483 transitions, 4591 flow [2024-06-14 11:54:16,807 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) [2024-06-14 11:54:16,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:16,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:54:16,807 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)] === [2024-06-14 11:54:16,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash -962608036, now seen corresponding path program 2 times [2024-06-14 11:54:16,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:16,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621220775] [2024-06-14 11:54:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:17,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621220775] [2024-06-14 11:54:17,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621220775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:17,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:17,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137560639] [2024-06-14 11:54:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:17,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:17,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 483 transitions, 4591 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) [2024-06-14 11:54:17,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:17,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:19,499 INFO L124 PetriNetUnfolderBase]: 4001/6289 cut-off events. [2024-06-14 11:54:19,499 INFO L125 PetriNetUnfolderBase]: For 2321122/2321125 co-relation queries the response was YES. [2024-06-14 11:54:19,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79126 conditions, 6289 events. 4001/6289 cut-off events. For 2321122/2321125 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36907 event pairs, 737 based on Foata normal form. 3/6288 useless extension candidates. Maximal degree in co-relation 78946. Up to 5896 conditions per place. [2024-06-14 11:54:19,611 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 470 selfloop transitions, 38 changer transitions 0/513 dead transitions. [2024-06-14 11:54:19,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 513 transitions, 6215 flow [2024-06-14 11:54:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 11:54:19,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-14 11:54:19,612 INFO L175 Difference]: Start difference. First operand has 376 places, 483 transitions, 4591 flow. Second operand 8 states and 154 transitions. [2024-06-14 11:54:19,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 513 transitions, 6215 flow [2024-06-14 11:54:24,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 513 transitions, 6033 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:24,332 INFO L231 Difference]: Finished difference. Result has 378 places, 489 transitions, 4773 flow [2024-06-14 11:54:24,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4773, PETRI_PLACES=378, PETRI_TRANSITIONS=489} [2024-06-14 11:54:24,332 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 332 predicate places. [2024-06-14 11:54:24,332 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 489 transitions, 4773 flow [2024-06-14 11:54:24,332 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) [2024-06-14 11:54:24,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:24,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:24,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:54:24,332 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:54:24,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash 74540158, now seen corresponding path program 7 times [2024-06-14 11:54:24,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:24,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437000378] [2024-06-14 11:54:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:24,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:25,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437000378] [2024-06-14 11:54:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437000378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:25,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232540999] [2024-06-14 11:54:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:25,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:25,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:25,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 489 transitions, 4773 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) [2024-06-14 11:54:25,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:25,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:25,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:28,044 INFO L124 PetriNetUnfolderBase]: 4076/6414 cut-off events. [2024-06-14 11:54:28,045 INFO L125 PetriNetUnfolderBase]: For 2503538/2503541 co-relation queries the response was YES. [2024-06-14 11:54:28,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81100 conditions, 6414 events. 4076/6414 cut-off events. For 2503538/2503541 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 37925 event pairs, 698 based on Foata normal form. 20/6430 useless extension candidates. Maximal degree in co-relation 80919. Up to 5030 conditions per place. [2024-06-14 11:54:28,157 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 377 selfloop transitions, 159 changer transitions 0/541 dead transitions. [2024-06-14 11:54:28,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 541 transitions, 6229 flow [2024-06-14 11:54:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-14 11:54:28,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-14 11:54:28,158 INFO L175 Difference]: Start difference. First operand has 378 places, 489 transitions, 4773 flow. Second operand 11 states and 230 transitions. [2024-06-14 11:54:28,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 541 transitions, 6229 flow [2024-06-14 11:54:33,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 541 transitions, 6045 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:33,703 INFO L231 Difference]: Finished difference. Result has 385 places, 490 transitions, 5010 flow [2024-06-14 11:54:33,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4589, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5010, PETRI_PLACES=385, PETRI_TRANSITIONS=490} [2024-06-14 11:54:33,703 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 339 predicate places. [2024-06-14 11:54:33,704 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 490 transitions, 5010 flow [2024-06-14 11:54:33,704 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) [2024-06-14 11:54:33,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:33,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:33,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:54:33,704 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:54:33,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2029033276, now seen corresponding path program 8 times [2024-06-14 11:54:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552610298] [2024-06-14 11:54:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:34,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:34,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552610298] [2024-06-14 11:54:34,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552610298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:34,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:34,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:34,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785032183] [2024-06-14 11:54:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:34,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:35,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:35,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 490 transitions, 5010 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) [2024-06-14 11:54:35,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:35,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:35,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:37,491 INFO L124 PetriNetUnfolderBase]: 4151/6544 cut-off events. [2024-06-14 11:54:37,491 INFO L125 PetriNetUnfolderBase]: For 2563336/2563339 co-relation queries the response was YES. [2024-06-14 11:54:37,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83494 conditions, 6544 events. 4151/6544 cut-off events. For 2563336/2563339 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 39021 event pairs, 713 based on Foata normal form. 20/6560 useless extension candidates. Maximal degree in co-relation 83311. Up to 5155 conditions per place. [2024-06-14 11:54:37,604 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 375 selfloop transitions, 161 changer transitions 0/541 dead transitions. [2024-06-14 11:54:37,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 541 transitions, 6446 flow [2024-06-14 11:54:37,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-14 11:54:37,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2024-06-14 11:54:37,605 INFO L175 Difference]: Start difference. First operand has 385 places, 490 transitions, 5010 flow. Second operand 11 states and 228 transitions. [2024-06-14 11:54:37,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 541 transitions, 6446 flow [2024-06-14 11:54:42,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 541 transitions, 6057 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:42,343 INFO L231 Difference]: Finished difference. Result has 387 places, 491 transitions, 5048 flow [2024-06-14 11:54:42,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4621, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5048, PETRI_PLACES=387, PETRI_TRANSITIONS=491} [2024-06-14 11:54:42,343 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 341 predicate places. [2024-06-14 11:54:42,343 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 491 transitions, 5048 flow [2024-06-14 11:54:42,343 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) [2024-06-14 11:54:42,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:42,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:42,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:54:42,344 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:54:42,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:42,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1835093866, now seen corresponding path program 9 times [2024-06-14 11:54:42,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:42,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322428292] [2024-06-14 11:54:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:42,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:43,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322428292] [2024-06-14 11:54:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322428292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:43,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:43,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:43,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269231010] [2024-06-14 11:54:43,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:43,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:43,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:43,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:43,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 491 transitions, 5048 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) [2024-06-14 11:54:43,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:43,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:43,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:45,784 INFO L124 PetriNetUnfolderBase]: 4226/6679 cut-off events. [2024-06-14 11:54:45,784 INFO L125 PetriNetUnfolderBase]: For 2603804/2603807 co-relation queries the response was YES. [2024-06-14 11:54:45,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84656 conditions, 6679 events. 4226/6679 cut-off events. For 2603804/2603807 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 40119 event pairs, 737 based on Foata normal form. 20/6695 useless extension candidates. Maximal degree in co-relation 84472. Up to 5280 conditions per place. [2024-06-14 11:54:45,901 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 380 selfloop transitions, 158 changer transitions 0/543 dead transitions. [2024-06-14 11:54:45,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 543 transitions, 6512 flow [2024-06-14 11:54:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-06-14 11:54:45,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 11:54:45,902 INFO L175 Difference]: Start difference. First operand has 387 places, 491 transitions, 5048 flow. Second operand 11 states and 231 transitions. [2024-06-14 11:54:45,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 543 transitions, 6512 flow [2024-06-14 11:54:50,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 543 transitions, 6117 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:50,514 INFO L231 Difference]: Finished difference. Result has 389 places, 492 transitions, 5076 flow [2024-06-14 11:54:50,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5076, PETRI_PLACES=389, PETRI_TRANSITIONS=492} [2024-06-14 11:54:50,514 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 343 predicate places. [2024-06-14 11:54:50,514 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 492 transitions, 5076 flow [2024-06-14 11:54:50,514 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) [2024-06-14 11:54:50,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:50,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:50,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:54:50,515 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:54:50,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1829583616, now seen corresponding path program 10 times [2024-06-14 11:54:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:50,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102837645] [2024-06-14 11:54:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:50,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:51,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:51,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102837645] [2024-06-14 11:54:51,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102837645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:51,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:51,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138908844] [2024-06-14 11:54:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:51,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:51,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:51,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:51,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:51,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 492 transitions, 5076 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) [2024-06-14 11:54:51,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:51,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:51,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:54,124 INFO L124 PetriNetUnfolderBase]: 4284/6777 cut-off events. [2024-06-14 11:54:54,124 INFO L125 PetriNetUnfolderBase]: For 2612625/2612628 co-relation queries the response was YES. [2024-06-14 11:54:54,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85444 conditions, 6777 events. 4284/6777 cut-off events. For 2612625/2612628 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40919 event pairs, 718 based on Foata normal form. 16/6789 useless extension candidates. Maximal degree in co-relation 85259. Up to 5028 conditions per place. [2024-06-14 11:54:54,234 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 379 selfloop transitions, 163 changer transitions 0/547 dead transitions. [2024-06-14 11:54:54,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 547 transitions, 6584 flow [2024-06-14 11:54:54,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-06-14 11:54:54,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686868686868687 [2024-06-14 11:54:54,236 INFO L175 Difference]: Start difference. First operand has 389 places, 492 transitions, 5076 flow. Second operand 11 states and 232 transitions. [2024-06-14 11:54:54,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 547 transitions, 6584 flow [2024-06-14 11:54:58,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 547 transitions, 6193 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:58,378 INFO L231 Difference]: Finished difference. Result has 391 places, 493 transitions, 5119 flow [2024-06-14 11:54:58,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4685, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5119, PETRI_PLACES=391, PETRI_TRANSITIONS=493} [2024-06-14 11:54:58,378 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 345 predicate places. [2024-06-14 11:54:58,378 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 493 transitions, 5119 flow [2024-06-14 11:54:58,379 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) [2024-06-14 11:54:58,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:58,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:58,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:54:58,379 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:54:58,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1835309347, now seen corresponding path program 2 times [2024-06-14 11:54:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:58,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610000801] [2024-06-14 11:54:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:59,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:59,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610000801] [2024-06-14 11:54:59,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610000801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:59,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:59,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045547736] [2024-06-14 11:54:59,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:59,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:59,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:54:59,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 493 transitions, 5119 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) [2024-06-14 11:54:59,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:59,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:54:59,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:01,839 INFO L124 PetriNetUnfolderBase]: 4301/6799 cut-off events. [2024-06-14 11:55:01,839 INFO L125 PetriNetUnfolderBase]: For 2551789/2551792 co-relation queries the response was YES. [2024-06-14 11:55:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85345 conditions, 6799 events. 4301/6799 cut-off events. For 2551789/2551792 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 41035 event pairs, 785 based on Foata normal form. 4/6799 useless extension candidates. Maximal degree in co-relation 85159. Up to 5887 conditions per place. [2024-06-14 11:55:01,961 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 419 selfloop transitions, 118 changer transitions 0/542 dead transitions. [2024-06-14 11:55:01,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 542 transitions, 6493 flow [2024-06-14 11:55:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-14 11:55:01,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-06-14 11:55:01,962 INFO L175 Difference]: Start difference. First operand has 391 places, 493 transitions, 5119 flow. Second operand 11 states and 222 transitions. [2024-06-14 11:55:01,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 542 transitions, 6493 flow [2024-06-14 11:55:06,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 542 transitions, 6079 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:06,426 INFO L231 Difference]: Finished difference. Result has 394 places, 498 transitions, 5108 flow [2024-06-14 11:55:06,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4709, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5108, PETRI_PLACES=394, PETRI_TRANSITIONS=498} [2024-06-14 11:55:06,427 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 348 predicate places. [2024-06-14 11:55:06,427 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 498 transitions, 5108 flow [2024-06-14 11:55:06,427 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) [2024-06-14 11:55:06,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:06,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:06,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:55:06,427 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:55:06,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2036658067, now seen corresponding path program 3 times [2024-06-14 11:55:06,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:06,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871798438] [2024-06-14 11:55:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:06,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871798438] [2024-06-14 11:55:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871798438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:07,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015256338] [2024-06-14 11:55:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:07,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:07,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:55:07,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 498 transitions, 5108 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) [2024-06-14 11:55:07,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:07,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:55:07,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:09,919 INFO L124 PetriNetUnfolderBase]: 4329/6867 cut-off events. [2024-06-14 11:55:09,919 INFO L125 PetriNetUnfolderBase]: For 2577723/2577726 co-relation queries the response was YES. [2024-06-14 11:55:10,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85583 conditions, 6867 events. 4329/6867 cut-off events. For 2577723/2577726 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 41786 event pairs, 805 based on Foata normal form. 4/6867 useless extension candidates. Maximal degree in co-relation 85395. Up to 5926 conditions per place. [2024-06-14 11:55:10,227 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 418 selfloop transitions, 126 changer transitions 0/549 dead transitions. [2024-06-14 11:55:10,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 549 transitions, 6509 flow [2024-06-14 11:55:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-14 11:55:10,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:55:10,229 INFO L175 Difference]: Start difference. First operand has 394 places, 498 transitions, 5108 flow. Second operand 11 states and 220 transitions. [2024-06-14 11:55:10,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 549 transitions, 6509 flow [2024-06-14 11:55:14,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 549 transitions, 6142 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:14,835 INFO L231 Difference]: Finished difference. Result has 398 places, 506 transitions, 5203 flow [2024-06-14 11:55:14,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4751, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5203, PETRI_PLACES=398, PETRI_TRANSITIONS=506} [2024-06-14 11:55:14,836 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 352 predicate places. [2024-06-14 11:55:14,836 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 506 transitions, 5203 flow [2024-06-14 11:55:14,836 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) [2024-06-14 11:55:14,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:14,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:14,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:55:14,836 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:55:14,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1806963585, now seen corresponding path program 4 times [2024-06-14 11:55:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:14,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759966221] [2024-06-14 11:55:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:16,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:16,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759966221] [2024-06-14 11:55:16,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759966221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:16,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:16,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:16,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019872993] [2024-06-14 11:55:16,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:16,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:16,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:16,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:16,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:16,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:55:16,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 506 transitions, 5203 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) [2024-06-14 11:55:16,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:16,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:55:16,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:18,481 INFO L124 PetriNetUnfolderBase]: 4346/6874 cut-off events. [2024-06-14 11:55:18,481 INFO L125 PetriNetUnfolderBase]: For 2618016/2618019 co-relation queries the response was YES. [2024-06-14 11:55:18,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86448 conditions, 6874 events. 4346/6874 cut-off events. For 2618016/2618019 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 41669 event pairs, 790 based on Foata normal form. 4/6874 useless extension candidates. Maximal degree in co-relation 86258. Up to 5953 conditions per place. [2024-06-14 11:55:18,608 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 422 selfloop transitions, 124 changer transitions 0/551 dead transitions. [2024-06-14 11:55:18,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 551 transitions, 6545 flow [2024-06-14 11:55:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:18,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-14 11:55:18,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44646464646464645 [2024-06-14 11:55:18,609 INFO L175 Difference]: Start difference. First operand has 398 places, 506 transitions, 5203 flow. Second operand 11 states and 221 transitions. [2024-06-14 11:55:18,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 551 transitions, 6545 flow [2024-06-14 11:55:23,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 551 transitions, 6196 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:23,236 INFO L231 Difference]: Finished difference. Result has 403 places, 508 transitions, 5235 flow [2024-06-14 11:55:23,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4858, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5235, PETRI_PLACES=403, PETRI_TRANSITIONS=508} [2024-06-14 11:55:23,237 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 357 predicate places. [2024-06-14 11:55:23,237 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 508 transitions, 5235 flow [2024-06-14 11:55:23,237 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) [2024-06-14 11:55:23,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:23,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:23,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:55:23,237 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:55:23,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:23,238 INFO L85 PathProgramCache]: Analyzing trace with hash -298458107, now seen corresponding path program 5 times [2024-06-14 11:55:23,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:23,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279146122] [2024-06-14 11:55:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:23,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279146122] [2024-06-14 11:55:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279146122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:24,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:24,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:55:24,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605632856] [2024-06-14 11:55:24,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:55:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:55:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:24,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:55:24,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 508 transitions, 5235 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) [2024-06-14 11:55:24,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:24,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:55:24,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:26,703 INFO L124 PetriNetUnfolderBase]: 4363/6896 cut-off events. [2024-06-14 11:55:26,703 INFO L125 PetriNetUnfolderBase]: For 2650960/2650963 co-relation queries the response was YES. [2024-06-14 11:55:26,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86263 conditions, 6896 events. 4363/6896 cut-off events. For 2650960/2650963 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 41801 event pairs, 762 based on Foata normal form. 4/6896 useless extension candidates. Maximal degree in co-relation 86072. Up to 5885 conditions per place. [2024-06-14 11:55:26,831 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 414 selfloop transitions, 135 changer transitions 0/554 dead transitions. [2024-06-14 11:55:26,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 554 transitions, 6585 flow [2024-06-14 11:55:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-14 11:55:26,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44646464646464645 [2024-06-14 11:55:26,832 INFO L175 Difference]: Start difference. First operand has 403 places, 508 transitions, 5235 flow. Second operand 11 states and 221 transitions. [2024-06-14 11:55:26,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 554 transitions, 6585 flow [2024-06-14 11:55:31,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 554 transitions, 6198 flow, removed 60 selfloop flow, removed 11 redundant places. [2024-06-14 11:55:31,750 INFO L231 Difference]: Finished difference. Result has 403 places, 510 transitions, 5251 flow [2024-06-14 11:55:31,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4848, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5251, PETRI_PLACES=403, PETRI_TRANSITIONS=510} [2024-06-14 11:55:31,751 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 357 predicate places. [2024-06-14 11:55:31,751 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 510 transitions, 5251 flow [2024-06-14 11:55:31,751 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) [2024-06-14 11:55:31,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:31,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:31,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:55:31,752 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)] === [2024-06-14 11:55:31,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2018140985, now seen corresponding path program 1 times [2024-06-14 11:55:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243235495] [2024-06-14 11:55:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:32,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:32,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243235495] [2024-06-14 11:55:32,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243235495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:32,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:32,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537074924] [2024-06-14 11:55:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:32,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:32,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:33,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:55:33,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 510 transitions, 5251 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) [2024-06-14 11:55:33,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:33,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:55:33,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:34,866 INFO L124 PetriNetUnfolderBase]: 3958/6443 cut-off events. [2024-06-14 11:55:34,866 INFO L125 PetriNetUnfolderBase]: For 2696776/2696786 co-relation queries the response was YES. [2024-06-14 11:55:34,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83733 conditions, 6443 events. 3958/6443 cut-off events. For 2696776/2696786 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 40718 event pairs, 745 based on Foata normal form. 10/6391 useless extension candidates. Maximal degree in co-relation 83543. Up to 5663 conditions per place. [2024-06-14 11:55:34,979 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 453 selfloop transitions, 22 changer transitions 0/543 dead transitions. [2024-06-14 11:55:34,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 543 transitions, 6369 flow [2024-06-14 11:55:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-14 11:55:34,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-14 11:55:34,980 INFO L175 Difference]: Start difference. First operand has 403 places, 510 transitions, 5251 flow. Second operand 9 states and 185 transitions. [2024-06-14 11:55:34,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 543 transitions, 6369 flow [2024-06-14 11:55:40,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 543 transitions, 5984 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:40,208 INFO L231 Difference]: Finished difference. Result has 403 places, 513 transitions, 5014 flow [2024-06-14 11:55:40,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4866, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5014, PETRI_PLACES=403, PETRI_TRANSITIONS=513} [2024-06-14 11:55:40,209 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 357 predicate places. [2024-06-14 11:55:40,209 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 513 transitions, 5014 flow [2024-06-14 11:55:40,209 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) [2024-06-14 11:55:40,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:40,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:40,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:55:40,209 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)] === [2024-06-14 11:55:40,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash -162594997, now seen corresponding path program 2 times [2024-06-14 11:55:40,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921699504] [2024-06-14 11:55:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:41,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921699504] [2024-06-14 11:55:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921699504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726978953] [2024-06-14 11:55:41,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:41,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:41,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:55:41,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 513 transitions, 5014 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) [2024-06-14 11:55:41,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:41,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:55:41,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:43,468 INFO L124 PetriNetUnfolderBase]: 3965/6458 cut-off events. [2024-06-14 11:55:43,468 INFO L125 PetriNetUnfolderBase]: For 2748399/2748432 co-relation queries the response was YES. [2024-06-14 11:55:43,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84146 conditions, 6458 events. 3965/6458 cut-off events. For 2748399/2748432 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 40915 event pairs, 755 based on Foata normal form. 11/6403 useless extension candidates. Maximal degree in co-relation 83955. Up to 5663 conditions per place. [2024-06-14 11:55:43,590 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 441 selfloop transitions, 35 changer transitions 0/544 dead transitions. [2024-06-14 11:55:43,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 544 transitions, 6516 flow [2024-06-14 11:55:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-14 11:55:43,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-14 11:55:43,592 INFO L175 Difference]: Start difference. First operand has 403 places, 513 transitions, 5014 flow. Second operand 9 states and 183 transitions. [2024-06-14 11:55:43,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 544 transitions, 6516 flow [2024-06-14 11:55:49,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 544 transitions, 6390 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-14 11:55:49,110 INFO L231 Difference]: Finished difference. Result has 405 places, 519 transitions, 5166 flow [2024-06-14 11:55:49,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5166, PETRI_PLACES=405, PETRI_TRANSITIONS=519} [2024-06-14 11:55:49,110 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 359 predicate places. [2024-06-14 11:55:49,110 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 519 transitions, 5166 flow [2024-06-14 11:55:49,110 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) [2024-06-14 11:55:49,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:49,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:49,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:55:49,110 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)] === [2024-06-14 11:55:49,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:49,111 INFO L85 PathProgramCache]: Analyzing trace with hash -809567248, now seen corresponding path program 1 times [2024-06-14 11:55:49,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:49,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909001178] [2024-06-14 11:55:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:49,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909001178] [2024-06-14 11:55:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909001178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:50,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:55:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063879320] [2024-06-14 11:55:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:50,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:55:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:55:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:55:50,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:55:50,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 519 transitions, 5166 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) [2024-06-14 11:55:50,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:50,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:55:50,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:52,729 INFO L124 PetriNetUnfolderBase]: 3975/6472 cut-off events. [2024-06-14 11:55:52,729 INFO L125 PetriNetUnfolderBase]: For 2791475/2791508 co-relation queries the response was YES. [2024-06-14 11:55:52,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84942 conditions, 6472 events. 3975/6472 cut-off events. For 2791475/2791508 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 40984 event pairs, 754 based on Foata normal form. 7/6413 useless extension candidates. Maximal degree in co-relation 84750. Up to 5709 conditions per place. [2024-06-14 11:55:52,851 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 459 selfloop transitions, 20 changer transitions 0/547 dead transitions. [2024-06-14 11:55:52,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 547 transitions, 6328 flow [2024-06-14 11:55:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:55:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:55:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-14 11:55:52,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:55:52,852 INFO L175 Difference]: Start difference. First operand has 405 places, 519 transitions, 5166 flow. Second operand 9 states and 180 transitions. [2024-06-14 11:55:52,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 547 transitions, 6328 flow [2024-06-14 11:55:58,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 547 transitions, 6193 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-14 11:55:58,900 INFO L231 Difference]: Finished difference. Result has 409 places, 522 transitions, 5217 flow [2024-06-14 11:55:58,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5031, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5217, PETRI_PLACES=409, PETRI_TRANSITIONS=522} [2024-06-14 11:55:58,901 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 363 predicate places. [2024-06-14 11:55:58,901 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 522 transitions, 5217 flow [2024-06-14 11:55:58,901 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) [2024-06-14 11:55:58,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:58,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:58,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:55:58,901 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)] === [2024-06-14 11:55:58,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:58,902 INFO L85 PathProgramCache]: Analyzing trace with hash -449407543, now seen corresponding path program 3 times [2024-06-14 11:55:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:58,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40998157] [2024-06-14 11:55:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:00,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:00,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40998157] [2024-06-14 11:56:00,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40998157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:00,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:00,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:56:00,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021308188] [2024-06-14 11:56:00,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:00,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:56:00,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:56:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:56:00,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-14 11:56:00,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 522 transitions, 5217 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) [2024-06-14 11:56:00,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:00,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-14 11:56:00,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:01,981 INFO L124 PetriNetUnfolderBase]: 3971/6465 cut-off events. [2024-06-14 11:56:01,981 INFO L125 PetriNetUnfolderBase]: For 2801984/2802017 co-relation queries the response was YES. [2024-06-14 11:56:02,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85081 conditions, 6465 events. 3971/6465 cut-off events. For 2801984/2802017 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 40880 event pairs, 753 based on Foata normal form. 10/6410 useless extension candidates. Maximal degree in co-relation 84887. Up to 5686 conditions per place. [2024-06-14 11:56:02,105 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 451 selfloop transitions, 27 changer transitions 0/546 dead transitions. [2024-06-14 11:56:02,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 546 transitions, 6233 flow [2024-06-14 11:56:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:56:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:56:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-14 11:56:02,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469135802469136 [2024-06-14 11:56:02,106 INFO L175 Difference]: Start difference. First operand has 409 places, 522 transitions, 5217 flow. Second operand 9 states and 181 transitions. [2024-06-14 11:56:02,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 546 transitions, 6233 flow [2024-06-14 11:56:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 546 transitions, 6005 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-14 11:56:08,045 INFO L231 Difference]: Finished difference. Result has 411 places, 522 transitions, 5049 flow [2024-06-14 11:56:08,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5049, PETRI_PLACES=411, PETRI_TRANSITIONS=522} [2024-06-14 11:56:08,045 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 365 predicate places. [2024-06-14 11:56:08,045 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 522 transitions, 5049 flow [2024-06-14 11:56:08,045 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) [2024-06-14 11:56:08,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:08,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:08,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:56:08,046 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)] === [2024-06-14 11:56:08,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:08,046 INFO L85 PathProgramCache]: Analyzing trace with hash -957280996, now seen corresponding path program 3 times [2024-06-14 11:56:08,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:08,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474230770] [2024-06-14 11:56:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:08,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474230770] [2024-06-14 11:56:08,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474230770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:08,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:08,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:56:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341018676] [2024-06-14 11:56:08,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:08,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:56:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:56:08,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:56:09,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:56:09,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 522 transitions, 5049 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) [2024-06-14 11:56:09,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:09,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:56:09,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:10,886 INFO L124 PetriNetUnfolderBase]: 4408/6976 cut-off events. [2024-06-14 11:56:10,886 INFO L125 PetriNetUnfolderBase]: For 2797409/2797412 co-relation queries the response was YES. [2024-06-14 11:56:10,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88275 conditions, 6976 events. 4408/6976 cut-off events. For 2797409/2797412 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 42472 event pairs, 809 based on Foata normal form. 3/6975 useless extension candidates. Maximal degree in co-relation 88080. Up to 6568 conditions per place. [2024-06-14 11:56:11,024 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 514 selfloop transitions, 29 changer transitions 0/548 dead transitions. [2024-06-14 11:56:11,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 548 transitions, 6317 flow [2024-06-14 11:56:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:56:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:56:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-14 11:56:11,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 11:56:11,026 INFO L175 Difference]: Start difference. First operand has 411 places, 522 transitions, 5049 flow. Second operand 8 states and 153 transitions. [2024-06-14 11:56:11,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 548 transitions, 6317 flow [2024-06-14 11:56:15,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 548 transitions, 6245 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 11:56:15,439 INFO L231 Difference]: Finished difference. Result has 411 places, 525 transitions, 5171 flow [2024-06-14 11:56:15,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4977, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5171, PETRI_PLACES=411, PETRI_TRANSITIONS=525} [2024-06-14 11:56:15,439 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 365 predicate places. [2024-06-14 11:56:15,439 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 525 transitions, 5171 flow [2024-06-14 11:56:15,439 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) [2024-06-14 11:56:15,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:15,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:15,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:56:15,439 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)] === [2024-06-14 11:56:15,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1851699660, now seen corresponding path program 1 times [2024-06-14 11:56:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602246335] [2024-06-14 11:56:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:16,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:16,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602246335] [2024-06-14 11:56:16,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602246335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:16,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:16,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:56:16,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680117988] [2024-06-14 11:56:16,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:56:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:56:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:56:16,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:56:16,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 525 transitions, 5171 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) [2024-06-14 11:56:16,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:16,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:56:16,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:18,350 INFO L124 PetriNetUnfolderBase]: 4267/6836 cut-off events. [2024-06-14 11:56:18,350 INFO L125 PetriNetUnfolderBase]: For 2835925/2835928 co-relation queries the response was YES. [2024-06-14 11:56:18,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87352 conditions, 6836 events. 4267/6836 cut-off events. For 2835925/2835928 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 42334 event pairs, 793 based on Foata normal form. 2/6827 useless extension candidates. Maximal degree in co-relation 87156. Up to 6119 conditions per place. [2024-06-14 11:56:18,477 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 468 selfloop transitions, 29 changer transitions 0/552 dead transitions. [2024-06-14 11:56:18,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 552 transitions, 6357 flow [2024-06-14 11:56:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:56:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:56:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 11:56:18,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-14 11:56:18,478 INFO L175 Difference]: Start difference. First operand has 411 places, 525 transitions, 5171 flow. Second operand 8 states and 161 transitions. [2024-06-14 11:56:18,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 552 transitions, 6357 flow [2024-06-14 11:56:22,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 552 transitions, 6191 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-14 11:56:22,742 INFO L231 Difference]: Finished difference. Result has 413 places, 528 transitions, 5187 flow [2024-06-14 11:56:22,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5187, PETRI_PLACES=413, PETRI_TRANSITIONS=528} [2024-06-14 11:56:22,742 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 367 predicate places. [2024-06-14 11:56:22,742 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 528 transitions, 5187 flow [2024-06-14 11:56:22,743 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) [2024-06-14 11:56:22,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:22,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:22,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:56:22,743 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)] === [2024-06-14 11:56:22,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:22,743 INFO L85 PathProgramCache]: Analyzing trace with hash 865224059, now seen corresponding path program 1 times [2024-06-14 11:56:22,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:22,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294817407] [2024-06-14 11:56:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:22,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:23,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:23,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294817407] [2024-06-14 11:56:23,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294817407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:23,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:23,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:56:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723521406] [2024-06-14 11:56:23,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:56:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:23,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:56:23,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:56:23,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:56:23,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 528 transitions, 5187 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) [2024-06-14 11:56:23,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:23,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:56:23,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:25,732 INFO L124 PetriNetUnfolderBase]: 4272/6843 cut-off events. [2024-06-14 11:56:25,732 INFO L125 PetriNetUnfolderBase]: For 2861496/2861499 co-relation queries the response was YES. [2024-06-14 11:56:25,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88044 conditions, 6843 events. 4272/6843 cut-off events. For 2861496/2861499 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 42443 event pairs, 788 based on Foata normal form. 3/6835 useless extension candidates. Maximal degree in co-relation 87847. Up to 6162 conditions per place. [2024-06-14 11:56:25,857 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 474 selfloop transitions, 22 changer transitions 0/551 dead transitions. [2024-06-14 11:56:25,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 551 transitions, 6333 flow [2024-06-14 11:56:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:56:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:56:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 11:56:25,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 11:56:25,858 INFO L175 Difference]: Start difference. First operand has 413 places, 528 transitions, 5187 flow. Second operand 8 states and 155 transitions. [2024-06-14 11:56:25,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 551 transitions, 6333 flow [2024-06-14 11:56:30,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 551 transitions, 6195 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-14 11:56:30,563 INFO L231 Difference]: Finished difference. Result has 416 places, 531 transitions, 5209 flow [2024-06-14 11:56:30,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5209, PETRI_PLACES=416, PETRI_TRANSITIONS=531} [2024-06-14 11:56:30,564 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 370 predicate places. [2024-06-14 11:56:30,564 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 531 transitions, 5209 flow [2024-06-14 11:56:30,564 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) [2024-06-14 11:56:30,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:30,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:56:30,564 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:56:30,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash -157263152, now seen corresponding path program 2 times [2024-06-14 11:56:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:30,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638713569] [2024-06-14 11:56:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638713569] [2024-06-14 11:56:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638713569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:31,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:56:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051336925] [2024-06-14 11:56:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:31,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:56:31,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:56:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:56:31,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:56:31,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 531 transitions, 5209 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) [2024-06-14 11:56:31,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:31,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:56:31,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:33,491 INFO L124 PetriNetUnfolderBase]: 4282/6859 cut-off events. [2024-06-14 11:56:33,491 INFO L125 PetriNetUnfolderBase]: For 2909364/2909367 co-relation queries the response was YES. [2024-06-14 11:56:33,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88692 conditions, 6859 events. 4282/6859 cut-off events. For 2909364/2909367 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 42557 event pairs, 806 based on Foata normal form. 2/6850 useless extension candidates. Maximal degree in co-relation 88494. Up to 6131 conditions per place. [2024-06-14 11:56:33,616 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 467 selfloop transitions, 34 changer transitions 0/556 dead transitions. [2024-06-14 11:56:33,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 556 transitions, 6425 flow [2024-06-14 11:56:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:56:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:56:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-14 11:56:33,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-14 11:56:33,617 INFO L175 Difference]: Start difference. First operand has 416 places, 531 transitions, 5209 flow. Second operand 8 states and 161 transitions. [2024-06-14 11:56:33,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 556 transitions, 6425 flow [2024-06-14 11:56:37,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 556 transitions, 6287 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-14 11:56:37,361 INFO L231 Difference]: Finished difference. Result has 418 places, 534 transitions, 5271 flow [2024-06-14 11:56:37,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5071, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5271, PETRI_PLACES=418, PETRI_TRANSITIONS=534} [2024-06-14 11:56:37,362 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 372 predicate places. [2024-06-14 11:56:37,362 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 534 transitions, 5271 flow [2024-06-14 11:56:37,362 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) [2024-06-14 11:56:37,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:37,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:37,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:56:37,362 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:56:37,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1851550178, now seen corresponding path program 4 times [2024-06-14 11:56:37,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898502056] [2024-06-14 11:56:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:37,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898502056] [2024-06-14 11:56:38,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898502056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:38,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:38,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:56:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703624219] [2024-06-14 11:56:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:38,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:56:38,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:56:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:56:38,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:56:38,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 534 transitions, 5271 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) [2024-06-14 11:56:38,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:38,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:56:38,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:40,364 INFO L124 PetriNetUnfolderBase]: 4438/7022 cut-off events. [2024-06-14 11:56:40,364 INFO L125 PetriNetUnfolderBase]: For 2947118/2947121 co-relation queries the response was YES. [2024-06-14 11:56:40,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90891 conditions, 7022 events. 4438/7022 cut-off events. For 2947118/2947121 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 42775 event pairs, 807 based on Foata normal form. 3/7021 useless extension candidates. Maximal degree in co-relation 90692. Up to 6601 conditions per place. [2024-06-14 11:56:40,482 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 515 selfloop transitions, 37 changer transitions 0/557 dead transitions. [2024-06-14 11:56:40,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 557 transitions, 6577 flow [2024-06-14 11:56:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:56:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:56:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 11:56:40,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-14 11:56:40,483 INFO L175 Difference]: Start difference. First operand has 418 places, 534 transitions, 5271 flow. Second operand 8 states and 151 transitions. [2024-06-14 11:56:40,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 557 transitions, 6577 flow [2024-06-14 11:56:46,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 557 transitions, 6407 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-14 11:56:46,302 INFO L231 Difference]: Finished difference. Result has 420 places, 537 transitions, 5339 flow [2024-06-14 11:56:46,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5101, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5339, PETRI_PLACES=420, PETRI_TRANSITIONS=537} [2024-06-14 11:56:46,303 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 374 predicate places. [2024-06-14 11:56:46,303 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 537 transitions, 5339 flow [2024-06-14 11:56:46,303 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) [2024-06-14 11:56:46,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:46,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:46,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:56:46,303 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:56:46,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1733930522, now seen corresponding path program 5 times [2024-06-14 11:56:46,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:46,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608866345] [2024-06-14 11:56:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:47,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608866345] [2024-06-14 11:56:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608866345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:47,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:47,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:56:47,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281014598] [2024-06-14 11:56:47,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:47,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:56:47,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:56:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:56:47,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:56:47,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 537 transitions, 5339 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) [2024-06-14 11:56:47,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:47,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:56:47,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:49,390 INFO L124 PetriNetUnfolderBase]: 4451/7050 cut-off events. [2024-06-14 11:56:49,391 INFO L125 PetriNetUnfolderBase]: For 2996361/2996364 co-relation queries the response was YES. [2024-06-14 11:56:49,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91843 conditions, 7050 events. 4451/7050 cut-off events. For 2996361/2996364 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 43068 event pairs, 807 based on Foata normal form. 3/7049 useless extension candidates. Maximal degree in co-relation 91643. Up to 6588 conditions per place. [2024-06-14 11:56:49,525 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 497 selfloop transitions, 60 changer transitions 0/562 dead transitions. [2024-06-14 11:56:49,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 562 transitions, 7431 flow [2024-06-14 11:56:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:56:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:56:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 11:56:49,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-14 11:56:49,526 INFO L175 Difference]: Start difference. First operand has 420 places, 537 transitions, 5339 flow. Second operand 8 states and 151 transitions. [2024-06-14 11:56:49,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 562 transitions, 7431 flow [2024-06-14 11:56:55,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 562 transitions, 7215 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-14 11:56:55,121 INFO L231 Difference]: Finished difference. Result has 422 places, 543 transitions, 5571 flow [2024-06-14 11:56:55,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5123, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5571, PETRI_PLACES=422, PETRI_TRANSITIONS=543} [2024-06-14 11:56:55,122 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 376 predicate places. [2024-06-14 11:56:55,122 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 543 transitions, 5571 flow [2024-06-14 11:56:55,122 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) [2024-06-14 11:56:55,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:55,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:55,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:56:55,122 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:56:55,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:55,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1644896490, now seen corresponding path program 3 times [2024-06-14 11:56:55,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:55,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595101865] [2024-06-14 11:56:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:55,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:56,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:56,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595101865] [2024-06-14 11:56:56,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595101865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:56,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:56,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:56:56,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264204684] [2024-06-14 11:56:56,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:56,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:56:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:56:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:56:56,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:56:56,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 543 transitions, 5571 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) [2024-06-14 11:56:56,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:56,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:56:56,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:58,222 INFO L124 PetriNetUnfolderBase]: 4325/6925 cut-off events. [2024-06-14 11:56:58,222 INFO L125 PetriNetUnfolderBase]: For 3066192/3066195 co-relation queries the response was YES. [2024-06-14 11:56:58,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91817 conditions, 6925 events. 4325/6925 cut-off events. For 3066192/3066195 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 42999 event pairs, 791 based on Foata normal form. 2/6916 useless extension candidates. Maximal degree in co-relation 91616. Up to 6156 conditions per place. [2024-06-14 11:56:58,356 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 465 selfloop transitions, 46 changer transitions 0/569 dead transitions. [2024-06-14 11:56:58,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 569 transitions, 7251 flow [2024-06-14 11:56:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:56:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:56:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-14 11:56:58,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-14 11:56:58,357 INFO L175 Difference]: Start difference. First operand has 422 places, 543 transitions, 5571 flow. Second operand 8 states and 159 transitions. [2024-06-14 11:56:58,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 569 transitions, 7251 flow [2024-06-14 11:57:03,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 569 transitions, 6975 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-06-14 11:57:03,708 INFO L231 Difference]: Finished difference. Result has 425 places, 549 transitions, 5659 flow [2024-06-14 11:57:03,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5659, PETRI_PLACES=425, PETRI_TRANSITIONS=549} [2024-06-14 11:57:03,709 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 379 predicate places. [2024-06-14 11:57:03,709 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 549 transitions, 5659 flow [2024-06-14 11:57:03,709 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) [2024-06-14 11:57:03,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:03,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:03,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:57:03,710 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:57:03,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1644629363, now seen corresponding path program 2 times [2024-06-14 11:57:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:03,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607661042] [2024-06-14 11:57:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:05,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:05,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607661042] [2024-06-14 11:57:05,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607661042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:05,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:05,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:57:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659119158] [2024-06-14 11:57:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:05,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:57:05,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:57:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:57:05,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:57:05,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 549 transitions, 5659 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) [2024-06-14 11:57:05,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:05,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:57:05,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:07,301 INFO L124 PetriNetUnfolderBase]: 4339/6942 cut-off events. [2024-06-14 11:57:07,302 INFO L125 PetriNetUnfolderBase]: For 3105952/3105955 co-relation queries the response was YES. [2024-06-14 11:57:07,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92517 conditions, 6942 events. 4339/6942 cut-off events. For 3105952/3105955 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 43083 event pairs, 789 based on Foata normal form. 3/6934 useless extension candidates. Maximal degree in co-relation 92315. Up to 6227 conditions per place. [2024-06-14 11:57:07,421 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 477 selfloop transitions, 38 changer transitions 0/573 dead transitions. [2024-06-14 11:57:07,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 573 transitions, 7277 flow [2024-06-14 11:57:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:57:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:57:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 11:57:07,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 11:57:07,422 INFO L175 Difference]: Start difference. First operand has 425 places, 549 transitions, 5659 flow. Second operand 8 states and 155 transitions. [2024-06-14 11:57:07,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 573 transitions, 7277 flow [2024-06-14 11:57:11,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 573 transitions, 7119 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-14 11:57:11,687 INFO L231 Difference]: Finished difference. Result has 429 places, 555 transitions, 5821 flow [2024-06-14 11:57:11,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5501, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5821, PETRI_PLACES=429, PETRI_TRANSITIONS=555} [2024-06-14 11:57:11,687 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 383 predicate places. [2024-06-14 11:57:11,687 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 555 transitions, 5821 flow [2024-06-14 11:57:11,688 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) [2024-06-14 11:57:11,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:11,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:11,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:57:11,688 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)] === [2024-06-14 11:57:11,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1644896273, now seen corresponding path program 3 times [2024-06-14 11:57:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596244492] [2024-06-14 11:57:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596244492] [2024-06-14 11:57:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596244492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:12,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:57:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511175198] [2024-06-14 11:57:12,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:57:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:57:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:57:13,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-14 11:57:13,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 555 transitions, 5821 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) [2024-06-14 11:57:13,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:13,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-14 11:57:13,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:15,032 INFO L124 PetriNetUnfolderBase]: 4344/6949 cut-off events. [2024-06-14 11:57:15,032 INFO L125 PetriNetUnfolderBase]: For 3146022/3146025 co-relation queries the response was YES. [2024-06-14 11:57:15,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93101 conditions, 6949 events. 4344/6949 cut-off events. For 3146022/3146025 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 43136 event pairs, 789 based on Foata normal form. 3/6941 useless extension candidates. Maximal degree in co-relation 92897. Up to 6246 conditions per place. [2024-06-14 11:57:15,168 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 487 selfloop transitions, 30 changer transitions 0/575 dead transitions. [2024-06-14 11:57:15,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 575 transitions, 7019 flow [2024-06-14 11:57:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:57:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:57:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-14 11:57:15,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 11:57:15,169 INFO L175 Difference]: Start difference. First operand has 429 places, 555 transitions, 5821 flow. Second operand 8 states and 153 transitions. [2024-06-14 11:57:15,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 575 transitions, 7019 flow [2024-06-14 11:57:21,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 575 transitions, 6825 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-14 11:57:21,501 INFO L231 Difference]: Finished difference. Result has 433 places, 558 transitions, 5821 flow [2024-06-14 11:57:21,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5653, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5821, PETRI_PLACES=433, PETRI_TRANSITIONS=558} [2024-06-14 11:57:21,502 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 387 predicate places. [2024-06-14 11:57:21,502 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 558 transitions, 5821 flow [2024-06-14 11:57:21,502 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) [2024-06-14 11:57:21,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:21,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:21,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:57:21,502 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)] === [2024-06-14 11:57:21,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1644896738, now seen corresponding path program 6 times [2024-06-14 11:57:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600138795] [2024-06-14 11:57:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600138795] [2024-06-14 11:57:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600138795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:22,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:57:22,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144268870] [2024-06-14 11:57:22,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:57:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:57:22,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:57:22,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:57:22,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 558 transitions, 5821 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) [2024-06-14 11:57:22,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:22,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:57:22,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:24,541 INFO L124 PetriNetUnfolderBase]: 4500/7114 cut-off events. [2024-06-14 11:57:24,541 INFO L125 PetriNetUnfolderBase]: For 3193043/3193046 co-relation queries the response was YES. [2024-06-14 11:57:24,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94838 conditions, 7114 events. 4500/7114 cut-off events. For 3193043/3193046 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 43458 event pairs, 792 based on Foata normal form. 3/7113 useless extension candidates. Maximal degree in co-relation 94632. Up to 6655 conditions per place. [2024-06-14 11:57:24,675 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 512 selfloop transitions, 62 changer transitions 0/579 dead transitions. [2024-06-14 11:57:24,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 579 transitions, 7467 flow [2024-06-14 11:57:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:57:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:57:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 11:57:24,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 11:57:24,676 INFO L175 Difference]: Start difference. First operand has 433 places, 558 transitions, 5821 flow. Second operand 8 states and 150 transitions. [2024-06-14 11:57:24,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 579 transitions, 7467 flow [2024-06-14 11:57:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 579 transitions, 7327 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-14 11:57:30,764 INFO L231 Difference]: Finished difference. Result has 435 places, 561 transitions, 5949 flow [2024-06-14 11:57:30,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5681, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5949, PETRI_PLACES=435, PETRI_TRANSITIONS=561} [2024-06-14 11:57:30,764 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 389 predicate places. [2024-06-14 11:57:30,764 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 561 transitions, 5949 flow [2024-06-14 11:57:30,765 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) [2024-06-14 11:57:30,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:30,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:30,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:57:30,765 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:57:30,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2119445398, now seen corresponding path program 11 times [2024-06-14 11:57:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226868222] [2024-06-14 11:57:30,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:30,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:31,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:31,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226868222] [2024-06-14 11:57:31,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226868222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:31,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:31,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:31,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058597618] [2024-06-14 11:57:31,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:31,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:32,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:57:32,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 561 transitions, 5949 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) [2024-06-14 11:57:32,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:32,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:57:32,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:34,664 INFO L124 PetriNetUnfolderBase]: 4575/7229 cut-off events. [2024-06-14 11:57:34,664 INFO L125 PetriNetUnfolderBase]: For 3418922/3418925 co-relation queries the response was YES. [2024-06-14 11:57:34,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96812 conditions, 7229 events. 4575/7229 cut-off events. For 3418922/3418925 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 44287 event pairs, 752 based on Foata normal form. 20/7245 useless extension candidates. Maximal degree in co-relation 96605. Up to 5809 conditions per place. [2024-06-14 11:57:34,789 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 441 selfloop transitions, 163 changer transitions 0/609 dead transitions. [2024-06-14 11:57:34,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 609 transitions, 7537 flow [2024-06-14 11:57:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-06-14 11:57:34,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45656565656565656 [2024-06-14 11:57:34,791 INFO L175 Difference]: Start difference. First operand has 435 places, 561 transitions, 5949 flow. Second operand 11 states and 226 transitions. [2024-06-14 11:57:34,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 609 transitions, 7537 flow [2024-06-14 11:57:43,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 609 transitions, 7325 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-14 11:57:43,206 INFO L231 Difference]: Finished difference. Result has 441 places, 562 transitions, 6182 flow [2024-06-14 11:57:43,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6182, PETRI_PLACES=441, PETRI_TRANSITIONS=562} [2024-06-14 11:57:43,207 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 395 predicate places. [2024-06-14 11:57:43,207 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 562 transitions, 6182 flow [2024-06-14 11:57:43,207 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) [2024-06-14 11:57:43,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:43,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:43,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:57:43,207 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:57:43,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1939967132, now seen corresponding path program 12 times [2024-06-14 11:57:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204304100] [2024-06-14 11:57:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:44,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:44,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204304100] [2024-06-14 11:57:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204304100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:44,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:44,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863173637] [2024-06-14 11:57:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:44,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:44,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:57:44,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 562 transitions, 6182 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) [2024-06-14 11:57:44,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:44,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:57:44,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:47,036 INFO L124 PetriNetUnfolderBase]: 4650/7354 cut-off events. [2024-06-14 11:57:47,036 INFO L125 PetriNetUnfolderBase]: For 3493974/3493977 co-relation queries the response was YES. [2024-06-14 11:57:47,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99328 conditions, 7354 events. 4650/7354 cut-off events. For 3493974/3493977 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 45299 event pairs, 752 based on Foata normal form. 20/7370 useless extension candidates. Maximal degree in co-relation 99120. Up to 5934 conditions per place. [2024-06-14 11:57:47,176 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 445 selfloop transitions, 161 changer transitions 0/611 dead transitions. [2024-06-14 11:57:47,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 611 transitions, 7798 flow [2024-06-14 11:57:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-14 11:57:47,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2024-06-14 11:57:47,178 INFO L175 Difference]: Start difference. First operand has 441 places, 562 transitions, 6182 flow. Second operand 11 states and 228 transitions. [2024-06-14 11:57:47,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 611 transitions, 7798 flow [2024-06-14 11:57:54,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 611 transitions, 7385 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-14 11:57:54,091 INFO L231 Difference]: Finished difference. Result has 443 places, 563 transitions, 6212 flow [2024-06-14 11:57:54,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5769, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6212, PETRI_PLACES=443, PETRI_TRANSITIONS=563} [2024-06-14 11:57:54,092 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 397 predicate places. [2024-06-14 11:57:54,092 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 563 transitions, 6212 flow [2024-06-14 11:57:54,092 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) [2024-06-14 11:57:54,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:57:54,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:57:54,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:57:54,092 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:57:54,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:57:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -400507046, now seen corresponding path program 13 times [2024-06-14 11:57:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:57:54,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914011991] [2024-06-14 11:57:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:57:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:57:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:57:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:57:55,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:57:55,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914011991] [2024-06-14 11:57:55,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914011991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:57:55,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:57:55,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:57:55,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689861143] [2024-06-14 11:57:55,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:57:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:57:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:57:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:57:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:57:55,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:57:55,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 563 transitions, 6212 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) [2024-06-14 11:57:55,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:57:55,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:57:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:57:58,287 INFO L124 PetriNetUnfolderBase]: 4725/7474 cut-off events. [2024-06-14 11:57:58,287 INFO L125 PetriNetUnfolderBase]: For 3542850/3542853 co-relation queries the response was YES. [2024-06-14 11:57:58,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100524 conditions, 7474 events. 4725/7474 cut-off events. For 3542850/3542853 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 46249 event pairs, 772 based on Foata normal form. 20/7490 useless extension candidates. Maximal degree in co-relation 100315. Up to 6059 conditions per place. [2024-06-14 11:57:58,415 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 452 selfloop transitions, 156 changer transitions 0/613 dead transitions. [2024-06-14 11:57:58,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 613 transitions, 7856 flow [2024-06-14 11:57:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:57:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:57:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-14 11:57:58,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-14 11:57:58,417 INFO L175 Difference]: Start difference. First operand has 443 places, 563 transitions, 6212 flow. Second operand 11 states and 230 transitions. [2024-06-14 11:57:58,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 613 transitions, 7856 flow [2024-06-14 11:58:04,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 613 transitions, 7445 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:04,019 INFO L231 Difference]: Finished difference. Result has 445 places, 564 transitions, 6236 flow [2024-06-14 11:58:04,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5801, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6236, PETRI_PLACES=445, PETRI_TRANSITIONS=564} [2024-06-14 11:58:04,020 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 399 predicate places. [2024-06-14 11:58:04,020 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 564 transitions, 6236 flow [2024-06-14 11:58:04,020 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) [2024-06-14 11:58:04,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:04,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:04,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:58:04,020 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:58:04,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash -594446456, now seen corresponding path program 14 times [2024-06-14 11:58:04,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:04,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64716723] [2024-06-14 11:58:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:04,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:05,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:05,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64716723] [2024-06-14 11:58:05,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64716723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:05,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:05,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:05,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698956167] [2024-06-14 11:58:05,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:05,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:05,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:05,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:58:05,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 564 transitions, 6236 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) [2024-06-14 11:58:05,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:05,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:58:05,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:07,985 INFO L124 PetriNetUnfolderBase]: 4800/7614 cut-off events. [2024-06-14 11:58:07,986 INFO L125 PetriNetUnfolderBase]: For 3591114/3591117 co-relation queries the response was YES. [2024-06-14 11:58:08,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101705 conditions, 7614 events. 4800/7614 cut-off events. For 3591114/3591117 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47500 event pairs, 791 based on Foata normal form. 20/7630 useless extension candidates. Maximal degree in co-relation 101495. Up to 6184 conditions per place. [2024-06-14 11:58:08,138 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 449 selfloop transitions, 159 changer transitions 0/613 dead transitions. [2024-06-14 11:58:08,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 613 transitions, 7860 flow [2024-06-14 11:58:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-14 11:58:08,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626262626262626 [2024-06-14 11:58:08,139 INFO L175 Difference]: Start difference. First operand has 445 places, 564 transitions, 6236 flow. Second operand 11 states and 229 transitions. [2024-06-14 11:58:08,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 613 transitions, 7860 flow [2024-06-14 11:58:14,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 613 transitions, 7457 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:14,317 INFO L231 Difference]: Finished difference. Result has 447 places, 565 transitions, 6276 flow [2024-06-14 11:58:14,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6276, PETRI_PLACES=447, PETRI_TRANSITIONS=565} [2024-06-14 11:58:14,318 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 401 predicate places. [2024-06-14 11:58:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 565 transitions, 6276 flow [2024-06-14 11:58:14,318 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) [2024-06-14 11:58:14,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:14,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:58:14,318 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:58:14,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -599956706, now seen corresponding path program 15 times [2024-06-14 11:58:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420219060] [2024-06-14 11:58:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:15,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420219060] [2024-06-14 11:58:15,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420219060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:15,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:15,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:15,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746961006] [2024-06-14 11:58:15,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:15,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:15,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:15,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:15,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:15,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:58:15,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 565 transitions, 6276 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) [2024-06-14 11:58:15,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:15,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:58:15,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:18,281 INFO L124 PetriNetUnfolderBase]: 4858/7712 cut-off events. [2024-06-14 11:58:18,281 INFO L125 PetriNetUnfolderBase]: For 3596817/3596820 co-relation queries the response was YES. [2024-06-14 11:58:18,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102521 conditions, 7712 events. 4858/7712 cut-off events. For 3596817/3596820 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 48266 event pairs, 772 based on Foata normal form. 16/7724 useless extension candidates. Maximal degree in co-relation 102310. Up to 5812 conditions per place. [2024-06-14 11:58:18,427 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 446 selfloop transitions, 166 changer transitions 0/617 dead transitions. [2024-06-14 11:58:18,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 617 transitions, 7950 flow [2024-06-14 11:58:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-14 11:58:18,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-14 11:58:18,429 INFO L175 Difference]: Start difference. First operand has 447 places, 565 transitions, 6276 flow. Second operand 11 states and 230 transitions. [2024-06-14 11:58:18,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 617 transitions, 7950 flow [2024-06-14 11:58:24,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 617 transitions, 7539 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:24,980 INFO L231 Difference]: Finished difference. Result has 449 places, 566 transitions, 6323 flow [2024-06-14 11:58:24,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5865, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6323, PETRI_PLACES=449, PETRI_TRANSITIONS=566} [2024-06-14 11:58:24,980 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 403 predicate places. [2024-06-14 11:58:24,980 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 566 transitions, 6323 flow [2024-06-14 11:58:24,981 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) [2024-06-14 11:58:24,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:24,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:24,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:58:24,981 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:58:24,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1862729407, now seen corresponding path program 6 times [2024-06-14 11:58:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484904963] [2024-06-14 11:58:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:26,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484904963] [2024-06-14 11:58:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484904963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:26,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:26,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:26,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508423782] [2024-06-14 11:58:26,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:26,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:26,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:26,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:26,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:26,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:58:26,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 566 transitions, 6323 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) [2024-06-14 11:58:26,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:26,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:58:26,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:29,563 INFO L124 PetriNetUnfolderBase]: 4886/7765 cut-off events. [2024-06-14 11:58:29,564 INFO L125 PetriNetUnfolderBase]: For 3510703/3510706 co-relation queries the response was YES. [2024-06-14 11:58:29,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102456 conditions, 7765 events. 4886/7765 cut-off events. For 3510703/3510706 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 48808 event pairs, 855 based on Foata normal form. 4/7765 useless extension candidates. Maximal degree in co-relation 102244. Up to 6808 conditions per place. [2024-06-14 11:58:29,973 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 479 selfloop transitions, 134 changer transitions 0/618 dead transitions. [2024-06-14 11:58:29,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 618 transitions, 7908 flow [2024-06-14 11:58:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-14 11:58:29,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404040404040404 [2024-06-14 11:58:29,974 INFO L175 Difference]: Start difference. First operand has 449 places, 566 transitions, 6323 flow. Second operand 11 states and 218 transitions. [2024-06-14 11:58:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 618 transitions, 7908 flow [2024-06-14 11:58:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 618 transitions, 7456 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-14 11:58:36,599 INFO L231 Difference]: Finished difference. Result has 452 places, 578 transitions, 6421 flow [2024-06-14 11:58:36,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5889, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6421, PETRI_PLACES=452, PETRI_TRANSITIONS=578} [2024-06-14 11:58:36,600 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 406 predicate places. [2024-06-14 11:58:36,600 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 578 transitions, 6421 flow [2024-06-14 11:58:36,600 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) [2024-06-14 11:58:36,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:36,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:36,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:58:36,600 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:58:36,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2121147101, now seen corresponding path program 7 times [2024-06-14 11:58:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:36,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421823317] [2024-06-14 11:58:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:36,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:37,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:37,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421823317] [2024-06-14 11:58:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421823317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:37,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:37,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:37,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509182399] [2024-06-14 11:58:37,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:38,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:58:38,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 578 transitions, 6421 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) [2024-06-14 11:58:38,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:38,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:58:38,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:40,611 INFO L124 PetriNetUnfolderBase]: 4903/7792 cut-off events. [2024-06-14 11:58:40,611 INFO L125 PetriNetUnfolderBase]: For 3537706/3537709 co-relation queries the response was YES. [2024-06-14 11:58:40,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102659 conditions, 7792 events. 4903/7792 cut-off events. For 3537706/3537709 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 49028 event pairs, 855 based on Foata normal form. 4/7792 useless extension candidates. Maximal degree in co-relation 102445. Up to 6835 conditions per place. [2024-06-14 11:58:40,757 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 487 selfloop transitions, 129 changer transitions 0/621 dead transitions. [2024-06-14 11:58:40,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 621 transitions, 7940 flow [2024-06-14 11:58:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-14 11:58:40,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:58:40,758 INFO L175 Difference]: Start difference. First operand has 452 places, 578 transitions, 6421 flow. Second operand 11 states and 220 transitions. [2024-06-14 11:58:40,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 621 transitions, 7940 flow [2024-06-14 11:58:50,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 621 transitions, 7579 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-14 11:58:50,188 INFO L231 Difference]: Finished difference. Result has 458 places, 581 transitions, 6502 flow [2024-06-14 11:58:50,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6078, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6502, PETRI_PLACES=458, PETRI_TRANSITIONS=581} [2024-06-14 11:58:50,188 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 412 predicate places. [2024-06-14 11:58:50,189 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 581 transitions, 6502 flow [2024-06-14 11:58:50,189 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) [2024-06-14 11:58:50,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:58:50,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:58:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 11:58:50,189 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:58:50,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:58:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash 427695891, now seen corresponding path program 8 times [2024-06-14 11:58:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:58:50,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121511397] [2024-06-14 11:58:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:58:50,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:58:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:58:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:58:51,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:58:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121511397] [2024-06-14 11:58:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121511397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:58:51,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:58:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:58:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269628752] [2024-06-14 11:58:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:58:51,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:58:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:58:51,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:58:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:58:51,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:58:51,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 581 transitions, 6502 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) [2024-06-14 11:58:51,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:58:51,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:58:51,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:58:54,676 INFO L124 PetriNetUnfolderBase]: 4931/7850 cut-off events. [2024-06-14 11:58:54,676 INFO L125 PetriNetUnfolderBase]: For 3577825/3577828 co-relation queries the response was YES. [2024-06-14 11:58:54,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102859 conditions, 7850 events. 4931/7850 cut-off events. For 3577825/3577828 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49596 event pairs, 860 based on Foata normal form. 4/7850 useless extension candidates. Maximal degree in co-relation 102643. Up to 6874 conditions per place. [2024-06-14 11:58:54,818 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 490 selfloop transitions, 132 changer transitions 0/627 dead transitions. [2024-06-14 11:58:54,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 627 transitions, 8051 flow [2024-06-14 11:58:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:58:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:58:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-14 11:58:54,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:58:54,819 INFO L175 Difference]: Start difference. First operand has 458 places, 581 transitions, 6502 flow. Second operand 11 states and 220 transitions. [2024-06-14 11:58:54,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 627 transitions, 8051 flow [2024-06-14 11:59:02,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 627 transitions, 7652 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-14 11:59:02,941 INFO L231 Difference]: Finished difference. Result has 462 places, 587 transitions, 6577 flow [2024-06-14 11:59:02,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6577, PETRI_PLACES=462, PETRI_TRANSITIONS=587} [2024-06-14 11:59:02,941 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 416 predicate places. [2024-06-14 11:59:02,942 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 587 transitions, 6577 flow [2024-06-14 11:59:02,942 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) [2024-06-14 11:59:02,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:02,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:02,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 11:59:02,942 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:59:02,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2111811307, now seen corresponding path program 9 times [2024-06-14 11:59:02,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:02,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355577533] [2024-06-14 11:59:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:04,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:04,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355577533] [2024-06-14 11:59:04,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355577533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:04,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:04,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133501906] [2024-06-14 11:59:04,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:04,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:04,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:04,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:04,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:59:04,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 587 transitions, 6577 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) [2024-06-14 11:59:04,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:04,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:59:04,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:07,338 INFO L124 PetriNetUnfolderBase]: 4973/7916 cut-off events. [2024-06-14 11:59:07,338 INFO L125 PetriNetUnfolderBase]: For 3669280/3669283 co-relation queries the response was YES. [2024-06-14 11:59:07,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104570 conditions, 7916 events. 4973/7916 cut-off events. For 3669280/3669283 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 50070 event pairs, 862 based on Foata normal form. 4/7916 useless extension candidates. Maximal degree in co-relation 104352. Up to 6875 conditions per place. [2024-06-14 11:59:07,570 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 492 selfloop transitions, 137 changer transitions 0/634 dead transitions. [2024-06-14 11:59:07,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 634 transitions, 8801 flow [2024-06-14 11:59:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-14 11:59:07,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505050505050505 [2024-06-14 11:59:07,571 INFO L175 Difference]: Start difference. First operand has 462 places, 587 transitions, 6577 flow. Second operand 11 states and 223 transitions. [2024-06-14 11:59:07,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 634 transitions, 8801 flow [2024-06-14 11:59:15,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 634 transitions, 8420 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-14 11:59:15,746 INFO L231 Difference]: Finished difference. Result has 467 places, 591 transitions, 6777 flow [2024-06-14 11:59:15,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6196, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6777, PETRI_PLACES=467, PETRI_TRANSITIONS=591} [2024-06-14 11:59:15,746 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 421 predicate places. [2024-06-14 11:59:15,746 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 591 transitions, 6777 flow [2024-06-14 11:59:15,746 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) [2024-06-14 11:59:15,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:15,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:15,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 11:59:15,747 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:59:15,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2119229917, now seen corresponding path program 10 times [2024-06-14 11:59:15,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:15,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534826873] [2024-06-14 11:59:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:17,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:17,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534826873] [2024-06-14 11:59:17,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534826873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:17,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:17,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746048921] [2024-06-14 11:59:17,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:17,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:17,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:59:17,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 591 transitions, 6777 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) [2024-06-14 11:59:17,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:17,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:59:17,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:20,294 INFO L124 PetriNetUnfolderBase]: 4965/7914 cut-off events. [2024-06-14 11:59:20,294 INFO L125 PetriNetUnfolderBase]: For 3667782/3667785 co-relation queries the response was YES. [2024-06-14 11:59:20,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104014 conditions, 7914 events. 4965/7914 cut-off events. For 3667782/3667785 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 50124 event pairs, 870 based on Foata normal form. 4/7914 useless extension candidates. Maximal degree in co-relation 103795. Up to 6928 conditions per place. [2024-06-14 11:59:20,448 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 493 selfloop transitions, 133 changer transitions 0/631 dead transitions. [2024-06-14 11:59:20,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 631 transitions, 8149 flow [2024-06-14 11:59:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-14 11:59:20,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-14 11:59:20,450 INFO L175 Difference]: Start difference. First operand has 467 places, 591 transitions, 6777 flow. Second operand 11 states and 219 transitions. [2024-06-14 11:59:20,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 631 transitions, 8149 flow [2024-06-14 11:59:30,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 631 transitions, 7720 flow, removed 141 selfloop flow, removed 7 redundant places. [2024-06-14 11:59:30,120 INFO L231 Difference]: Finished difference. Result has 471 places, 591 transitions, 6621 flow [2024-06-14 11:59:30,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6348, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6621, PETRI_PLACES=471, PETRI_TRANSITIONS=591} [2024-06-14 11:59:30,121 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 425 predicate places. [2024-06-14 11:59:30,121 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 591 transitions, 6621 flow [2024-06-14 11:59:30,121 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) [2024-06-14 11:59:30,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:30,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 11:59:30,121 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:59:30,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:30,121 INFO L85 PathProgramCache]: Analyzing trace with hash -400291565, now seen corresponding path program 11 times [2024-06-14 11:59:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016747320] [2024-06-14 11:59:30,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:30,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016747320] [2024-06-14 11:59:31,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016747320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:31,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:31,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335409027] [2024-06-14 11:59:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:31,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:31,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:59:31,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 591 transitions, 6621 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) [2024-06-14 11:59:31,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:31,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:59:31,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:34,806 INFO L124 PetriNetUnfolderBase]: 4993/7947 cut-off events. [2024-06-14 11:59:34,806 INFO L125 PetriNetUnfolderBase]: For 3701845/3701848 co-relation queries the response was YES. [2024-06-14 11:59:34,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104553 conditions, 7947 events. 4993/7947 cut-off events. For 3701845/3701848 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50274 event pairs, 865 based on Foata normal form. 4/7947 useless extension candidates. Maximal degree in co-relation 104332. Up to 6967 conditions per place. [2024-06-14 11:59:34,948 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 499 selfloop transitions, 132 changer transitions 0/636 dead transitions. [2024-06-14 11:59:34,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 636 transitions, 8188 flow [2024-06-14 11:59:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:34,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-14 11:59:34,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-06-14 11:59:34,950 INFO L175 Difference]: Start difference. First operand has 471 places, 591 transitions, 6621 flow. Second operand 11 states and 222 transitions. [2024-06-14 11:59:34,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 636 transitions, 8188 flow [2024-06-14 11:59:42,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 636 transitions, 7896 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:59:42,882 INFO L231 Difference]: Finished difference. Result has 472 places, 596 transitions, 6789 flow [2024-06-14 11:59:42,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6789, PETRI_PLACES=472, PETRI_TRANSITIONS=596} [2024-06-14 11:59:42,883 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 426 predicate places. [2024-06-14 11:59:42,883 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 596 transitions, 6789 flow [2024-06-14 11:59:42,883 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) [2024-06-14 11:59:42,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:42,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:42,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 11:59:42,883 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:59:42,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1862460637, now seen corresponding path program 12 times [2024-06-14 11:59:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:42,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114784710] [2024-06-14 11:59:42,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:42,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:44,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:44,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114784710] [2024-06-14 11:59:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114784710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:44,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674069009] [2024-06-14 11:59:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:44,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:44,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:59:44,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 596 transitions, 6789 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) [2024-06-14 11:59:44,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:44,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:59:44,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:59:47,314 INFO L124 PetriNetUnfolderBase]: 5010/7994 cut-off events. [2024-06-14 11:59:47,314 INFO L125 PetriNetUnfolderBase]: For 3755572/3755575 co-relation queries the response was YES. [2024-06-14 11:59:47,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105392 conditions, 7994 events. 5010/7994 cut-off events. For 3755572/3755575 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 50830 event pairs, 880 based on Foata normal form. 4/7994 useless extension candidates. Maximal degree in co-relation 105170. Up to 6953 conditions per place. [2024-06-14 11:59:47,461 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 489 selfloop transitions, 145 changer transitions 0/639 dead transitions. [2024-06-14 11:59:47,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 639 transitions, 8335 flow [2024-06-14 11:59:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:59:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:59:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-14 11:59:47,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:59:47,462 INFO L175 Difference]: Start difference. First operand has 472 places, 596 transitions, 6789 flow. Second operand 11 states and 220 transitions. [2024-06-14 11:59:47,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 639 transitions, 8335 flow [2024-06-14 11:59:55,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 639 transitions, 7890 flow, removed 78 selfloop flow, removed 11 redundant places. [2024-06-14 11:59:55,864 INFO L231 Difference]: Finished difference. Result has 472 places, 598 transitions, 6801 flow [2024-06-14 11:59:55,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6344, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6801, PETRI_PLACES=472, PETRI_TRANSITIONS=598} [2024-06-14 11:59:55,864 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 426 predicate places. [2024-06-14 11:59:55,864 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 598 transitions, 6801 flow [2024-06-14 11:59:55,864 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) [2024-06-14 11:59:55,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:59:55,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:59:55,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 11:59:55,864 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:59:55,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:59:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash -393141725, now seen corresponding path program 13 times [2024-06-14 11:59:55,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:59:55,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426958411] [2024-06-14 11:59:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:59:55,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:59:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:59:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:59:57,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:59:57,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426958411] [2024-06-14 11:59:57,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426958411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:59:57,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:59:57,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:59:57,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793291409] [2024-06-14 11:59:57,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:59:57,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:59:57,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:59:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:59:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:59:57,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 11:59:57,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 598 transitions, 6801 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) [2024-06-14 11:59:57,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:59:57,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 11:59:57,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:00,533 INFO L124 PetriNetUnfolderBase]: 5027/8001 cut-off events. [2024-06-14 12:00:00,533 INFO L125 PetriNetUnfolderBase]: For 3801266/3801269 co-relation queries the response was YES. [2024-06-14 12:00:00,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105868 conditions, 8001 events. 5027/8001 cut-off events. For 3801266/3801269 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 50733 event pairs, 870 based on Foata normal form. 4/8001 useless extension candidates. Maximal degree in co-relation 105648. Up to 7021 conditions per place. [2024-06-14 12:00:00,677 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 502 selfloop transitions, 133 changer transitions 0/640 dead transitions. [2024-06-14 12:00:00,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 640 transitions, 8351 flow [2024-06-14 12:00:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-14 12:00:00,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44646464646464645 [2024-06-14 12:00:00,678 INFO L175 Difference]: Start difference. First operand has 472 places, 598 transitions, 6801 flow. Second operand 11 states and 221 transitions. [2024-06-14 12:00:00,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 640 transitions, 8351 flow [2024-06-14 12:00:11,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 640 transitions, 7912 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-14 12:00:11,260 INFO L231 Difference]: Finished difference. Result has 474 places, 600 transitions, 6799 flow [2024-06-14 12:00:11,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6362, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6799, PETRI_PLACES=474, PETRI_TRANSITIONS=600} [2024-06-14 12:00:11,260 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 428 predicate places. [2024-06-14 12:00:11,260 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 600 transitions, 6799 flow [2024-06-14 12:00:11,260 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) [2024-06-14 12:00:11,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:00:11,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:00:11,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 12:00:11,260 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 12:00:11,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:00:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1853206207, now seen corresponding path program 14 times [2024-06-14 12:00:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:00:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833975943] [2024-06-14 12:00:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:00:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:00:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:00:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:00:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:00:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833975943] [2024-06-14 12:00:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833975943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:00:12,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:00:12,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:00:12,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647335821] [2024-06-14 12:00:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:00:12,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:00:12,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:00:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:00:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:00:12,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-14 12:00:12,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 600 transitions, 6799 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) [2024-06-14 12:00:12,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:00:12,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-14 12:00:12,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:00:16,426 INFO L124 PetriNetUnfolderBase]: 5069/8062 cut-off events. [2024-06-14 12:00:16,426 INFO L125 PetriNetUnfolderBase]: For 3902210/3902213 co-relation queries the response was YES. [2024-06-14 12:00:16,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107572 conditions, 8062 events. 5069/8062 cut-off events. For 3902210/3902213 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 51151 event pairs, 856 based on Foata normal form. 4/8062 useless extension candidates. Maximal degree in co-relation 107351. Up to 6691 conditions per place. [2024-06-14 12:00:16,610 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 467 selfloop transitions, 176 changer transitions 0/648 dead transitions. [2024-06-14 12:00:16,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 648 transitions, 9105 flow [2024-06-14 12:00:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:00:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:00:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-14 12:00:16,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-06-14 12:00:16,611 INFO L175 Difference]: Start difference. First operand has 474 places, 600 transitions, 6799 flow. Second operand 11 states and 222 transitions. [2024-06-14 12:00:16,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 648 transitions, 9105 flow Killed by 15