./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:41:27,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:41:27,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:41:27,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:41:27,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:41:27,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:41:27,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:41:27,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:41:27,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:41:27,495 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:41:27,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:41:27,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:41:27,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:41:27,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:41:27,500 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:41:27,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:41:27,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:41:27,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:41:27,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:41:27,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:41:27,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:41:27,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:41:27,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:41:27,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:41:27,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:41:27,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:41:27,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:41:27,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:41:27,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:41:27,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:41:27,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:41:27,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:41:27,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:41:27,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:41:27,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:41:27,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:41:27,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:41:27,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:41:27,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:41:27,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:41:27,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:41:27,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:41:27,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:41:27,506 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:41:27,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:41:27,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:41:27,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:41:27,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:41:27,752 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:41:27,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 15:41:28,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:41:28,930 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:41:28,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 15:41:28,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43347c52a/9c45982589df4ac1b061c2db413fdfbf/FLAG27b755bb6 [2024-06-04 15:41:28,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43347c52a/9c45982589df4ac1b061c2db413fdfbf [2024-06-04 15:41:28,989 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:41:28,990 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:41:28,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-04 15:41:29,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:41:29,133 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:41:29,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:41:29,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:41:29,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:41:29,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:41:28" (1/2) ... [2024-06-04 15:41:29,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5df0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:29, skipping insertion in model container [2024-06-04 15:41:29,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:41:28" (1/2) ... [2024-06-04 15:41:29,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3491d62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:41:29, skipping insertion in model container [2024-06-04 15:41:29,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:41:29" (2/2) ... [2024-06-04 15:41:29,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5df0c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29, skipping insertion in model container [2024-06-04 15:41:29,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:41:29" (2/2) ... [2024-06-04 15:41:29,142 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:41:29,204 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:41:29,206 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1))) [2024-06-04 15:41:29,207 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1))) [2024-06-04 15:41:29,207 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1))) [2024-06-04 15:41:29,207 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:41:29,207 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-04 15:41:29,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:41:29,511 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:41:29,518 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:41:29,596 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:41:29,629 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:41:29,629 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29 WrapperNode [2024-06-04 15:41:29,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:41:29,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:41:29,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:41:29,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:41:29,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,695 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 126 [2024-06-04 15:41:29,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:41:29,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:41:29,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:41:29,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:41:29,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,737 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 15:41:29,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:41:29,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:41:29,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:41:29,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:41:29,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (1/1) ... [2024-06-04 15:41:29,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:41:29,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:41:29,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 15:41:29,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 15:41:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:41:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:41:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:41:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:41:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:41:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:41:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:41:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:41:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:41:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:41:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:41:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:41:29,823 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:41:29,924 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:41:29,929 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:41:30,208 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:41:30,209 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:41:30,372 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:41:30,373 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:41:30,373 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:41:30 BoogieIcfgContainer [2024-06-04 15:41:30,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:41:30,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:41:30,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:41:30,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:41:30,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:41:28" (1/4) ... [2024-06-04 15:41:30,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2324e6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:41:30, skipping insertion in model container [2024-06-04 15:41:30,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:41:29" (2/4) ... [2024-06-04 15:41:30,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2324e6d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:41:30, skipping insertion in model container [2024-06-04 15:41:30,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:41:29" (3/4) ... [2024-06-04 15:41:30,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2324e6d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:41:30, skipping insertion in model container [2024-06-04 15:41:30,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:41:30" (4/4) ... [2024-06-04 15:41:30,381 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-04 15:41:30,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:41:30,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 15:41:30,395 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:41:30,438 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:41:30,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-04 15:41:30,493 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-04 15:41:30,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:41:30,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:41:30,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-04 15:41:30,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-04 15:41:30,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:41:30,517 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;@135aba5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:41:30,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 15:41:30,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:41:30,524 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:41:30,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:41:30,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:30,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:41:30,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:30,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1623706950, now seen corresponding path program 1 times [2024-06-04 15:41:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:30,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260496043] [2024-06-04 15:41:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:30,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:31,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260496043] [2024-06-04 15:41:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260496043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:31,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:31,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:41:31,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634806249] [2024-06-04 15:41:31,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:41:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:31,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:41:31,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:41:31,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-04 15:41:31,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:31,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:31,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-04 15:41:31,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:31,826 INFO L124 PetriNetUnfolderBase]: 942/1466 cut-off events. [2024-06-04 15:41:31,827 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-04 15:41:31,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 1466 events. 942/1466 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7280 event pairs, 546 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 2969. Up to 1428 conditions per place. [2024-06-04 15:41:31,841 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-04 15:41:31,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 177 flow [2024-06-04 15:41:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:41:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:41:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-04 15:41:31,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-06-04 15:41:31,853 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 79 transitions. [2024-06-04 15:41:31,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 177 flow [2024-06-04 15:41:31,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:31,858 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-04 15:41:31,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-04 15:41:31,862 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-04 15:41:31,863 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-04 15:41:31,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:31,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:31,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:31,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:41:31,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:31,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:31,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1309217895, now seen corresponding path program 1 times [2024-06-04 15:41:31,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:31,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145927747] [2024-06-04 15:41:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:31,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:32,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145927747] [2024-06-04 15:41:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145927747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:32,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:41:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580152397] [2024-06-04 15:41:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:32,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:41:32,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:41:32,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:41:32,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-04 15:41:32,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:32,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:32,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-04 15:41:32,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:32,688 INFO L124 PetriNetUnfolderBase]: 1134/1736 cut-off events. [2024-06-04 15:41:32,688 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2024-06-04 15:41:32,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4015 conditions, 1736 events. 1134/1736 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8267 event pairs, 590 based on Foata normal form. 6/1740 useless extension candidates. Maximal degree in co-relation 4000. Up to 1676 conditions per place. [2024-06-04 15:41:32,695 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 44 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-04 15:41:32,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 262 flow [2024-06-04 15:41:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:41:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:41:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-04 15:41:32,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-04 15:41:32,697 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 99 transitions. [2024-06-04 15:41:32,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 262 flow [2024-06-04 15:41:32,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:41:32,698 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 154 flow [2024-06-04 15:41:32,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-04 15:41:32,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-04 15:41:32,699 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 154 flow [2024-06-04 15:41:32,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:32,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:32,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:32,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:41:32,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:32,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash -895031745, now seen corresponding path program 1 times [2024-06-04 15:41:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:32,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733215828] [2024-06-04 15:41:32,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:32,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:33,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:33,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733215828] [2024-06-04 15:41:33,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733215828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:41:33,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269670506] [2024-06-04 15:41:33,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:33,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:41:33,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:41:33,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:41:33,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-04 15:41:33,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:33,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:33,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-04 15:41:33,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:33,751 INFO L124 PetriNetUnfolderBase]: 980/1529 cut-off events. [2024-06-04 15:41:33,751 INFO L125 PetriNetUnfolderBase]: For 738/740 co-relation queries the response was YES. [2024-06-04 15:41:33,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 1529 events. 980/1529 cut-off events. For 738/740 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7468 event pairs, 562 based on Foata normal form. 3/1488 useless extension candidates. Maximal degree in co-relation 3895. Up to 1473 conditions per place. [2024-06-04 15:41:33,759 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 41 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-04 15:41:33,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 310 flow [2024-06-04 15:41:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:41:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:41:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-04 15:41:33,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-04 15:41:33,764 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 154 flow. Second operand 5 states and 106 transitions. [2024-06-04 15:41:33,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 310 flow [2024-06-04 15:41:33,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 308 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-04 15:41:33,767 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 223 flow [2024-06-04 15:41:33,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-06-04 15:41:33,768 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-04 15:41:33,768 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 223 flow [2024-06-04 15:41:33,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:33,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:33,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:33,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:41:33,768 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)] === [2024-06-04 15:41:33,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1057930921, now seen corresponding path program 1 times [2024-06-04 15:41:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:33,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095488140] [2024-06-04 15:41:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:33,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:34,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:34,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095488140] [2024-06-04 15:41:34,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095488140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:34,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:34,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:41:34,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601367349] [2024-06-04 15:41:34,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:34,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:41:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:41:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:41:34,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-04 15:41:34,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:34,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:34,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-04 15:41:34,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:35,029 INFO L124 PetriNetUnfolderBase]: 1122/1717 cut-off events. [2024-06-04 15:41:35,029 INFO L125 PetriNetUnfolderBase]: For 1602/1610 co-relation queries the response was YES. [2024-06-04 15:41:35,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 1717 events. 1122/1717 cut-off events. For 1602/1610 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8159 event pairs, 380 based on Foata normal form. 12/1727 useless extension candidates. Maximal degree in co-relation 5009. Up to 1627 conditions per place. [2024-06-04 15:41:35,039 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 60 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-04 15:41:35,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 449 flow [2024-06-04 15:41:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-04 15:41:35,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-04 15:41:35,041 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 223 flow. Second operand 6 states and 138 transitions. [2024-06-04 15:41:35,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 449 flow [2024-06-04 15:41:35,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 436 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:35,044 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 267 flow [2024-06-04 15:41:35,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-04 15:41:35,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-04 15:41:35,045 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 267 flow [2024-06-04 15:41:35,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:35,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:35,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:35,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:41:35,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:35,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1976179622, now seen corresponding path program 1 times [2024-06-04 15:41:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406599907] [2024-06-04 15:41:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:35,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:35,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406599907] [2024-06-04 15:41:35,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406599907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:35,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:35,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:41:35,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138874860] [2024-06-04 15:41:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:35,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:41:35,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:35,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:41:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:41:35,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:41:35,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:35,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:35,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:41:35,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:35,995 INFO L124 PetriNetUnfolderBase]: 1182/1836 cut-off events. [2024-06-04 15:41:35,995 INFO L125 PetriNetUnfolderBase]: For 2974/2978 co-relation queries the response was YES. [2024-06-04 15:41:35,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5776 conditions, 1836 events. 1182/1836 cut-off events. For 2974/2978 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8986 event pairs, 517 based on Foata normal form. 2/1815 useless extension candidates. Maximal degree in co-relation 5751. Up to 1727 conditions per place. [2024-06-04 15:41:36,006 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 55 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-04 15:41:36,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 485 flow [2024-06-04 15:41:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-04 15:41:36,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-04 15:41:36,008 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 267 flow. Second operand 6 states and 118 transitions. [2024-06-04 15:41:36,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 485 flow [2024-06-04 15:41:36,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 456 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:36,011 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 338 flow [2024-06-04 15:41:36,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-04 15:41:36,012 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-04 15:41:36,012 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 338 flow [2024-06-04 15:41:36,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:36,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:36,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:41:36,013 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:36,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1138700578, now seen corresponding path program 1 times [2024-06-04 15:41:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126600475] [2024-06-04 15:41:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126600475] [2024-06-04 15:41:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126600475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:36,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:36,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:41:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381809328] [2024-06-04 15:41:36,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:36,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:41:36,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:36,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:41:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:41:36,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:41:36,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:36,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:36,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:41:36,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:37,117 INFO L124 PetriNetUnfolderBase]: 1263/1942 cut-off events. [2024-06-04 15:41:37,118 INFO L125 PetriNetUnfolderBase]: For 3886/3903 co-relation queries the response was YES. [2024-06-04 15:41:37,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6561 conditions, 1942 events. 1263/1942 cut-off events. For 3886/3903 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9416 event pairs, 500 based on Foata normal form. 16/1950 useless extension candidates. Maximal degree in co-relation 6532. Up to 1853 conditions per place. [2024-06-04 15:41:37,130 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 61 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-06-04 15:41:37,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 83 transitions, 550 flow [2024-06-04 15:41:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 15:41:37,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-04 15:41:37,132 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 338 flow. Second operand 6 states and 122 transitions. [2024-06-04 15:41:37,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 83 transitions, 550 flow [2024-06-04 15:41:37,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 544 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-04 15:41:37,138 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 386 flow [2024-06-04 15:41:37,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-06-04 15:41:37,140 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-04 15:41:37,140 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 386 flow [2024-06-04 15:41:37,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:37,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:37,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:41:37,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:37,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash -854978038, now seen corresponding path program 2 times [2024-06-04 15:41:37,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:37,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666660616] [2024-06-04 15:41:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:37,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:37,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:37,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666660616] [2024-06-04 15:41:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666660616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:37,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:37,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:41:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733544822] [2024-06-04 15:41:37,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:37,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:41:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:41:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:41:37,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:41:37,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:37,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:37,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:41:37,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:38,162 INFO L124 PetriNetUnfolderBase]: 1293/1988 cut-off events. [2024-06-04 15:41:38,163 INFO L125 PetriNetUnfolderBase]: For 5428/5446 co-relation queries the response was YES. [2024-06-04 15:41:38,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 1988 events. 1293/1988 cut-off events. For 5428/5446 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9716 event pairs, 499 based on Foata normal form. 13/1990 useless extension candidates. Maximal degree in co-relation 7292. Up to 1865 conditions per place. [2024-06-04 15:41:38,175 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 59 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2024-06-04 15:41:38,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 628 flow [2024-06-04 15:41:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:41:38,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:41:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 15:41:38,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-04 15:41:38,178 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 386 flow. Second operand 6 states and 122 transitions. [2024-06-04 15:41:38,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 628 flow [2024-06-04 15:41:38,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 598 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:41:38,182 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 464 flow [2024-06-04 15:41:38,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-04 15:41:38,184 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-04 15:41:38,184 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 464 flow [2024-06-04 15:41:38,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:38,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:38,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:38,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:41:38,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:38,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash -854969110, now seen corresponding path program 1 times [2024-06-04 15:41:38,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:38,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760842251] [2024-06-04 15:41:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:38,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:39,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:39,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760842251] [2024-06-04 15:41:39,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760842251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:39,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:39,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:39,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147833331] [2024-06-04 15:41:39,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:39,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:41:39,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 464 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:39,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:39,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:41:39,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:39,496 INFO L124 PetriNetUnfolderBase]: 1265/1960 cut-off events. [2024-06-04 15:41:39,497 INFO L125 PetriNetUnfolderBase]: For 7349/7369 co-relation queries the response was YES. [2024-06-04 15:41:39,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7623 conditions, 1960 events. 1265/1960 cut-off events. For 7349/7369 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9755 event pairs, 504 based on Foata normal form. 2/1932 useless extension candidates. Maximal degree in co-relation 7589. Up to 1824 conditions per place. [2024-06-04 15:41:39,515 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 65 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-04 15:41:39,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 684 flow [2024-06-04 15:41:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 15:41:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-04 15:41:39,517 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 464 flow. Second operand 7 states and 136 transitions. [2024-06-04 15:41:39,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 684 flow [2024-06-04 15:41:39,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 653 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:39,522 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 489 flow [2024-06-04 15:41:39,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-06-04 15:41:39,522 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-04 15:41:39,522 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 489 flow [2024-06-04 15:41:39,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:39,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:39,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:39,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:41:39,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:39,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash -939978853, now seen corresponding path program 1 times [2024-06-04 15:41:39,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:39,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020842355] [2024-06-04 15:41:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:39,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:40,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020842355] [2024-06-04 15:41:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020842355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:40,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:40,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:40,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870710591] [2024-06-04 15:41:40,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:40,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:40,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:40,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:40,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:40,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:40,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 489 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:40,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:40,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:40,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:40,636 INFO L124 PetriNetUnfolderBase]: 1364/2081 cut-off events. [2024-06-04 15:41:40,636 INFO L125 PetriNetUnfolderBase]: For 8374/8374 co-relation queries the response was YES. [2024-06-04 15:41:40,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 2081 events. 1364/2081 cut-off events. For 8374/8374 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10006 event pairs, 518 based on Foata normal form. 4/2083 useless extension candidates. Maximal degree in co-relation 8479. Up to 1981 conditions per place. [2024-06-04 15:41:40,650 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 87 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2024-06-04 15:41:40,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 815 flow [2024-06-04 15:41:40,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-04 15:41:40,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-04 15:41:40,652 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 489 flow. Second operand 7 states and 135 transitions. [2024-06-04 15:41:40,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 815 flow [2024-06-04 15:41:40,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 783 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:40,657 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 575 flow [2024-06-04 15:41:40,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-06-04 15:41:40,658 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-04 15:41:40,658 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 575 flow [2024-06-04 15:41:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:40,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:40,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:40,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:41:40,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:40,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash -734514705, now seen corresponding path program 2 times [2024-06-04 15:41:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:40,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863812598] [2024-06-04 15:41:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:40,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:41,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863812598] [2024-06-04 15:41:41,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863812598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:41,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:41,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:41,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799748277] [2024-06-04 15:41:41,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:41,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:41,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:41,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:41,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:41,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:41,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:41,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:41,762 INFO L124 PetriNetUnfolderBase]: 1402/2146 cut-off events. [2024-06-04 15:41:41,762 INFO L125 PetriNetUnfolderBase]: For 10942/10942 co-relation queries the response was YES. [2024-06-04 15:41:41,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9318 conditions, 2146 events. 1402/2146 cut-off events. For 10942/10942 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10406 event pairs, 530 based on Foata normal form. 4/2146 useless extension candidates. Maximal degree in co-relation 9279. Up to 1953 conditions per place. [2024-06-04 15:41:41,773 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 84 selfloop transitions, 25 changer transitions 0/114 dead transitions. [2024-06-04 15:41:41,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 951 flow [2024-06-04 15:41:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 15:41:41,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-04 15:41:41,775 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 575 flow. Second operand 7 states and 139 transitions. [2024-06-04 15:41:41,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 951 flow [2024-06-04 15:41:41,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 925 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:41,781 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 682 flow [2024-06-04 15:41:41,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-06-04 15:41:41,782 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-04 15:41:41,782 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 682 flow [2024-06-04 15:41:41,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:41,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:41,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:41,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:41:41,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:41,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -734247795, now seen corresponding path program 3 times [2024-06-04 15:41:41,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:41,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361508329] [2024-06-04 15:41:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:42,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361508329] [2024-06-04 15:41:42,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361508329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:42,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917090964] [2024-06-04 15:41:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:42,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:42,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:42,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:42,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:42,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 682 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:42,836 INFO L124 PetriNetUnfolderBase]: 1392/2127 cut-off events. [2024-06-04 15:41:42,836 INFO L125 PetriNetUnfolderBase]: For 13319/13319 co-relation queries the response was YES. [2024-06-04 15:41:42,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 2127 events. 1392/2127 cut-off events. For 13319/13319 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10284 event pairs, 523 based on Foata normal form. 4/2127 useless extension candidates. Maximal degree in co-relation 9794. Up to 1945 conditions per place. [2024-06-04 15:41:42,851 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 81 selfloop transitions, 27 changer transitions 0/113 dead transitions. [2024-06-04 15:41:42,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 969 flow [2024-06-04 15:41:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 15:41:42,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-04 15:41:42,853 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 682 flow. Second operand 7 states and 136 transitions. [2024-06-04 15:41:42,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 969 flow [2024-06-04 15:41:42,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 113 transitions, 887 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:42,867 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 673 flow [2024-06-04 15:41:42,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=673, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-06-04 15:41:42,868 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-04 15:41:42,868 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 673 flow [2024-06-04 15:41:42,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:42,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:42,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:42,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:41:42,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:42,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -734237875, now seen corresponding path program 1 times [2024-06-04 15:41:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:42,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017779946] [2024-06-04 15:41:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:43,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:43,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017779946] [2024-06-04 15:41:43,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017779946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:43,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:43,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:43,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664384496] [2024-06-04 15:41:43,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:43,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:43,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:43,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:41:43,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 673 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:43,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:43,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:41:43,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:44,287 INFO L124 PetriNetUnfolderBase]: 1298/2035 cut-off events. [2024-06-04 15:41:44,287 INFO L125 PetriNetUnfolderBase]: For 14878/14878 co-relation queries the response was YES. [2024-06-04 15:41:44,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9416 conditions, 2035 events. 1298/2035 cut-off events. For 14878/14878 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10105 event pairs, 476 based on Foata normal form. 4/2023 useless extension candidates. Maximal degree in co-relation 9374. Up to 1850 conditions per place. [2024-06-04 15:41:44,301 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 88 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-04 15:41:44,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 957 flow [2024-06-04 15:41:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 15:41:44,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 15:41:44,303 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 673 flow. Second operand 8 states and 154 transitions. [2024-06-04 15:41:44,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 957 flow [2024-06-04 15:41:44,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 117 transitions, 915 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 15:41:44,313 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 690 flow [2024-06-04 15:41:44,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-06-04 15:41:44,315 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-04 15:41:44,315 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 690 flow [2024-06-04 15:41:44,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:44,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:44,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:41:44,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:44,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash 925242783, now seen corresponding path program 1 times [2024-06-04 15:41:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862730539] [2024-06-04 15:41:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:45,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:45,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862730539] [2024-06-04 15:41:45,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862730539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:45,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:45,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:41:45,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147990327] [2024-06-04 15:41:45,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:45,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:41:45,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:45,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:41:45,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:41:45,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:41:45,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 690 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:45,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:45,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:41:45,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:45,600 INFO L124 PetriNetUnfolderBase]: 1332/2061 cut-off events. [2024-06-04 15:41:45,601 INFO L125 PetriNetUnfolderBase]: For 17825/17865 co-relation queries the response was YES. [2024-06-04 15:41:45,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9890 conditions, 2061 events. 1332/2061 cut-off events. For 17825/17865 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10167 event pairs, 464 based on Foata normal form. 21/2033 useless extension candidates. Maximal degree in co-relation 9847. Up to 1897 conditions per place. [2024-06-04 15:41:45,614 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 86 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-04 15:41:45,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 121 transitions, 992 flow [2024-06-04 15:41:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:41:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:41:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-04 15:41:45,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-04 15:41:45,616 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 690 flow. Second operand 7 states and 142 transitions. [2024-06-04 15:41:45,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 121 transitions, 992 flow [2024-06-04 15:41:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 951 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:45,627 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 729 flow [2024-06-04 15:41:45,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2024-06-04 15:41:45,628 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-06-04 15:41:45,628 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 729 flow [2024-06-04 15:41:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:45,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:45,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:41:45,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:45,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash 925427357, now seen corresponding path program 1 times [2024-06-04 15:41:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938026372] [2024-06-04 15:41:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:46,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:46,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938026372] [2024-06-04 15:41:46,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938026372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:46,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:46,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:46,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369962141] [2024-06-04 15:41:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:46,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:46,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:46,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:46,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:46,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:46,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:46,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:46,974 INFO L124 PetriNetUnfolderBase]: 1387/2130 cut-off events. [2024-06-04 15:41:46,974 INFO L125 PetriNetUnfolderBase]: For 18839/18839 co-relation queries the response was YES. [2024-06-04 15:41:46,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10402 conditions, 2130 events. 1387/2130 cut-off events. For 18839/18839 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10335 event pairs, 484 based on Foata normal form. 2/2130 useless extension candidates. Maximal degree in co-relation 10358. Up to 2029 conditions per place. [2024-06-04 15:41:46,987 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 109 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2024-06-04 15:41:46,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 1099 flow [2024-06-04 15:41:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 15:41:46,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-04 15:41:46,989 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 729 flow. Second operand 8 states and 150 transitions. [2024-06-04 15:41:46,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 1099 flow [2024-06-04 15:41:47,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1045 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:47,002 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 791 flow [2024-06-04 15:41:47,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2024-06-04 15:41:47,003 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-04 15:41:47,003 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 791 flow [2024-06-04 15:41:47,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:47,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:47,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:47,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:41:47,003 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)] === [2024-06-04 15:41:47,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1258250595, now seen corresponding path program 2 times [2024-06-04 15:41:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:47,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714440173] [2024-06-04 15:41:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:47,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714440173] [2024-06-04 15:41:47,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714440173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:47,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:47,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:47,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503756777] [2024-06-04 15:41:47,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:47,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:47,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:47,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:47,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 791 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:47,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:47,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:47,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:48,292 INFO L124 PetriNetUnfolderBase]: 1398/2151 cut-off events. [2024-06-04 15:41:48,293 INFO L125 PetriNetUnfolderBase]: For 21430/21430 co-relation queries the response was YES. [2024-06-04 15:41:48,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10924 conditions, 2151 events. 1398/2151 cut-off events. For 21430/21430 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10506 event pairs, 484 based on Foata normal form. 2/2149 useless extension candidates. Maximal degree in co-relation 10877. Up to 2000 conditions per place. [2024-06-04 15:41:48,305 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 106 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2024-06-04 15:41:48,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 139 transitions, 1191 flow [2024-06-04 15:41:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 15:41:48,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-04 15:41:48,306 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 791 flow. Second operand 8 states and 151 transitions. [2024-06-04 15:41:48,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 139 transitions, 1191 flow [2024-06-04 15:41:48,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 1167 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:48,319 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 934 flow [2024-06-04 15:41:48,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=934, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2024-06-04 15:41:48,320 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-04 15:41:48,320 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 934 flow [2024-06-04 15:41:48,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:48,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:48,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:48,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:41:48,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:48,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1286547767, now seen corresponding path program 3 times [2024-06-04 15:41:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:48,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145239408] [2024-06-04 15:41:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:49,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:49,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145239408] [2024-06-04 15:41:49,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145239408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:49,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:49,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453083440] [2024-06-04 15:41:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:49,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:49,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:49,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:49,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:49,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:49,743 INFO L124 PetriNetUnfolderBase]: 1420/2178 cut-off events. [2024-06-04 15:41:49,743 INFO L125 PetriNetUnfolderBase]: For 24932/24932 co-relation queries the response was YES. [2024-06-04 15:41:49,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11694 conditions, 2178 events. 1420/2178 cut-off events. For 24932/24932 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10553 event pairs, 484 based on Foata normal form. 4/2178 useless extension candidates. Maximal degree in co-relation 11643. Up to 1920 conditions per place. [2024-06-04 15:41:49,756 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 95 selfloop transitions, 53 changer transitions 0/153 dead transitions. [2024-06-04 15:41:49,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 153 transitions, 1447 flow [2024-06-04 15:41:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 15:41:49,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-04 15:41:49,757 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 934 flow. Second operand 9 states and 175 transitions. [2024-06-04 15:41:49,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 153 transitions, 1447 flow [2024-06-04 15:41:49,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 153 transitions, 1399 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:49,774 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 1091 flow [2024-06-04 15:41:49,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1091, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2024-06-04 15:41:49,774 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-04 15:41:49,774 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 1091 flow [2024-06-04 15:41:49,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:49,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:49,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:49,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:41:49,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:49,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1894011676, now seen corresponding path program 1 times [2024-06-04 15:41:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534340834] [2024-06-04 15:41:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:49,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:50,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:50,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534340834] [2024-06-04 15:41:50,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534340834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:50,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:50,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:50,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422983354] [2024-06-04 15:41:50,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:50,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:50,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:50,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:50,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 1091 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:50,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:50,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:50,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:51,336 INFO L124 PetriNetUnfolderBase]: 1478/2274 cut-off events. [2024-06-04 15:41:51,336 INFO L125 PetriNetUnfolderBase]: For 28764/28764 co-relation queries the response was YES. [2024-06-04 15:41:51,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12889 conditions, 2274 events. 1478/2274 cut-off events. For 28764/28764 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11053 event pairs, 473 based on Foata normal form. 2/2274 useless extension candidates. Maximal degree in co-relation 12836. Up to 2136 conditions per place. [2024-06-04 15:41:51,352 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 141 selfloop transitions, 27 changer transitions 0/173 dead transitions. [2024-06-04 15:41:51,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 173 transitions, 1698 flow [2024-06-04 15:41:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 15:41:51,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:41:51,359 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 1091 flow. Second operand 9 states and 171 transitions. [2024-06-04 15:41:51,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 173 transitions, 1698 flow [2024-06-04 15:41:51,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 173 transitions, 1610 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 15:41:51,386 INFO L231 Difference]: Finished difference. Result has 117 places, 143 transitions, 1296 flow [2024-06-04 15:41:51,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1296, PETRI_PLACES=117, PETRI_TRANSITIONS=143} [2024-06-04 15:41:51,387 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-04 15:41:51,387 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 143 transitions, 1296 flow [2024-06-04 15:41:51,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:51,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:51,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:51,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:41:51,388 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:51,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1252703160, now seen corresponding path program 2 times [2024-06-04 15:41:51,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:51,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406040439] [2024-06-04 15:41:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:51,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406040439] [2024-06-04 15:41:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406040439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:41:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642134538] [2024-06-04 15:41:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:52,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:41:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:41:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:41:52,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:52,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 1296 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:52,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:52,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:52,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:52,903 INFO L124 PetriNetUnfolderBase]: 1473/2277 cut-off events. [2024-06-04 15:41:52,903 INFO L125 PetriNetUnfolderBase]: For 32096/32096 co-relation queries the response was YES. [2024-06-04 15:41:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13364 conditions, 2277 events. 1473/2277 cut-off events. For 32096/32096 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11120 event pairs, 453 based on Foata normal form. 2/2277 useless extension candidates. Maximal degree in co-relation 13306. Up to 2106 conditions per place. [2024-06-04 15:41:52,920 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 141 selfloop transitions, 32 changer transitions 0/178 dead transitions. [2024-06-04 15:41:52,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 178 transitions, 1810 flow [2024-06-04 15:41:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:41:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:41:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 15:41:52,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-04 15:41:52,925 INFO L175 Difference]: Start difference. First operand has 117 places, 143 transitions, 1296 flow. Second operand 8 states and 153 transitions. [2024-06-04 15:41:52,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 178 transitions, 1810 flow [2024-06-04 15:41:52,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1730 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-04 15:41:52,958 INFO L231 Difference]: Finished difference. Result has 124 places, 149 transitions, 1385 flow [2024-06-04 15:41:52,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1385, PETRI_PLACES=124, PETRI_TRANSITIONS=149} [2024-06-04 15:41:52,958 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-04 15:41:52,958 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 149 transitions, 1385 flow [2024-06-04 15:41:52,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:52,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:52,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:52,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:41:52,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:52,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash 31027308, now seen corresponding path program 1 times [2024-06-04 15:41:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:52,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231186044] [2024-06-04 15:41:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:52,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:53,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:53,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231186044] [2024-06-04 15:41:53,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231186044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:53,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:53,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:53,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605601957] [2024-06-04 15:41:53,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:53,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:53,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:53,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:53,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:53,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 149 transitions, 1385 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:53,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:53,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:53,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:54,503 INFO L124 PetriNetUnfolderBase]: 1490/2304 cut-off events. [2024-06-04 15:41:54,503 INFO L125 PetriNetUnfolderBase]: For 36657/36657 co-relation queries the response was YES. [2024-06-04 15:41:54,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13990 conditions, 2304 events. 1490/2304 cut-off events. For 36657/36657 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11283 event pairs, 449 based on Foata normal form. 4/2306 useless extension candidates. Maximal degree in co-relation 13929. Up to 2155 conditions per place. [2024-06-04 15:41:54,518 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 156 selfloop transitions, 22 changer transitions 0/183 dead transitions. [2024-06-04 15:41:54,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 183 transitions, 1871 flow [2024-06-04 15:41:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:41:54,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-04 15:41:54,519 INFO L175 Difference]: Start difference. First operand has 124 places, 149 transitions, 1385 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:41:54,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 183 transitions, 1871 flow [2024-06-04 15:41:54,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 183 transitions, 1792 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-04 15:41:54,551 INFO L231 Difference]: Finished difference. Result has 130 places, 151 transitions, 1389 flow [2024-06-04 15:41:54,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1389, PETRI_PLACES=130, PETRI_TRANSITIONS=151} [2024-06-04 15:41:54,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-04 15:41:54,552 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 151 transitions, 1389 flow [2024-06-04 15:41:54,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:54,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:54,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:54,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:41:54,553 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:54,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1493971634, now seen corresponding path program 2 times [2024-06-04 15:41:54,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:54,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870401832] [2024-06-04 15:41:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:55,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870401832] [2024-06-04 15:41:55,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870401832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:55,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:55,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:55,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21740580] [2024-06-04 15:41:55,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:55,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:55,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:55,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 151 transitions, 1389 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:55,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:55,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:55,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:56,078 INFO L124 PetriNetUnfolderBase]: 1507/2333 cut-off events. [2024-06-04 15:41:56,078 INFO L125 PetriNetUnfolderBase]: For 36540/36540 co-relation queries the response was YES. [2024-06-04 15:41:56,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 2333 events. 1507/2333 cut-off events. For 36540/36540 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11491 event pairs, 461 based on Foata normal form. 4/2331 useless extension candidates. Maximal degree in co-relation 14042. Up to 2137 conditions per place. [2024-06-04 15:41:56,092 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 145 selfloop transitions, 33 changer transitions 0/183 dead transitions. [2024-06-04 15:41:56,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 183 transitions, 1873 flow [2024-06-04 15:41:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 15:41:56,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 15:41:56,093 INFO L175 Difference]: Start difference. First operand has 130 places, 151 transitions, 1389 flow. Second operand 9 states and 168 transitions. [2024-06-04 15:41:56,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 183 transitions, 1873 flow [2024-06-04 15:41:56,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1806 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 15:41:56,120 INFO L231 Difference]: Finished difference. Result has 132 places, 153 transitions, 1431 flow [2024-06-04 15:41:56,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1431, PETRI_PLACES=132, PETRI_TRANSITIONS=153} [2024-06-04 15:41:56,120 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-04 15:41:56,121 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 153 transitions, 1431 flow [2024-06-04 15:41:56,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:56,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:56,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:56,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:41:56,121 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:56,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:56,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1834801306, now seen corresponding path program 3 times [2024-06-04 15:41:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:56,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941424727] [2024-06-04 15:41:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:56,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:57,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:57,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941424727] [2024-06-04 15:41:57,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941424727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:57,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:57,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309689039] [2024-06-04 15:41:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:57,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:57,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:57,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 153 transitions, 1431 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:57,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:57,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:57,940 INFO L124 PetriNetUnfolderBase]: 1635/2540 cut-off events. [2024-06-04 15:41:57,940 INFO L125 PetriNetUnfolderBase]: For 45262/45262 co-relation queries the response was YES. [2024-06-04 15:41:57,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15870 conditions, 2540 events. 1635/2540 cut-off events. For 45262/45262 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12831 event pairs, 437 based on Foata normal form. 4/2539 useless extension candidates. Maximal degree in co-relation 15806. Up to 1960 conditions per place. [2024-06-04 15:41:57,955 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 127 selfloop transitions, 67 changer transitions 0/199 dead transitions. [2024-06-04 15:41:57,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 199 transitions, 2230 flow [2024-06-04 15:41:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:41:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:41:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-04 15:41:57,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-04 15:41:57,957 INFO L175 Difference]: Start difference. First operand has 132 places, 153 transitions, 1431 flow. Second operand 10 states and 192 transitions. [2024-06-04 15:41:57,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 199 transitions, 2230 flow [2024-06-04 15:41:57,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 199 transitions, 2135 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:41:57,997 INFO L231 Difference]: Finished difference. Result has 136 places, 160 transitions, 1590 flow [2024-06-04 15:41:57,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1590, PETRI_PLACES=136, PETRI_TRANSITIONS=160} [2024-06-04 15:41:57,998 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-04 15:41:57,998 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 160 transitions, 1590 flow [2024-06-04 15:41:57,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:57,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:57,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:57,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:41:57,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:57,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:57,999 INFO L85 PathProgramCache]: Analyzing trace with hash -94561512, now seen corresponding path program 4 times [2024-06-04 15:41:57,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:57,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68924259] [2024-06-04 15:41:58,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:58,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:41:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:41:58,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:41:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68924259] [2024-06-04 15:41:58,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68924259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:41:58,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:41:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:41:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391023892] [2024-06-04 15:41:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:41:58,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:41:58,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:41:58,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:41:58,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:41:58,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:41:58,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 160 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:58,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:41:58,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:41:58,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:41:59,540 INFO L124 PetriNetUnfolderBase]: 1663/2589 cut-off events. [2024-06-04 15:41:59,540 INFO L125 PetriNetUnfolderBase]: For 50434/50434 co-relation queries the response was YES. [2024-06-04 15:41:59,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16574 conditions, 2589 events. 1663/2589 cut-off events. For 50434/50434 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13020 event pairs, 470 based on Foata normal form. 4/2587 useless extension candidates. Maximal degree in co-relation 16508. Up to 2388 conditions per place. [2024-06-04 15:41:59,560 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 153 selfloop transitions, 36 changer transitions 0/194 dead transitions. [2024-06-04 15:41:59,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 194 transitions, 2120 flow [2024-06-04 15:41:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:41:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:41:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:41:59,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-04 15:41:59,561 INFO L175 Difference]: Start difference. First operand has 136 places, 160 transitions, 1590 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:41:59,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 194 transitions, 2120 flow [2024-06-04 15:41:59,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 194 transitions, 1958 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 15:41:59,613 INFO L231 Difference]: Finished difference. Result has 140 places, 166 transitions, 1587 flow [2024-06-04 15:41:59,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1587, PETRI_PLACES=140, PETRI_TRANSITIONS=166} [2024-06-04 15:41:59,614 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2024-06-04 15:41:59,614 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 166 transitions, 1587 flow [2024-06-04 15:41:59,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:41:59,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:41:59,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:41:59,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:41:59,614 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:41:59,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:41:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1228274354, now seen corresponding path program 5 times [2024-06-04 15:41:59,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:41:59,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837495396] [2024-06-04 15:41:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:41:59,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:41:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:00,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837495396] [2024-06-04 15:42:00,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837495396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:00,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:00,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:00,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890361970] [2024-06-04 15:42:00,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:00,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:00,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:00,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:00,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 166 transitions, 1587 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:00,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:00,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:00,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:01,360 INFO L124 PetriNetUnfolderBase]: 1655/2572 cut-off events. [2024-06-04 15:42:01,360 INFO L125 PetriNetUnfolderBase]: For 51203/51203 co-relation queries the response was YES. [2024-06-04 15:42:01,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16207 conditions, 2572 events. 1655/2572 cut-off events. For 51203/51203 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12911 event pairs, 475 based on Foata normal form. 4/2570 useless extension candidates. Maximal degree in co-relation 16139. Up to 2322 conditions per place. [2024-06-04 15:42:01,377 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 146 selfloop transitions, 50 changer transitions 0/201 dead transitions. [2024-06-04 15:42:01,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 201 transitions, 2115 flow [2024-06-04 15:42:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-04 15:42:01,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-04 15:42:01,378 INFO L175 Difference]: Start difference. First operand has 140 places, 166 transitions, 1587 flow. Second operand 10 states and 185 transitions. [2024-06-04 15:42:01,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 201 transitions, 2115 flow [2024-06-04 15:42:01,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 201 transitions, 2043 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 15:42:01,418 INFO L231 Difference]: Finished difference. Result has 147 places, 169 transitions, 1677 flow [2024-06-04 15:42:01,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=147, PETRI_TRANSITIONS=169} [2024-06-04 15:42:01,418 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-06-04 15:42:01,418 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 169 transitions, 1677 flow [2024-06-04 15:42:01,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:01,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:01,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:42:01,419 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:01,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2073756864, now seen corresponding path program 1 times [2024-06-04 15:42:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2443626] [2024-06-04 15:42:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:02,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:02,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2443626] [2024-06-04 15:42:02,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2443626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:02,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:02,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:42:02,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014995838] [2024-06-04 15:42:02,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:02,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:42:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:42:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:42:02,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:42:02,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 169 transitions, 1677 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:02,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:02,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:42:02,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:02,829 INFO L124 PetriNetUnfolderBase]: 1599/2522 cut-off events. [2024-06-04 15:42:02,829 INFO L125 PetriNetUnfolderBase]: For 55833/55861 co-relation queries the response was YES. [2024-06-04 15:42:02,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16155 conditions, 2522 events. 1599/2522 cut-off events. For 55833/55861 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13023 event pairs, 375 based on Foata normal form. 10/2502 useless extension candidates. Maximal degree in co-relation 16085. Up to 2187 conditions per place. [2024-06-04 15:42:02,848 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 130 selfloop transitions, 28 changer transitions 0/200 dead transitions. [2024-06-04 15:42:02,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 200 transitions, 2103 flow [2024-06-04 15:42:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:42:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:42:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 15:42:02,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-04 15:42:02,849 INFO L175 Difference]: Start difference. First operand has 147 places, 169 transitions, 1677 flow. Second operand 8 states and 160 transitions. [2024-06-04 15:42:02,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 200 transitions, 2103 flow [2024-06-04 15:42:02,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 200 transitions, 1985 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:02,903 INFO L231 Difference]: Finished difference. Result has 148 places, 171 transitions, 1648 flow [2024-06-04 15:42:02,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1648, PETRI_PLACES=148, PETRI_TRANSITIONS=171} [2024-06-04 15:42:02,904 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-04 15:42:02,904 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 171 transitions, 1648 flow [2024-06-04 15:42:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:02,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:02,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:42:02,905 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:02,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash 270803996, now seen corresponding path program 2 times [2024-06-04 15:42:02,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:02,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98426892] [2024-06-04 15:42:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:03,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98426892] [2024-06-04 15:42:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98426892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:03,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:42:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401933050] [2024-06-04 15:42:03,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:42:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:42:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:42:03,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:42:03,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 171 transitions, 1648 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:03,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:03,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:42:03,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:04,385 INFO L124 PetriNetUnfolderBase]: 1625/2562 cut-off events. [2024-06-04 15:42:04,385 INFO L125 PetriNetUnfolderBase]: For 57893/57908 co-relation queries the response was YES. [2024-06-04 15:42:04,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16429 conditions, 2562 events. 1625/2562 cut-off events. For 57893/57908 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13263 event pairs, 450 based on Foata normal form. 8/2528 useless extension candidates. Maximal degree in co-relation 16358. Up to 2282 conditions per place. [2024-06-04 15:42:04,406 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 133 selfloop transitions, 27 changer transitions 0/202 dead transitions. [2024-06-04 15:42:04,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 202 transitions, 2102 flow [2024-06-04 15:42:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:42:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:42:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:42:04,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-04 15:42:04,407 INFO L175 Difference]: Start difference. First operand has 148 places, 171 transitions, 1648 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:42:04,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 202 transitions, 2102 flow [2024-06-04 15:42:04,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 202 transitions, 2031 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:04,457 INFO L231 Difference]: Finished difference. Result has 151 places, 176 transitions, 1707 flow [2024-06-04 15:42:04,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1707, PETRI_PLACES=151, PETRI_TRANSITIONS=176} [2024-06-04 15:42:04,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2024-06-04 15:42:04,458 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 176 transitions, 1707 flow [2024-06-04 15:42:04,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:04,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:04,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:04,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:42:04,459 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)] === [2024-06-04 15:42:04,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash -12922818, now seen corresponding path program 3 times [2024-06-04 15:42:04,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:04,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976087856] [2024-06-04 15:42:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:04,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:05,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976087856] [2024-06-04 15:42:05,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976087856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:05,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:05,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:42:05,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328112994] [2024-06-04 15:42:05,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:05,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:42:05,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:42:05,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:42:05,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:42:05,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 176 transitions, 1707 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:05,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:05,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:42:05,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:06,024 INFO L124 PetriNetUnfolderBase]: 1640/2594 cut-off events. [2024-06-04 15:42:06,024 INFO L125 PetriNetUnfolderBase]: For 63295/63310 co-relation queries the response was YES. [2024-06-04 15:42:06,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16971 conditions, 2594 events. 1640/2594 cut-off events. For 63295/63310 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13491 event pairs, 444 based on Foata normal form. 8/2558 useless extension candidates. Maximal degree in co-relation 16898. Up to 2273 conditions per place. [2024-06-04 15:42:06,044 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 131 selfloop transitions, 33 changer transitions 0/206 dead transitions. [2024-06-04 15:42:06,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 206 transitions, 2151 flow [2024-06-04 15:42:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:42:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:42:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 15:42:06,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-04 15:42:06,045 INFO L175 Difference]: Start difference. First operand has 151 places, 176 transitions, 1707 flow. Second operand 8 states and 160 transitions. [2024-06-04 15:42:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 206 transitions, 2151 flow [2024-06-04 15:42:06,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 206 transitions, 2075 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:06,102 INFO L231 Difference]: Finished difference. Result has 154 places, 178 transitions, 1740 flow [2024-06-04 15:42:06,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1740, PETRI_PLACES=154, PETRI_TRANSITIONS=178} [2024-06-04 15:42:06,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-04 15:42:06,103 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 178 transitions, 1740 flow [2024-06-04 15:42:06,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:06,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:06,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:06,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:42:06,104 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:06,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash 277238046, now seen corresponding path program 1 times [2024-06-04 15:42:06,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:06,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849223432] [2024-06-04 15:42:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:06,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:07,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:07,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849223432] [2024-06-04 15:42:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849223432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:07,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:07,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:07,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407717308] [2024-06-04 15:42:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:07,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:07,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:07,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:07,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:07,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:07,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 178 transitions, 1740 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:07,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:07,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:07,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:07,820 INFO L124 PetriNetUnfolderBase]: 1752/2731 cut-off events. [2024-06-04 15:42:07,821 INFO L125 PetriNetUnfolderBase]: For 64734/64734 co-relation queries the response was YES. [2024-06-04 15:42:07,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 2731 events. 1752/2731 cut-off events. For 64734/64734 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13928 event pairs, 467 based on Foata normal form. 2/2731 useless extension candidates. Maximal degree in co-relation 17975. Up to 2561 conditions per place. [2024-06-04 15:42:07,841 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 179 selfloop transitions, 29 changer transitions 0/213 dead transitions. [2024-06-04 15:42:07,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 213 transitions, 2309 flow [2024-06-04 15:42:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:42:07,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-04 15:42:07,845 INFO L175 Difference]: Start difference. First operand has 154 places, 178 transitions, 1740 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:42:07,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 213 transitions, 2309 flow [2024-06-04 15:42:07,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 213 transitions, 2222 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:07,905 INFO L231 Difference]: Finished difference. Result has 157 places, 184 transitions, 1788 flow [2024-06-04 15:42:07,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=157, PETRI_TRANSITIONS=184} [2024-06-04 15:42:07,906 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-04 15:42:07,906 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 184 transitions, 1788 flow [2024-06-04 15:42:07,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:07,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:07,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:07,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:42:07,906 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:07,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:07,907 INFO L85 PathProgramCache]: Analyzing trace with hash 270808956, now seen corresponding path program 2 times [2024-06-04 15:42:07,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:07,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531224925] [2024-06-04 15:42:07,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:07,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:08,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531224925] [2024-06-04 15:42:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531224925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:08,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:08,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636639865] [2024-06-04 15:42:08,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:08,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:09,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:09,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 184 transitions, 1788 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:09,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:09,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:09,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:09,714 INFO L124 PetriNetUnfolderBase]: 1763/2747 cut-off events. [2024-06-04 15:42:09,715 INFO L125 PetriNetUnfolderBase]: For 69129/69129 co-relation queries the response was YES. [2024-06-04 15:42:09,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18261 conditions, 2747 events. 1763/2747 cut-off events. For 69129/69129 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14021 event pairs, 456 based on Foata normal form. 2/2747 useless extension candidates. Maximal degree in co-relation 18186. Up to 2577 conditions per place. [2024-06-04 15:42:09,735 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 182 selfloop transitions, 29 changer transitions 0/216 dead transitions. [2024-06-04 15:42:09,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 216 transitions, 2345 flow [2024-06-04 15:42:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:42:09,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-04 15:42:09,736 INFO L175 Difference]: Start difference. First operand has 157 places, 184 transitions, 1788 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:42:09,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 216 transitions, 2345 flow [2024-06-04 15:42:09,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 216 transitions, 2265 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:09,800 INFO L231 Difference]: Finished difference. Result has 160 places, 187 transitions, 1825 flow [2024-06-04 15:42:09,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1825, PETRI_PLACES=160, PETRI_TRANSITIONS=187} [2024-06-04 15:42:09,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-04 15:42:09,801 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 187 transitions, 1825 flow [2024-06-04 15:42:09,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:09,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:09,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:09,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:42:09,801 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:09,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:09,802 INFO L85 PathProgramCache]: Analyzing trace with hash 277475196, now seen corresponding path program 3 times [2024-06-04 15:42:09,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:09,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946347836] [2024-06-04 15:42:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:09,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946347836] [2024-06-04 15:42:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946347836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:10,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:10,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067107680] [2024-06-04 15:42:10,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:10,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:10,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:10,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:10,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 187 transitions, 1825 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:10,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:10,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:10,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:11,478 INFO L124 PetriNetUnfolderBase]: 1790/2792 cut-off events. [2024-06-04 15:42:11,478 INFO L125 PetriNetUnfolderBase]: For 75187/75187 co-relation queries the response was YES. [2024-06-04 15:42:11,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18774 conditions, 2792 events. 1790/2792 cut-off events. For 75187/75187 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14318 event pairs, 438 based on Foata normal form. 2/2792 useless extension candidates. Maximal degree in co-relation 18698. Up to 2501 conditions per place. [2024-06-04 15:42:11,501 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 160 selfloop transitions, 58 changer transitions 0/223 dead transitions. [2024-06-04 15:42:11,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 223 transitions, 2557 flow [2024-06-04 15:42:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 15:42:11,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-04 15:42:11,503 INFO L175 Difference]: Start difference. First operand has 160 places, 187 transitions, 1825 flow. Second operand 9 states and 173 transitions. [2024-06-04 15:42:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 223 transitions, 2557 flow [2024-06-04 15:42:11,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 223 transitions, 2460 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:11,572 INFO L231 Difference]: Finished difference. Result has 161 places, 193 transitions, 1962 flow [2024-06-04 15:42:11,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1962, PETRI_PLACES=161, PETRI_TRANSITIONS=193} [2024-06-04 15:42:11,573 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-04 15:42:11,573 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 193 transitions, 1962 flow [2024-06-04 15:42:11,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:11,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:11,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:11,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:42:11,574 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:11,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -10121348, now seen corresponding path program 4 times [2024-06-04 15:42:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277018619] [2024-06-04 15:42:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:12,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:12,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277018619] [2024-06-04 15:42:12,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277018619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:12,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:12,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:12,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441743167] [2024-06-04 15:42:12,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:12,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:12,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:12,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:12,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:12,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:12,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 193 transitions, 1962 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:12,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:12,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:13,311 INFO L124 PetriNetUnfolderBase]: 1785/2787 cut-off events. [2024-06-04 15:42:13,311 INFO L125 PetriNetUnfolderBase]: For 80823/80823 co-relation queries the response was YES. [2024-06-04 15:42:13,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19187 conditions, 2787 events. 1785/2787 cut-off events. For 80823/80823 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14272 event pairs, 447 based on Foata normal form. 2/2787 useless extension candidates. Maximal degree in co-relation 19112. Up to 2582 conditions per place. [2024-06-04 15:42:13,330 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 183 selfloop transitions, 36 changer transitions 0/224 dead transitions. [2024-06-04 15:42:13,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 224 transitions, 2496 flow [2024-06-04 15:42:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 15:42:13,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-04 15:42:13,331 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 1962 flow. Second operand 9 states and 170 transitions. [2024-06-04 15:42:13,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 224 transitions, 2496 flow [2024-06-04 15:42:13,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 224 transitions, 2337 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:13,409 INFO L231 Difference]: Finished difference. Result has 164 places, 193 transitions, 1884 flow [2024-06-04 15:42:13,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1884, PETRI_PLACES=164, PETRI_TRANSITIONS=193} [2024-06-04 15:42:13,409 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-04 15:42:13,410 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 193 transitions, 1884 flow [2024-06-04 15:42:13,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:13,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:13,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:13,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:42:13,410 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:13,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1871732352, now seen corresponding path program 1 times [2024-06-04 15:42:13,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:13,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002255550] [2024-06-04 15:42:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:13,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:14,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:14,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002255550] [2024-06-04 15:42:14,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002255550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:14,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:14,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:14,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664200472] [2024-06-04 15:42:14,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:14,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:14,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:14,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:14,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:14,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 193 transitions, 1884 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-04 15:42:14,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:14,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:14,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:14,741 INFO L124 PetriNetUnfolderBase]: 1815/2835 cut-off events. [2024-06-04 15:42:14,741 INFO L125 PetriNetUnfolderBase]: For 86076/86076 co-relation queries the response was YES. [2024-06-04 15:42:14,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 2835 events. 1815/2835 cut-off events. For 86076/86076 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14579 event pairs, 414 based on Foata normal form. 4/2837 useless extension candidates. Maximal degree in co-relation 19353. Up to 2606 conditions per place. [2024-06-04 15:42:14,760 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 181 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-04 15:42:14,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 224 transitions, 2575 flow [2024-06-04 15:42:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:42:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:42:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 15:42:14,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-04 15:42:14,762 INFO L175 Difference]: Start difference. First operand has 164 places, 193 transitions, 1884 flow. Second operand 7 states and 137 transitions. [2024-06-04 15:42:14,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 224 transitions, 2575 flow [2024-06-04 15:42:14,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 224 transitions, 2479 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:14,829 INFO L231 Difference]: Finished difference. Result has 164 places, 204 transitions, 2002 flow [2024-06-04 15:42:14,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2002, PETRI_PLACES=164, PETRI_TRANSITIONS=204} [2024-06-04 15:42:14,829 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-04 15:42:14,829 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 204 transitions, 2002 flow [2024-06-04 15:42:14,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-04 15:42:14,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:14,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:14,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:42:14,830 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:14,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash 924840264, now seen corresponding path program 4 times [2024-06-04 15:42:14,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:14,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024092198] [2024-06-04 15:42:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:14,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024092198] [2024-06-04 15:42:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024092198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:15,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:42:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159389830] [2024-06-04 15:42:15,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:15,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:42:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:15,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:42:15,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:42:15,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:42:15,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 204 transitions, 2002 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:15,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:15,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:42:15,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:16,321 INFO L124 PetriNetUnfolderBase]: 1720/2722 cut-off events. [2024-06-04 15:42:16,321 INFO L125 PetriNetUnfolderBase]: For 94179/94216 co-relation queries the response was YES. [2024-06-04 15:42:16,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19102 conditions, 2722 events. 1720/2722 cut-off events. For 94179/94216 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14308 event pairs, 408 based on Foata normal form. 8/2689 useless extension candidates. Maximal degree in co-relation 19024. Up to 2376 conditions per place. [2024-06-04 15:42:16,344 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 146 selfloop transitions, 40 changer transitions 0/233 dead transitions. [2024-06-04 15:42:16,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 233 transitions, 2508 flow [2024-06-04 15:42:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:42:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:42:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:42:16,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-04 15:42:16,345 INFO L175 Difference]: Start difference. First operand has 164 places, 204 transitions, 2002 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:42:16,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 233 transitions, 2508 flow [2024-06-04 15:42:16,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 233 transitions, 2464 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-04 15:42:16,439 INFO L231 Difference]: Finished difference. Result has 171 places, 209 transitions, 2119 flow [2024-06-04 15:42:16,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2119, PETRI_PLACES=171, PETRI_TRANSITIONS=209} [2024-06-04 15:42:16,440 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-04 15:42:16,440 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 209 transitions, 2119 flow [2024-06-04 15:42:16,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:16,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:16,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:16,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:42:16,440 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:16,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:16,441 INFO L85 PathProgramCache]: Analyzing trace with hash 931511464, now seen corresponding path program 5 times [2024-06-04 15:42:16,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:16,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918437703] [2024-06-04 15:42:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:17,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:17,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918437703] [2024-06-04 15:42:17,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918437703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:17,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156172130] [2024-06-04 15:42:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:17,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:17,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:17,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 209 transitions, 2119 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:17,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:17,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:17,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:18,047 INFO L124 PetriNetUnfolderBase]: 1813/2828 cut-off events. [2024-06-04 15:42:18,048 INFO L125 PetriNetUnfolderBase]: For 95518/95518 co-relation queries the response was YES. [2024-06-04 15:42:18,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20143 conditions, 2828 events. 1813/2828 cut-off events. For 95518/95518 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14560 event pairs, 445 based on Foata normal form. 2/2819 useless extension candidates. Maximal degree in co-relation 20062. Up to 2479 conditions per place. [2024-06-04 15:42:18,070 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 168 selfloop transitions, 67 changer transitions 0/240 dead transitions. [2024-06-04 15:42:18,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 240 transitions, 2847 flow [2024-06-04 15:42:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 15:42:18,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-04 15:42:18,072 INFO L175 Difference]: Start difference. First operand has 171 places, 209 transitions, 2119 flow. Second operand 9 states and 175 transitions. [2024-06-04 15:42:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 240 transitions, 2847 flow [2024-06-04 15:42:18,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 2735 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:18,154 INFO L231 Difference]: Finished difference. Result has 175 places, 212 transitions, 2213 flow [2024-06-04 15:42:18,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2213, PETRI_PLACES=175, PETRI_TRANSITIONS=212} [2024-06-04 15:42:18,155 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-04 15:42:18,155 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 212 transitions, 2213 flow [2024-06-04 15:42:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:18,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:18,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:42:18,155 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)] === [2024-06-04 15:42:18,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2001733918, now seen corresponding path program 6 times [2024-06-04 15:42:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:18,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232309206] [2024-06-04 15:42:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232309206] [2024-06-04 15:42:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232309206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:19,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762701848] [2024-06-04 15:42:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:19,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:19,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:19,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 212 transitions, 2213 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:19,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:19,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:19,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:20,024 INFO L124 PetriNetUnfolderBase]: 1835/2872 cut-off events. [2024-06-04 15:42:20,024 INFO L125 PetriNetUnfolderBase]: For 101967/101967 co-relation queries the response was YES. [2024-06-04 15:42:20,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20860 conditions, 2872 events. 1835/2872 cut-off events. For 101967/101967 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14842 event pairs, 394 based on Foata normal form. 2/2868 useless extension candidates. Maximal degree in co-relation 20778. Up to 2599 conditions per place. [2024-06-04 15:42:20,053 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 191 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2024-06-04 15:42:20,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 2864 flow [2024-06-04 15:42:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 15:42:20,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:42:20,054 INFO L175 Difference]: Start difference. First operand has 175 places, 212 transitions, 2213 flow. Second operand 9 states and 171 transitions. [2024-06-04 15:42:20,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 2864 flow [2024-06-04 15:42:20,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 245 transitions, 2654 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:20,133 INFO L231 Difference]: Finished difference. Result has 177 places, 218 transitions, 2202 flow [2024-06-04 15:42:20,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2202, PETRI_PLACES=177, PETRI_TRANSITIONS=218} [2024-06-04 15:42:20,133 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 134 predicate places. [2024-06-04 15:42:20,133 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 218 transitions, 2202 flow [2024-06-04 15:42:20,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:20,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:20,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:20,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:42:20,134 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:20,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash 924845224, now seen corresponding path program 7 times [2024-06-04 15:42:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:20,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653006626] [2024-06-04 15:42:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:21,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:21,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653006626] [2024-06-04 15:42:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653006626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:21,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:21,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:21,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354820953] [2024-06-04 15:42:21,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:21,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:21,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:21,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 218 transitions, 2202 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:21,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:21,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:21,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:22,041 INFO L124 PetriNetUnfolderBase]: 1830/2865 cut-off events. [2024-06-04 15:42:22,041 INFO L125 PetriNetUnfolderBase]: For 105670/105670 co-relation queries the response was YES. [2024-06-04 15:42:22,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20736 conditions, 2865 events. 1830/2865 cut-off events. For 105670/105670 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14841 event pairs, 445 based on Foata normal form. 2/2861 useless extension candidates. Maximal degree in co-relation 20653. Up to 2592 conditions per place. [2024-06-04 15:42:22,066 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 190 selfloop transitions, 50 changer transitions 0/245 dead transitions. [2024-06-04 15:42:22,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 245 transitions, 2766 flow [2024-06-04 15:42:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 15:42:22,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-04 15:42:22,068 INFO L175 Difference]: Start difference. First operand has 177 places, 218 transitions, 2202 flow. Second operand 9 states and 170 transitions. [2024-06-04 15:42:22,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 245 transitions, 2766 flow [2024-06-04 15:42:22,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 245 transitions, 2602 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-04 15:42:22,161 INFO L231 Difference]: Finished difference. Result has 180 places, 218 transitions, 2146 flow [2024-06-04 15:42:22,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2146, PETRI_PLACES=180, PETRI_TRANSITIONS=218} [2024-06-04 15:42:22,161 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-04 15:42:22,162 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 218 transitions, 2146 flow [2024-06-04 15:42:22,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:22,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:22,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:42:22,162 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:22,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1153156504, now seen corresponding path program 8 times [2024-06-04 15:42:22,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:22,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30080578] [2024-06-04 15:42:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:22,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:23,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:23,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30080578] [2024-06-04 15:42:23,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30080578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:23,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:23,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:23,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693348117] [2024-06-04 15:42:23,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:23,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:23,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:23,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:23,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:23,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 218 transitions, 2146 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:23,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:23,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:23,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:23,741 INFO L124 PetriNetUnfolderBase]: 1841/2882 cut-off events. [2024-06-04 15:42:23,741 INFO L125 PetriNetUnfolderBase]: For 111389/111389 co-relation queries the response was YES. [2024-06-04 15:42:23,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20944 conditions, 2882 events. 1841/2882 cut-off events. For 111389/111389 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14943 event pairs, 445 based on Foata normal form. 2/2873 useless extension candidates. Maximal degree in co-relation 20860. Up to 2518 conditions per place. [2024-06-04 15:42:23,766 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 168 selfloop transitions, 74 changer transitions 0/247 dead transitions. [2024-06-04 15:42:23,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 247 transitions, 2772 flow [2024-06-04 15:42:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 15:42:23,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-04 15:42:23,768 INFO L175 Difference]: Start difference. First operand has 180 places, 218 transitions, 2146 flow. Second operand 9 states and 172 transitions. [2024-06-04 15:42:23,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 247 transitions, 2772 flow [2024-06-04 15:42:23,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 247 transitions, 2638 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 15:42:23,863 INFO L231 Difference]: Finished difference. Result has 180 places, 221 transitions, 2238 flow [2024-06-04 15:42:23,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2238, PETRI_PLACES=180, PETRI_TRANSITIONS=221} [2024-06-04 15:42:23,864 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-04 15:42:23,864 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 221 transitions, 2238 flow [2024-06-04 15:42:23,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:23,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:23,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:23,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:42:23,865 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:23,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1648652156, now seen corresponding path program 9 times [2024-06-04 15:42:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480610434] [2024-06-04 15:42:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480610434] [2024-06-04 15:42:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480610434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:24,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126102124] [2024-06-04 15:42:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:25,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:25,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 221 transitions, 2238 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:25,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:25,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:25,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:25,788 INFO L124 PetriNetUnfolderBase]: 1836/2879 cut-off events. [2024-06-04 15:42:25,789 INFO L125 PetriNetUnfolderBase]: For 118939/118939 co-relation queries the response was YES. [2024-06-04 15:42:25,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21305 conditions, 2879 events. 1836/2879 cut-off events. For 118939/118939 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15001 event pairs, 436 based on Foata normal form. 2/2875 useless extension candidates. Maximal degree in co-relation 21222. Up to 2484 conditions per place. [2024-06-04 15:42:25,812 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 166 selfloop transitions, 88 changer transitions 0/259 dead transitions. [2024-06-04 15:42:25,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 259 transitions, 2924 flow [2024-06-04 15:42:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:42:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:42:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-04 15:42:25,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-06-04 15:42:25,813 INFO L175 Difference]: Start difference. First operand has 180 places, 221 transitions, 2238 flow. Second operand 11 states and 206 transitions. [2024-06-04 15:42:25,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 259 transitions, 2924 flow [2024-06-04 15:42:25,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 259 transitions, 2718 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:25,931 INFO L231 Difference]: Finished difference. Result has 184 places, 224 transitions, 2296 flow [2024-06-04 15:42:25,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2296, PETRI_PLACES=184, PETRI_TRANSITIONS=224} [2024-06-04 15:42:25,931 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-04 15:42:25,931 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 224 transitions, 2296 flow [2024-06-04 15:42:25,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:25,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:25,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:25,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:42:25,932 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:25,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1699948418, now seen corresponding path program 2 times [2024-06-04 15:42:25,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:25,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315191809] [2024-06-04 15:42:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315191809] [2024-06-04 15:42:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315191809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541117014] [2024-06-04 15:42:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:26,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:26,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 224 transitions, 2296 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-04 15:42:26,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:26,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:26,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:27,193 INFO L124 PetriNetUnfolderBase]: 1856/2908 cut-off events. [2024-06-04 15:42:27,193 INFO L125 PetriNetUnfolderBase]: For 127694/127694 co-relation queries the response was YES. [2024-06-04 15:42:27,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21882 conditions, 2908 events. 1856/2908 cut-off events. For 127694/127694 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15175 event pairs, 439 based on Foata normal form. 4/2910 useless extension candidates. Maximal degree in co-relation 21798. Up to 2693 conditions per place. [2024-06-04 15:42:27,214 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 204 selfloop transitions, 32 changer transitions 0/241 dead transitions. [2024-06-04 15:42:27,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 241 transitions, 2864 flow [2024-06-04 15:42:27,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:42:27,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:42:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-04 15:42:27,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 15:42:27,215 INFO L175 Difference]: Start difference. First operand has 184 places, 224 transitions, 2296 flow. Second operand 5 states and 105 transitions. [2024-06-04 15:42:27,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 241 transitions, 2864 flow [2024-06-04 15:42:27,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 241 transitions, 2626 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-04 15:42:27,322 INFO L231 Difference]: Finished difference. Result has 180 places, 227 transitions, 2195 flow [2024-06-04 15:42:27,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2195, PETRI_PLACES=180, PETRI_TRANSITIONS=227} [2024-06-04 15:42:27,323 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-04 15:42:27,323 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 227 transitions, 2195 flow [2024-06-04 15:42:27,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-04 15:42:27,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:27,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:27,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:42:27,323 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)] === [2024-06-04 15:42:27,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash 412428716, now seen corresponding path program 3 times [2024-06-04 15:42:27,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:27,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967539307] [2024-06-04 15:42:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:27,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:27,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:27,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967539307] [2024-06-04 15:42:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967539307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:27,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:27,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569280734] [2024-06-04 15:42:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:27,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:27,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:27,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 227 transitions, 2195 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-04 15:42:27,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:27,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:27,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:28,603 INFO L124 PetriNetUnfolderBase]: 1844/2892 cut-off events. [2024-06-04 15:42:28,604 INFO L125 PetriNetUnfolderBase]: For 121936/121936 co-relation queries the response was YES. [2024-06-04 15:42:28,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21144 conditions, 2892 events. 1844/2892 cut-off events. For 121936/121936 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15037 event pairs, 446 based on Foata normal form. 4/2894 useless extension candidates. Maximal degree in co-relation 21059. Up to 2645 conditions per place. [2024-06-04 15:42:28,630 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 201 selfloop transitions, 38 changer transitions 0/244 dead transitions. [2024-06-04 15:42:28,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 244 transitions, 2751 flow [2024-06-04 15:42:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:42:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:42:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-04 15:42:28,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-04 15:42:28,632 INFO L175 Difference]: Start difference. First operand has 180 places, 227 transitions, 2195 flow. Second operand 6 states and 121 transitions. [2024-06-04 15:42:28,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 244 transitions, 2751 flow [2024-06-04 15:42:28,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 244 transitions, 2676 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-04 15:42:28,741 INFO L231 Difference]: Finished difference. Result has 183 places, 227 transitions, 2208 flow [2024-06-04 15:42:28,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2208, PETRI_PLACES=183, PETRI_TRANSITIONS=227} [2024-06-04 15:42:28,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-06-04 15:42:28,742 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 227 transitions, 2208 flow [2024-06-04 15:42:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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) [2024-06-04 15:42:28,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:28,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:28,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:42:28,742 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:28,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash 191714854, now seen corresponding path program 1 times [2024-06-04 15:42:28,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:28,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173329245] [2024-06-04 15:42:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:28,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173329245] [2024-06-04 15:42:29,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173329245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:29,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:29,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316567674] [2024-06-04 15:42:29,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:29,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:42:29,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 227 transitions, 2208 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:29,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:29,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:42:29,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:29,903 INFO L124 PetriNetUnfolderBase]: 1768/2827 cut-off events. [2024-06-04 15:42:29,903 INFO L125 PetriNetUnfolderBase]: For 127523/127525 co-relation queries the response was YES. [2024-06-04 15:42:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21041 conditions, 2827 events. 1768/2827 cut-off events. For 127523/127525 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15105 event pairs, 516 based on Foata normal form. 3/2818 useless extension candidates. Maximal degree in co-relation 20955. Up to 2554 conditions per place. [2024-06-04 15:42:29,928 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 205 selfloop transitions, 25 changer transitions 0/252 dead transitions. [2024-06-04 15:42:29,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 252 transitions, 2858 flow [2024-06-04 15:42:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:42:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:42:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 15:42:29,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-04 15:42:29,929 INFO L175 Difference]: Start difference. First operand has 183 places, 227 transitions, 2208 flow. Second operand 7 states and 139 transitions. [2024-06-04 15:42:29,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 252 transitions, 2858 flow [2024-06-04 15:42:30,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 252 transitions, 2767 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:30,032 INFO L231 Difference]: Finished difference. Result has 185 places, 233 transitions, 2241 flow [2024-06-04 15:42:30,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2241, PETRI_PLACES=185, PETRI_TRANSITIONS=233} [2024-06-04 15:42:30,033 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-04 15:42:30,033 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 233 transitions, 2241 flow [2024-06-04 15:42:30,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:30,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:30,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:30,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:42:30,033 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:30,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1664863834, now seen corresponding path program 2 times [2024-06-04 15:42:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:30,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951301439] [2024-06-04 15:42:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:30,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:30,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951301439] [2024-06-04 15:42:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951301439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:30,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:30,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772583815] [2024-06-04 15:42:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:30,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:30,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:42:30,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 233 transitions, 2241 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:30,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:30,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:42:30,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:31,312 INFO L124 PetriNetUnfolderBase]: 1798/2865 cut-off events. [2024-06-04 15:42:31,312 INFO L125 PetriNetUnfolderBase]: For 129401/129403 co-relation queries the response was YES. [2024-06-04 15:42:31,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21402 conditions, 2865 events. 1798/2865 cut-off events. For 129401/129403 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15258 event pairs, 517 based on Foata normal form. 3/2856 useless extension candidates. Maximal degree in co-relation 21316. Up to 2606 conditions per place. [2024-06-04 15:42:31,337 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 209 selfloop transitions, 25 changer transitions 0/256 dead transitions. [2024-06-04 15:42:31,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 256 transitions, 2837 flow [2024-06-04 15:42:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:42:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:42:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 15:42:31,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-04 15:42:31,338 INFO L175 Difference]: Start difference. First operand has 185 places, 233 transitions, 2241 flow. Second operand 7 states and 134 transitions. [2024-06-04 15:42:31,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 256 transitions, 2837 flow [2024-06-04 15:42:31,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 2784 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-04 15:42:31,447 INFO L231 Difference]: Finished difference. Result has 189 places, 241 transitions, 2333 flow [2024-06-04 15:42:31,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2333, PETRI_PLACES=189, PETRI_TRANSITIONS=241} [2024-06-04 15:42:31,447 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-04 15:42:31,447 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 241 transitions, 2333 flow [2024-06-04 15:42:31,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:31,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:31,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:31,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:42:31,448 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:31,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 392088004, now seen corresponding path program 3 times [2024-06-04 15:42:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015871949] [2024-06-04 15:42:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:31,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015871949] [2024-06-04 15:42:32,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015871949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:32,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:32,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:32,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515980735] [2024-06-04 15:42:32,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:32,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:32,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:32,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:42:32,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 241 transitions, 2333 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:42:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:32,737 INFO L124 PetriNetUnfolderBase]: 1789/2853 cut-off events. [2024-06-04 15:42:32,737 INFO L125 PetriNetUnfolderBase]: For 131979/131981 co-relation queries the response was YES. [2024-06-04 15:42:32,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21421 conditions, 2853 events. 1789/2853 cut-off events. For 131979/131981 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15218 event pairs, 516 based on Foata normal form. 3/2844 useless extension candidates. Maximal degree in co-relation 21333. Up to 2591 conditions per place. [2024-06-04 15:42:32,763 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 212 selfloop transitions, 23 changer transitions 0/257 dead transitions. [2024-06-04 15:42:32,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 257 transitions, 2853 flow [2024-06-04 15:42:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:42:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:42:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 15:42:32,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-04 15:42:32,764 INFO L175 Difference]: Start difference. First operand has 189 places, 241 transitions, 2333 flow. Second operand 6 states and 122 transitions. [2024-06-04 15:42:32,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 257 transitions, 2853 flow [2024-06-04 15:42:32,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 257 transitions, 2768 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-04 15:42:32,889 INFO L231 Difference]: Finished difference. Result has 191 places, 241 transitions, 2305 flow [2024-06-04 15:42:32,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2305, PETRI_PLACES=191, PETRI_TRANSITIONS=241} [2024-06-04 15:42:32,891 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-04 15:42:32,892 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 241 transitions, 2305 flow [2024-06-04 15:42:32,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:32,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:32,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:32,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:42:32,893 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:32,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash 392334268, now seen corresponding path program 1 times [2024-06-04 15:42:32,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:32,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163606734] [2024-06-04 15:42:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:33,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163606734] [2024-06-04 15:42:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163606734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:33,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:42:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22524393] [2024-06-04 15:42:33,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:42:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:42:33,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:42:33,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:33,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 241 transitions, 2305 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:33,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:33,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:33,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:34,173 INFO L124 PetriNetUnfolderBase]: 1883/2945 cut-off events. [2024-06-04 15:42:34,173 INFO L125 PetriNetUnfolderBase]: For 132105/132105 co-relation queries the response was YES. [2024-06-04 15:42:34,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21881 conditions, 2945 events. 1883/2945 cut-off events. For 132105/132105 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15198 event pairs, 578 based on Foata normal form. 2/2945 useless extension candidates. Maximal degree in co-relation 21792. Up to 2813 conditions per place. [2024-06-04 15:42:34,199 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 233 selfloop transitions, 13 changer transitions 0/251 dead transitions. [2024-06-04 15:42:34,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 251 transitions, 2843 flow [2024-06-04 15:42:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:42:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:42:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-04 15:42:34,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:42:34,200 INFO L175 Difference]: Start difference. First operand has 191 places, 241 transitions, 2305 flow. Second operand 5 states and 95 transitions. [2024-06-04 15:42:34,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 251 transitions, 2843 flow [2024-06-04 15:42:34,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 251 transitions, 2786 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:34,336 INFO L231 Difference]: Finished difference. Result has 191 places, 243 transitions, 2307 flow [2024-06-04 15:42:34,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2307, PETRI_PLACES=191, PETRI_TRANSITIONS=243} [2024-06-04 15:42:34,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-04 15:42:34,337 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 243 transitions, 2307 flow [2024-06-04 15:42:34,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:34,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:34,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:34,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:42:34,337 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)] === [2024-06-04 15:42:34,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash -454438995, now seen corresponding path program 1 times [2024-06-04 15:42:34,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:34,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694098928] [2024-06-04 15:42:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:35,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694098928] [2024-06-04 15:42:35,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694098928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:35,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:35,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745947256] [2024-06-04 15:42:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:35,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:35,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 243 transitions, 2307 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:35,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:35,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:35,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:35,958 INFO L124 PetriNetUnfolderBase]: 1900/2972 cut-off events. [2024-06-04 15:42:35,958 INFO L125 PetriNetUnfolderBase]: For 140589/140589 co-relation queries the response was YES. [2024-06-04 15:42:35,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22228 conditions, 2972 events. 1900/2972 cut-off events. For 140589/140589 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15426 event pairs, 430 based on Foata normal form. 4/2974 useless extension candidates. Maximal degree in co-relation 22138. Up to 2767 conditions per place. [2024-06-04 15:42:35,990 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 242 selfloop transitions, 28 changer transitions 0/275 dead transitions. [2024-06-04 15:42:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 275 transitions, 2973 flow [2024-06-04 15:42:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:42:35,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-04 15:42:35,991 INFO L175 Difference]: Start difference. First operand has 191 places, 243 transitions, 2307 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:42:35,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 275 transitions, 2973 flow [2024-06-04 15:42:36,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 275 transitions, 2930 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-04 15:42:36,122 INFO L231 Difference]: Finished difference. Result has 197 places, 245 transitions, 2365 flow [2024-06-04 15:42:36,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2365, PETRI_PLACES=197, PETRI_TRANSITIONS=245} [2024-06-04 15:42:36,122 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-04 15:42:36,122 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 245 transitions, 2365 flow [2024-06-04 15:42:36,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:36,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:36,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:36,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:42:36,123 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash -454586865, now seen corresponding path program 2 times [2024-06-04 15:42:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:36,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131545262] [2024-06-04 15:42:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131545262] [2024-06-04 15:42:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131545262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:37,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:37,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041153059] [2024-06-04 15:42:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:37,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:37,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:37,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:37,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 245 transitions, 2365 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:37,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:37,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:37,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:37,808 INFO L124 PetriNetUnfolderBase]: 1942/3038 cut-off events. [2024-06-04 15:42:37,808 INFO L125 PetriNetUnfolderBase]: For 151196/151196 co-relation queries the response was YES. [2024-06-04 15:42:37,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23132 conditions, 3038 events. 1942/3038 cut-off events. For 151196/151196 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15887 event pairs, 426 based on Foata normal form. 4/3040 useless extension candidates. Maximal degree in co-relation 23041. Up to 2768 conditions per place. [2024-06-04 15:42:37,836 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 246 selfloop transitions, 33 changer transitions 0/284 dead transitions. [2024-06-04 15:42:37,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 284 transitions, 3281 flow [2024-06-04 15:42:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 15:42:37,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-04 15:42:37,838 INFO L175 Difference]: Start difference. First operand has 197 places, 245 transitions, 2365 flow. Second operand 9 states and 172 transitions. [2024-06-04 15:42:37,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 284 transitions, 3281 flow [2024-06-04 15:42:37,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 284 transitions, 3200 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:37,979 INFO L231 Difference]: Finished difference. Result has 200 places, 251 transitions, 2486 flow [2024-06-04 15:42:37,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2486, PETRI_PLACES=200, PETRI_TRANSITIONS=251} [2024-06-04 15:42:37,979 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 157 predicate places. [2024-06-04 15:42:37,980 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 251 transitions, 2486 flow [2024-06-04 15:42:37,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:37,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:37,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:37,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:42:37,980 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:37,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash -255137205, now seen corresponding path program 3 times [2024-06-04 15:42:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:37,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557497573] [2024-06-04 15:42:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:37,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557497573] [2024-06-04 15:42:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557497573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:38,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:38,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:38,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212486776] [2024-06-04 15:42:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:38,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:38,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:38,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:38,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:38,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 251 transitions, 2486 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:38,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:38,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:38,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:39,618 INFO L124 PetriNetUnfolderBase]: 1934/3026 cut-off events. [2024-06-04 15:42:39,618 INFO L125 PetriNetUnfolderBase]: For 155895/155895 co-relation queries the response was YES. [2024-06-04 15:42:39,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23274 conditions, 3026 events. 1934/3026 cut-off events. For 155895/155895 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15785 event pairs, 433 based on Foata normal form. 4/3028 useless extension candidates. Maximal degree in co-relation 23181. Up to 2821 conditions per place. [2024-06-04 15:42:39,648 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 248 selfloop transitions, 28 changer transitions 0/281 dead transitions. [2024-06-04 15:42:39,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 281 transitions, 3130 flow [2024-06-04 15:42:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:42:39,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-04 15:42:39,649 INFO L175 Difference]: Start difference. First operand has 200 places, 251 transitions, 2486 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:42:39,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 281 transitions, 3130 flow [2024-06-04 15:42:39,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 281 transitions, 3009 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:39,790 INFO L231 Difference]: Finished difference. Result has 204 places, 251 transitions, 2428 flow [2024-06-04 15:42:39,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2428, PETRI_PLACES=204, PETRI_TRANSITIONS=251} [2024-06-04 15:42:39,790 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-04 15:42:39,791 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 251 transitions, 2428 flow [2024-06-04 15:42:39,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:39,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:39,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:39,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:42:39,791 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:39,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash -402480611, now seen corresponding path program 4 times [2024-06-04 15:42:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47528665] [2024-06-04 15:42:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:40,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:40,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47528665] [2024-06-04 15:42:40,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47528665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:40,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:40,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:40,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145526787] [2024-06-04 15:42:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:40,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:40,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:40,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:40,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 251 transitions, 2428 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:40,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:40,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:40,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:41,417 INFO L124 PetriNetUnfolderBase]: 1951/3053 cut-off events. [2024-06-04 15:42:41,418 INFO L125 PetriNetUnfolderBase]: For 162423/162423 co-relation queries the response was YES. [2024-06-04 15:42:41,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23483 conditions, 3053 events. 1951/3053 cut-off events. For 162423/162423 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15957 event pairs, 310 based on Foata normal form. 4/3055 useless extension candidates. Maximal degree in co-relation 23388. Up to 2797 conditions per place. [2024-06-04 15:42:41,445 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 259 selfloop transitions, 27 changer transitions 0/291 dead transitions. [2024-06-04 15:42:41,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 291 transitions, 3218 flow [2024-06-04 15:42:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 15:42:41,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-04 15:42:41,447 INFO L175 Difference]: Start difference. First operand has 204 places, 251 transitions, 2428 flow. Second operand 9 states and 170 transitions. [2024-06-04 15:42:41,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 291 transitions, 3218 flow [2024-06-04 15:42:41,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 291 transitions, 3161 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:41,636 INFO L231 Difference]: Finished difference. Result has 208 places, 257 transitions, 2564 flow [2024-06-04 15:42:41,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2564, PETRI_PLACES=208, PETRI_TRANSITIONS=257} [2024-06-04 15:42:41,637 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 165 predicate places. [2024-06-04 15:42:41,637 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 257 transitions, 2564 flow [2024-06-04 15:42:41,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:41,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:41,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:41,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:42:41,637 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:41,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1256763385, now seen corresponding path program 5 times [2024-06-04 15:42:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433162717] [2024-06-04 15:42:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433162717] [2024-06-04 15:42:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433162717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:42,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:42,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:42,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642078819] [2024-06-04 15:42:42,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:42,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:42,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:42,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 257 transitions, 2564 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:42,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:42,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:42,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:43,355 INFO L124 PetriNetUnfolderBase]: 1993/3119 cut-off events. [2024-06-04 15:42:43,355 INFO L125 PetriNetUnfolderBase]: For 175843/175843 co-relation queries the response was YES. [2024-06-04 15:42:43,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 3119 events. 1993/3119 cut-off events. For 175843/175843 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16422 event pairs, 396 based on Foata normal form. 4/3121 useless extension candidates. Maximal degree in co-relation 24393. Up to 2835 conditions per place. [2024-06-04 15:42:43,384 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 256 selfloop transitions, 36 changer transitions 0/297 dead transitions. [2024-06-04 15:42:43,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 297 transitions, 3516 flow [2024-06-04 15:42:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 15:42:43,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-04 15:42:43,385 INFO L175 Difference]: Start difference. First operand has 208 places, 257 transitions, 2564 flow. Second operand 9 states and 174 transitions. [2024-06-04 15:42:43,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 297 transitions, 3516 flow [2024-06-04 15:42:43,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 297 transitions, 3392 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-04 15:42:43,564 INFO L231 Difference]: Finished difference. Result has 214 places, 262 transitions, 2636 flow [2024-06-04 15:42:43,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2636, PETRI_PLACES=214, PETRI_TRANSITIONS=262} [2024-06-04 15:42:43,565 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-06-04 15:42:43,565 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 262 transitions, 2636 flow [2024-06-04 15:42:43,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:43,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:43,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:42:43,566 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:43,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1256911255, now seen corresponding path program 6 times [2024-06-04 15:42:43,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:43,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349955642] [2024-06-04 15:42:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:43,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:44,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:44,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349955642] [2024-06-04 15:42:44,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349955642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:44,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:44,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071063490] [2024-06-04 15:42:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:44,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:44,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:44,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:44,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 262 transitions, 2636 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:44,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:44,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:44,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:45,272 INFO L124 PetriNetUnfolderBase]: 1985/3107 cut-off events. [2024-06-04 15:42:45,273 INFO L125 PetriNetUnfolderBase]: For 178722/178722 co-relation queries the response was YES. [2024-06-04 15:42:45,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24498 conditions, 3107 events. 1985/3107 cut-off events. For 178722/178722 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16310 event pairs, 406 based on Foata normal form. 4/3109 useless extension candidates. Maximal degree in co-relation 24397. Up to 2875 conditions per place. [2024-06-04 15:42:45,305 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 255 selfloop transitions, 35 changer transitions 0/295 dead transitions. [2024-06-04 15:42:45,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 295 transitions, 3349 flow [2024-06-04 15:42:45,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 15:42:45,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-04 15:42:45,306 INFO L175 Difference]: Start difference. First operand has 214 places, 262 transitions, 2636 flow. Second operand 9 states and 170 transitions. [2024-06-04 15:42:45,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 295 transitions, 3349 flow [2024-06-04 15:42:45,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 295 transitions, 3188 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-04 15:42:45,513 INFO L231 Difference]: Finished difference. Result has 218 places, 263 transitions, 2590 flow [2024-06-04 15:42:45,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2590, PETRI_PLACES=218, PETRI_TRANSITIONS=263} [2024-06-04 15:42:45,514 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-04 15:42:45,514 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 263 transitions, 2590 flow [2024-06-04 15:42:45,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:45,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:45,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:45,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:42:45,514 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:45,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1375822039, now seen corresponding path program 1 times [2024-06-04 15:42:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:45,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571085985] [2024-06-04 15:42:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:46,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:46,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571085985] [2024-06-04 15:42:46,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571085985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:46,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:46,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189357578] [2024-06-04 15:42:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:46,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:46,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:46,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:46,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 263 transitions, 2590 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:46,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:46,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:46,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:47,603 INFO L124 PetriNetUnfolderBase]: 2043/3205 cut-off events. [2024-06-04 15:42:47,603 INFO L125 PetriNetUnfolderBase]: For 196855/196855 co-relation queries the response was YES. [2024-06-04 15:42:47,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25058 conditions, 3205 events. 2043/3205 cut-off events. For 196855/196855 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16982 event pairs, 413 based on Foata normal form. 16/3219 useless extension candidates. Maximal degree in co-relation 24955. Up to 2917 conditions per place. [2024-06-04 15:42:47,634 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 266 selfloop transitions, 30 changer transitions 0/301 dead transitions. [2024-06-04 15:42:47,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 301 transitions, 3356 flow [2024-06-04 15:42:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-04 15:42:47,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-04 15:42:47,636 INFO L175 Difference]: Start difference. First operand has 218 places, 263 transitions, 2590 flow. Second operand 10 states and 188 transitions. [2024-06-04 15:42:47,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 301 transitions, 3356 flow [2024-06-04 15:42:47,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 301 transitions, 3290 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:47,846 INFO L231 Difference]: Finished difference. Result has 221 places, 264 transitions, 2619 flow [2024-06-04 15:42:47,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2619, PETRI_PLACES=221, PETRI_TRANSITIONS=264} [2024-06-04 15:42:47,847 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-04 15:42:47,847 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 264 transitions, 2619 flow [2024-06-04 15:42:47,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:47,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:47,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:42:47,847 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:47,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash 4445593, now seen corresponding path program 2 times [2024-06-04 15:42:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156074923] [2024-06-04 15:42:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156074923] [2024-06-04 15:42:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156074923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:48,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:48,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199560059] [2024-06-04 15:42:48,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:49,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:49,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 264 transitions, 2619 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:49,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:49,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:49,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:49,912 INFO L124 PetriNetUnfolderBase]: 2101/3303 cut-off events. [2024-06-04 15:42:49,912 INFO L125 PetriNetUnfolderBase]: For 207434/207434 co-relation queries the response was YES. [2024-06-04 15:42:49,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25882 conditions, 3303 events. 2101/3303 cut-off events. For 207434/207434 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17764 event pairs, 424 based on Foata normal form. 16/3317 useless extension candidates. Maximal degree in co-relation 25778. Up to 3015 conditions per place. [2024-06-04 15:42:49,940 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 267 selfloop transitions, 30 changer transitions 0/302 dead transitions. [2024-06-04 15:42:49,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 302 transitions, 3389 flow [2024-06-04 15:42:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-04 15:42:49,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-04 15:42:49,942 INFO L175 Difference]: Start difference. First operand has 221 places, 264 transitions, 2619 flow. Second operand 10 states and 188 transitions. [2024-06-04 15:42:49,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 302 transitions, 3389 flow [2024-06-04 15:42:50,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 302 transitions, 3320 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:50,187 INFO L231 Difference]: Finished difference. Result has 223 places, 265 transitions, 2647 flow [2024-06-04 15:42:50,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2647, PETRI_PLACES=223, PETRI_TRANSITIONS=265} [2024-06-04 15:42:50,187 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-04 15:42:50,187 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 265 transitions, 2647 flow [2024-06-04 15:42:50,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:50,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:50,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:50,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:42:50,188 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)] === [2024-06-04 15:42:50,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash 11797243, now seen corresponding path program 3 times [2024-06-04 15:42:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:50,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110977967] [2024-06-04 15:42:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:50,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:51,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110977967] [2024-06-04 15:42:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110977967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:51,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105620640] [2024-06-04 15:42:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:51,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:51,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:51,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 265 transitions, 2647 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:51,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:51,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:52,201 INFO L124 PetriNetUnfolderBase]: 2159/3405 cut-off events. [2024-06-04 15:42:52,201 INFO L125 PetriNetUnfolderBase]: For 217412/217412 co-relation queries the response was YES. [2024-06-04 15:42:52,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26682 conditions, 3405 events. 2159/3405 cut-off events. For 217412/217412 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18531 event pairs, 438 based on Foata normal form. 16/3419 useless extension candidates. Maximal degree in co-relation 26577. Up to 3086 conditions per place. [2024-06-04 15:42:52,243 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 38 changer transitions 0/303 dead transitions. [2024-06-04 15:42:52,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 303 transitions, 3425 flow [2024-06-04 15:42:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-04 15:42:52,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 15:42:52,244 INFO L175 Difference]: Start difference. First operand has 223 places, 265 transitions, 2647 flow. Second operand 10 states and 189 transitions. [2024-06-04 15:42:52,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 303 transitions, 3425 flow [2024-06-04 15:42:52,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 303 transitions, 3354 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:52,513 INFO L231 Difference]: Finished difference. Result has 225 places, 266 transitions, 2695 flow [2024-06-04 15:42:52,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2695, PETRI_PLACES=225, PETRI_TRANSITIONS=266} [2024-06-04 15:42:52,514 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-04 15:42:52,514 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 266 transitions, 2695 flow [2024-06-04 15:42:52,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:52,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:52,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:52,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:42:52,514 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:52,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:52,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1582742389, now seen corresponding path program 4 times [2024-06-04 15:42:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:52,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382518721] [2024-06-04 15:42:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:52,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382518721] [2024-06-04 15:42:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382518721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:53,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837150291] [2024-06-04 15:42:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:53,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:53,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:53,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 266 transitions, 2695 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:53,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:53,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:54,666 INFO L124 PetriNetUnfolderBase]: 2261/3585 cut-off events. [2024-06-04 15:42:54,666 INFO L125 PetriNetUnfolderBase]: For 236179/236179 co-relation queries the response was YES. [2024-06-04 15:42:54,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28435 conditions, 3585 events. 2261/3585 cut-off events. For 236179/236179 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19822 event pairs, 458 based on Foata normal form. 12/3595 useless extension candidates. Maximal degree in co-relation 28329. Up to 2848 conditions per place. [2024-06-04 15:42:54,697 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 45 changer transitions 0/310 dead transitions. [2024-06-04 15:42:54,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 310 transitions, 3733 flow [2024-06-04 15:42:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-04 15:42:54,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-04 15:42:54,698 INFO L175 Difference]: Start difference. First operand has 225 places, 266 transitions, 2695 flow. Second operand 10 states and 194 transitions. [2024-06-04 15:42:54,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 310 transitions, 3733 flow [2024-06-04 15:42:54,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 310 transitions, 3644 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:54,941 INFO L231 Difference]: Finished difference. Result has 228 places, 268 transitions, 2789 flow [2024-06-04 15:42:54,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2789, PETRI_PLACES=228, PETRI_TRANSITIONS=268} [2024-06-04 15:42:54,941 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 185 predicate places. [2024-06-04 15:42:54,941 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 268 transitions, 2789 flow [2024-06-04 15:42:54,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:54,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:54,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:54,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:42:54,942 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:54,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1256917207, now seen corresponding path program 5 times [2024-06-04 15:42:54,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:54,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288215358] [2024-06-04 15:42:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:54,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:56,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:56,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288215358] [2024-06-04 15:42:56,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288215358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:56,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:56,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:42:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795201109] [2024-06-04 15:42:56,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:42:56,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:42:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:42:56,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:56,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 268 transitions, 2789 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:56,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:56,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:56,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:56,997 INFO L124 PetriNetUnfolderBase]: 2319/3693 cut-off events. [2024-06-04 15:42:56,997 INFO L125 PetriNetUnfolderBase]: For 252512/252512 co-relation queries the response was YES. [2024-06-04 15:42:57,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29451 conditions, 3693 events. 2319/3693 cut-off events. For 252512/252512 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 20721 event pairs, 486 based on Foata normal form. 16/3707 useless extension candidates. Maximal degree in co-relation 29343. Up to 3358 conditions per place. [2024-06-04 15:42:57,032 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 266 selfloop transitions, 37 changer transitions 0/308 dead transitions. [2024-06-04 15:42:57,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 308 transitions, 3587 flow [2024-06-04 15:42:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:42:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:42:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-04 15:42:57,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 15:42:57,033 INFO L175 Difference]: Start difference. First operand has 228 places, 268 transitions, 2789 flow. Second operand 10 states and 189 transitions. [2024-06-04 15:42:57,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 308 transitions, 3587 flow [2024-06-04 15:42:57,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 308 transitions, 3492 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 15:42:57,339 INFO L231 Difference]: Finished difference. Result has 231 places, 269 transitions, 2815 flow [2024-06-04 15:42:57,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2815, PETRI_PLACES=231, PETRI_TRANSITIONS=269} [2024-06-04 15:42:57,340 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-04 15:42:57,340 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 269 transitions, 2815 flow [2024-06-04 15:42:57,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:57,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:57,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:57,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:42:57,341 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:57,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1195272531, now seen corresponding path program 7 times [2024-06-04 15:42:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051929709] [2024-06-04 15:42:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:42:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:42:58,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:42:58,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051929709] [2024-06-04 15:42:58,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051929709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:42:58,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:42:58,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:42:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635410732] [2024-06-04 15:42:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:42:58,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:42:58,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:42:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:42:58,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:42:58,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:42:58,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 269 transitions, 2815 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:58,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:42:58,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:42:58,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:42:59,056 INFO L124 PetriNetUnfolderBase]: 2336/3717 cut-off events. [2024-06-04 15:42:59,056 INFO L125 PetriNetUnfolderBase]: For 248559/248559 co-relation queries the response was YES. [2024-06-04 15:42:59,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29725 conditions, 3717 events. 2336/3717 cut-off events. For 248559/248559 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20845 event pairs, 493 based on Foata normal form. 4/3715 useless extension candidates. Maximal degree in co-relation 29616. Up to 3414 conditions per place. [2024-06-04 15:42:59,093 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 246 selfloop transitions, 48 changer transitions 0/299 dead transitions. [2024-06-04 15:42:59,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 299 transitions, 3541 flow [2024-06-04 15:42:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:42:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:42:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 15:42:59,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:42:59,094 INFO L175 Difference]: Start difference. First operand has 231 places, 269 transitions, 2815 flow. Second operand 9 states and 171 transitions. [2024-06-04 15:42:59,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 299 transitions, 3541 flow [2024-06-04 15:42:59,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 299 transitions, 3450 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:42:59,381 INFO L231 Difference]: Finished difference. Result has 232 places, 271 transitions, 2883 flow [2024-06-04 15:42:59,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2883, PETRI_PLACES=232, PETRI_TRANSITIONS=271} [2024-06-04 15:42:59,381 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-04 15:42:59,381 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 271 transitions, 2883 flow [2024-06-04 15:42:59,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:42:59,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:42:59,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:42:59,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:42:59,382 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:42:59,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:42:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1394718471, now seen corresponding path program 8 times [2024-06-04 15:42:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:42:59,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326074055] [2024-06-04 15:42:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:42:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:42:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326074055] [2024-06-04 15:43:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326074055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:00,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418428306] [2024-06-04 15:43:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:00,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:00,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:00,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 271 transitions, 2883 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:00,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:00,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:00,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:01,251 INFO L124 PetriNetUnfolderBase]: 2353/3734 cut-off events. [2024-06-04 15:43:01,251 INFO L125 PetriNetUnfolderBase]: For 258001/258001 co-relation queries the response was YES. [2024-06-04 15:43:01,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30134 conditions, 3734 events. 2353/3734 cut-off events. For 258001/258001 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20925 event pairs, 488 based on Foata normal form. 4/3732 useless extension candidates. Maximal degree in co-relation 30024. Up to 3441 conditions per place. [2024-06-04 15:43:01,286 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 247 selfloop transitions, 49 changer transitions 0/301 dead transitions. [2024-06-04 15:43:01,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 301 transitions, 3617 flow [2024-06-04 15:43:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 15:43:01,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-04 15:43:01,287 INFO L175 Difference]: Start difference. First operand has 232 places, 271 transitions, 2883 flow. Second operand 9 states and 170 transitions. [2024-06-04 15:43:01,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 301 transitions, 3617 flow [2024-06-04 15:43:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 301 transitions, 3478 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:43:01,596 INFO L231 Difference]: Finished difference. Result has 234 places, 273 transitions, 2909 flow [2024-06-04 15:43:01,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2909, PETRI_PLACES=234, PETRI_TRANSITIONS=273} [2024-06-04 15:43:01,597 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 191 predicate places. [2024-06-04 15:43:01,597 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 273 transitions, 2909 flow [2024-06-04 15:43:01,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:01,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:01,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:01,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:43:01,597 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)] === [2024-06-04 15:43:01,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash 205265769, now seen corresponding path program 9 times [2024-06-04 15:43:01,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641642046] [2024-06-04 15:43:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:02,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:02,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641642046] [2024-06-04 15:43:02,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641642046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:02,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:02,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:02,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742712975] [2024-06-04 15:43:02,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:02,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:02,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:02,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:02,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:02,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:02,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 273 transitions, 2909 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:02,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:02,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:02,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:03,329 INFO L124 PetriNetUnfolderBase]: 2345/3732 cut-off events. [2024-06-04 15:43:03,330 INFO L125 PetriNetUnfolderBase]: For 262261/262261 co-relation queries the response was YES. [2024-06-04 15:43:03,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30033 conditions, 3732 events. 2345/3732 cut-off events. For 262261/262261 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21010 event pairs, 491 based on Foata normal form. 4/3730 useless extension candidates. Maximal degree in co-relation 29922. Up to 3429 conditions per place. [2024-06-04 15:43:03,367 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 248 selfloop transitions, 50 changer transitions 0/303 dead transitions. [2024-06-04 15:43:03,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 303 transitions, 3651 flow [2024-06-04 15:43:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:43:03,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-04 15:43:03,368 INFO L175 Difference]: Start difference. First operand has 234 places, 273 transitions, 2909 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:43:03,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 303 transitions, 3651 flow [2024-06-04 15:43:03,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 303 transitions, 3506 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-04 15:43:03,726 INFO L231 Difference]: Finished difference. Result has 236 places, 275 transitions, 2935 flow [2024-06-04 15:43:03,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2935, PETRI_PLACES=236, PETRI_TRANSITIONS=275} [2024-06-04 15:43:03,727 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-06-04 15:43:03,727 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 275 transitions, 2935 flow [2024-06-04 15:43:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:03,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:03,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:43:03,727 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)] === [2024-06-04 15:43:03,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1724754461, now seen corresponding path program 10 times [2024-06-04 15:43:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:03,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211600] [2024-06-04 15:43:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:03,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:04,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:04,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211600] [2024-06-04 15:43:04,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:04,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:04,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:43:04,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481640905] [2024-06-04 15:43:04,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:04,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:43:04,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:04,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:43:04,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:43:04,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:04,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 275 transitions, 2935 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:04,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:04,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:04,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:05,591 INFO L124 PetriNetUnfolderBase]: 2337/3720 cut-off events. [2024-06-04 15:43:05,591 INFO L125 PetriNetUnfolderBase]: For 266185/266185 co-relation queries the response was YES. [2024-06-04 15:43:05,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29872 conditions, 3720 events. 2337/3720 cut-off events. For 266185/266185 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20881 event pairs, 482 based on Foata normal form. 4/3718 useless extension candidates. Maximal degree in co-relation 29760. Up to 3340 conditions per place. [2024-06-04 15:43:05,630 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 247 selfloop transitions, 56 changer transitions 0/308 dead transitions. [2024-06-04 15:43:05,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 308 transitions, 3739 flow [2024-06-04 15:43:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 15:43:05,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:43:05,631 INFO L175 Difference]: Start difference. First operand has 236 places, 275 transitions, 2935 flow. Second operand 9 states and 171 transitions. [2024-06-04 15:43:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 308 transitions, 3739 flow [2024-06-04 15:43:05,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 308 transitions, 3588 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-04 15:43:05,982 INFO L231 Difference]: Finished difference. Result has 239 places, 279 transitions, 3031 flow [2024-06-04 15:43:05,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3031, PETRI_PLACES=239, PETRI_TRANSITIONS=279} [2024-06-04 15:43:05,982 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-06-04 15:43:05,983 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 279 transitions, 3031 flow [2024-06-04 15:43:05,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:05,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:05,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:05,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:43:05,983 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)] === [2024-06-04 15:43:05,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1730479913, now seen corresponding path program 6 times [2024-06-04 15:43:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:05,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997983704] [2024-06-04 15:43:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:07,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:07,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997983704] [2024-06-04 15:43:07,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997983704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:07,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:07,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111288305] [2024-06-04 15:43:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:07,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 279 transitions, 3031 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:07,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:08,203 INFO L124 PetriNetUnfolderBase]: 2550/4085 cut-off events. [2024-06-04 15:43:08,203 INFO L125 PetriNetUnfolderBase]: For 334625/334625 co-relation queries the response was YES. [2024-06-04 15:43:08,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34313 conditions, 4085 events. 2550/4085 cut-off events. For 334625/334625 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23665 event pairs, 541 based on Foata normal form. 12/4091 useless extension candidates. Maximal degree in co-relation 34199. Up to 3345 conditions per place. [2024-06-04 15:43:08,247 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 254 selfloop transitions, 63 changer transitions 0/322 dead transitions. [2024-06-04 15:43:08,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 322 transitions, 4167 flow [2024-06-04 15:43:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 15:43:08,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-04 15:43:08,248 INFO L175 Difference]: Start difference. First operand has 239 places, 279 transitions, 3031 flow. Second operand 10 states and 196 transitions. [2024-06-04 15:43:08,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 322 transitions, 4167 flow [2024-06-04 15:43:08,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 322 transitions, 4014 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-04 15:43:08,732 INFO L231 Difference]: Finished difference. Result has 245 places, 282 transitions, 3151 flow [2024-06-04 15:43:08,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2878, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3151, PETRI_PLACES=245, PETRI_TRANSITIONS=282} [2024-06-04 15:43:08,732 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 202 predicate places. [2024-06-04 15:43:08,732 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 282 transitions, 3151 flow [2024-06-04 15:43:08,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:08,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:08,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:08,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:43:08,733 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:08,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1730270663, now seen corresponding path program 7 times [2024-06-04 15:43:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:08,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572337459] [2024-06-04 15:43:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:08,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:09,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572337459] [2024-06-04 15:43:09,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572337459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:09,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:09,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:09,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248377063] [2024-06-04 15:43:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:09,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:09,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:09,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:10,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:10,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 282 transitions, 3151 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:10,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:10,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:10,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:11,124 INFO L124 PetriNetUnfolderBase]: 2608/4183 cut-off events. [2024-06-04 15:43:11,125 INFO L125 PetriNetUnfolderBase]: For 354799/354799 co-relation queries the response was YES. [2024-06-04 15:43:11,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35361 conditions, 4183 events. 2608/4183 cut-off events. For 354799/354799 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24513 event pairs, 571 based on Foata normal form. 16/4193 useless extension candidates. Maximal degree in co-relation 35244. Up to 3787 conditions per place. [2024-06-04 15:43:11,167 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 263 selfloop transitions, 50 changer transitions 0/318 dead transitions. [2024-06-04 15:43:11,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 318 transitions, 3960 flow [2024-06-04 15:43:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-04 15:43:11,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:43:11,169 INFO L175 Difference]: Start difference. First operand has 245 places, 282 transitions, 3151 flow. Second operand 10 states and 190 transitions. [2024-06-04 15:43:11,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 318 transitions, 3960 flow [2024-06-04 15:43:11,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 318 transitions, 3847 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 15:43:11,532 INFO L231 Difference]: Finished difference. Result has 249 places, 283 transitions, 3188 flow [2024-06-04 15:43:11,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3188, PETRI_PLACES=249, PETRI_TRANSITIONS=283} [2024-06-04 15:43:11,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2024-06-04 15:43:11,533 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 283 transitions, 3188 flow [2024-06-04 15:43:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:11,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:11,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:43:11,533 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:11,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1931561723, now seen corresponding path program 8 times [2024-06-04 15:43:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:11,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16018152] [2024-06-04 15:43:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:11,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:12,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:12,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16018152] [2024-06-04 15:43:12,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16018152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:12,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789105628] [2024-06-04 15:43:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:12,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:12,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:12,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 283 transitions, 3188 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:12,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:12,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:12,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:13,594 INFO L124 PetriNetUnfolderBase]: 2580/4135 cut-off events. [2024-06-04 15:43:13,595 INFO L125 PetriNetUnfolderBase]: For 340592/340592 co-relation queries the response was YES. [2024-06-04 15:43:13,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34238 conditions, 4135 events. 2580/4135 cut-off events. For 340592/340592 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24090 event pairs, 564 based on Foata normal form. 16/4140 useless extension candidates. Maximal degree in co-relation 34119. Up to 3644 conditions per place. [2024-06-04 15:43:13,642 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 238 selfloop transitions, 74 changer transitions 0/317 dead transitions. [2024-06-04 15:43:13,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 317 transitions, 3948 flow [2024-06-04 15:43:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:13,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-04 15:43:13,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-04 15:43:13,643 INFO L175 Difference]: Start difference. First operand has 249 places, 283 transitions, 3188 flow. Second operand 10 states and 192 transitions. [2024-06-04 15:43:13,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 317 transitions, 3948 flow [2024-06-04 15:43:14,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 317 transitions, 3831 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:14,073 INFO L231 Difference]: Finished difference. Result has 251 places, 283 transitions, 3226 flow [2024-06-04 15:43:14,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3226, PETRI_PLACES=251, PETRI_TRANSITIONS=283} [2024-06-04 15:43:14,074 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-04 15:43:14,074 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 283 transitions, 3226 flow [2024-06-04 15:43:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:14,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:14,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:14,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:43:14,075 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)] === [2024-06-04 15:43:14,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1058066827, now seen corresponding path program 9 times [2024-06-04 15:43:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:14,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128741305] [2024-06-04 15:43:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:14,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:15,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128741305] [2024-06-04 15:43:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128741305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:15,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:15,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:15,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885491368] [2024-06-04 15:43:15,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:15,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:15,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:15,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:15,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 283 transitions, 3226 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:15,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:15,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:15,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:16,192 INFO L124 PetriNetUnfolderBase]: 2804/4515 cut-off events. [2024-06-04 15:43:16,193 INFO L125 PetriNetUnfolderBase]: For 405686/405686 co-relation queries the response was YES. [2024-06-04 15:43:16,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38894 conditions, 4515 events. 2804/4515 cut-off events. For 405686/405686 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 26821 event pairs, 554 based on Foata normal form. 12/4516 useless extension candidates. Maximal degree in co-relation 38774. Up to 2726 conditions per place. [2024-06-04 15:43:16,237 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 198 selfloop transitions, 124 changer transitions 0/327 dead transitions. [2024-06-04 15:43:16,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 327 transitions, 4425 flow [2024-06-04 15:43:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 15:43:16,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-04 15:43:16,239 INFO L175 Difference]: Start difference. First operand has 251 places, 283 transitions, 3226 flow. Second operand 10 states and 196 transitions. [2024-06-04 15:43:16,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 327 transitions, 4425 flow [2024-06-04 15:43:16,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 327 transitions, 4264 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:16,722 INFO L231 Difference]: Finished difference. Result has 254 places, 287 transitions, 3534 flow [2024-06-04 15:43:16,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3534, PETRI_PLACES=254, PETRI_TRANSITIONS=287} [2024-06-04 15:43:16,722 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-04 15:43:16,722 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 287 transitions, 3534 flow [2024-06-04 15:43:16,722 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) [2024-06-04 15:43:16,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:16,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:16,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:43:16,722 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)] === [2024-06-04 15:43:16,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash 488789469, now seen corresponding path program 10 times [2024-06-04 15:43:16,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:16,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745560712] [2024-06-04 15:43:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:17,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:17,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745560712] [2024-06-04 15:43:17,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745560712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:17,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:17,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:17,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696473051] [2024-06-04 15:43:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:17,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:17,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:17,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:17,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 287 transitions, 3534 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:17,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:17,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:17,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:18,934 INFO L124 PetriNetUnfolderBase]: 2862/4613 cut-off events. [2024-06-04 15:43:18,934 INFO L125 PetriNetUnfolderBase]: For 430035/430035 co-relation queries the response was YES. [2024-06-04 15:43:18,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40423 conditions, 4613 events. 2862/4613 cut-off events. For 430035/430035 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27641 event pairs, 660 based on Foata normal form. 16/4618 useless extension candidates. Maximal degree in co-relation 40301. Up to 4131 conditions per place. [2024-06-04 15:43:18,985 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 242 selfloop transitions, 75 changer transitions 0/322 dead transitions. [2024-06-04 15:43:18,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 322 transitions, 4351 flow [2024-06-04 15:43:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-04 15:43:18,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-04 15:43:18,986 INFO L175 Difference]: Start difference. First operand has 254 places, 287 transitions, 3534 flow. Second operand 10 states and 191 transitions. [2024-06-04 15:43:18,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 322 transitions, 4351 flow [2024-06-04 15:43:19,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 322 transitions, 4165 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 15:43:19,713 INFO L231 Difference]: Finished difference. Result has 258 places, 288 transitions, 3554 flow [2024-06-04 15:43:19,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3554, PETRI_PLACES=258, PETRI_TRANSITIONS=288} [2024-06-04 15:43:19,714 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 215 predicate places. [2024-06-04 15:43:19,714 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 288 transitions, 3554 flow [2024-06-04 15:43:19,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:19,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:19,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:19,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:43:19,715 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)] === [2024-06-04 15:43:19,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -679284425, now seen corresponding path program 11 times [2024-06-04 15:43:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:19,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74090744] [2024-06-04 15:43:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74090744] [2024-06-04 15:43:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74090744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:20,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:20,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:20,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979378903] [2024-06-04 15:43:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:20,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:20,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 288 transitions, 3554 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:20,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:20,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:20,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:22,014 INFO L124 PetriNetUnfolderBase]: 2903/4694 cut-off events. [2024-06-04 15:43:22,015 INFO L125 PetriNetUnfolderBase]: For 433006/433006 co-relation queries the response was YES. [2024-06-04 15:43:22,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40962 conditions, 4694 events. 2903/4694 cut-off events. For 433006/433006 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 28410 event pairs, 666 based on Foata normal form. 12/4695 useless extension candidates. Maximal degree in co-relation 40838. Up to 3987 conditions per place. [2024-06-04 15:43:22,066 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 245 selfloop transitions, 78 changer transitions 0/328 dead transitions. [2024-06-04 15:43:22,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 328 transitions, 4633 flow [2024-06-04 15:43:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-04 15:43:22,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 15:43:22,068 INFO L175 Difference]: Start difference. First operand has 258 places, 288 transitions, 3554 flow. Second operand 10 states and 195 transitions. [2024-06-04 15:43:22,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 328 transitions, 4633 flow [2024-06-04 15:43:22,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 328 transitions, 4470 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:22,672 INFO L231 Difference]: Finished difference. Result has 260 places, 289 transitions, 3594 flow [2024-06-04 15:43:22,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3594, PETRI_PLACES=260, PETRI_TRANSITIONS=289} [2024-06-04 15:43:22,673 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-04 15:43:22,673 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 289 transitions, 3594 flow [2024-06-04 15:43:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:22,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:22,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:22,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:43:22,674 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:22,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1724908283, now seen corresponding path program 12 times [2024-06-04 15:43:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804970947] [2024-06-04 15:43:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804970947] [2024-06-04 15:43:23,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804970947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:23,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43794941] [2024-06-04 15:43:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:23,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:23,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 289 transitions, 3594 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:23,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:23,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:25,008 INFO L124 PetriNetUnfolderBase]: 2875/4654 cut-off events. [2024-06-04 15:43:25,009 INFO L125 PetriNetUnfolderBase]: For 427387/427387 co-relation queries the response was YES. [2024-06-04 15:43:25,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39911 conditions, 4654 events. 2875/4654 cut-off events. For 427387/427387 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 28170 event pairs, 656 based on Foata normal form. 16/4664 useless extension candidates. Maximal degree in co-relation 39786. Up to 4248 conditions per place. [2024-06-04 15:43:25,068 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 268 selfloop transitions, 51 changer transitions 0/324 dead transitions. [2024-06-04 15:43:25,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 324 transitions, 4374 flow [2024-06-04 15:43:25,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-04 15:43:25,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 15:43:25,070 INFO L175 Difference]: Start difference. First operand has 260 places, 289 transitions, 3594 flow. Second operand 10 states and 189 transitions. [2024-06-04 15:43:25,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 324 transitions, 4374 flow [2024-06-04 15:43:25,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 324 transitions, 4201 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:43:25,524 INFO L231 Difference]: Finished difference. Result has 263 places, 289 transitions, 3530 flow [2024-06-04 15:43:25,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3530, PETRI_PLACES=263, PETRI_TRANSITIONS=289} [2024-06-04 15:43:25,525 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-04 15:43:25,525 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 289 transitions, 3530 flow [2024-06-04 15:43:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:25,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:25,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:25,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:43:25,525 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:25,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash -686902985, now seen corresponding path program 13 times [2024-06-04 15:43:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:25,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962997605] [2024-06-04 15:43:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:26,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:26,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962997605] [2024-06-04 15:43:26,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962997605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:26,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:26,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:26,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060618490] [2024-06-04 15:43:26,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:26,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:26,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:26,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:26,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:26,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 289 transitions, 3530 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:26,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:26,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:26,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:27,844 INFO L124 PetriNetUnfolderBase]: 2847/4610 cut-off events. [2024-06-04 15:43:27,844 INFO L125 PetriNetUnfolderBase]: For 411823/411823 co-relation queries the response was YES. [2024-06-04 15:43:27,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38600 conditions, 4610 events. 2847/4610 cut-off events. For 411823/411823 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27860 event pairs, 640 based on Foata normal form. 16/4620 useless extension candidates. Maximal degree in co-relation 38474. Up to 4204 conditions per place. [2024-06-04 15:43:27,898 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 267 selfloop transitions, 52 changer transitions 0/324 dead transitions. [2024-06-04 15:43:27,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 324 transitions, 4310 flow [2024-06-04 15:43:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-04 15:43:27,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-04 15:43:27,899 INFO L175 Difference]: Start difference. First operand has 263 places, 289 transitions, 3530 flow. Second operand 10 states and 188 transitions. [2024-06-04 15:43:27,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 324 transitions, 4310 flow [2024-06-04 15:43:28,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 324 transitions, 4171 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:28,692 INFO L231 Difference]: Finished difference. Result has 265 places, 289 transitions, 3502 flow [2024-06-04 15:43:28,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3502, PETRI_PLACES=265, PETRI_TRANSITIONS=289} [2024-06-04 15:43:28,692 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-04 15:43:28,692 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 289 transitions, 3502 flow [2024-06-04 15:43:28,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:28,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:28,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:43:28,693 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:28,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash 462240951, now seen corresponding path program 14 times [2024-06-04 15:43:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:28,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207897579] [2024-06-04 15:43:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:28,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:29,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207897579] [2024-06-04 15:43:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207897579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:29,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:29,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339386887] [2024-06-04 15:43:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:29,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:29,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:29,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:29,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:29,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:29,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 289 transitions, 3502 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:29,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:29,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:29,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:30,877 INFO L124 PetriNetUnfolderBase]: 2888/4677 cut-off events. [2024-06-04 15:43:30,878 INFO L125 PetriNetUnfolderBase]: For 415472/415472 co-relation queries the response was YES. [2024-06-04 15:43:30,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39021 conditions, 4677 events. 2888/4677 cut-off events. For 415472/415472 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28362 event pairs, 644 based on Foata normal form. 12/4678 useless extension candidates. Maximal degree in co-relation 38894. Up to 3949 conditions per place. [2024-06-04 15:43:30,931 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 215 selfloop transitions, 109 changer transitions 0/329 dead transitions. [2024-06-04 15:43:30,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 329 transitions, 4597 flow [2024-06-04 15:43:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-04 15:43:30,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-04 15:43:30,932 INFO L175 Difference]: Start difference. First operand has 265 places, 289 transitions, 3502 flow. Second operand 10 states and 196 transitions. [2024-06-04 15:43:30,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 329 transitions, 4597 flow [2024-06-04 15:43:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 329 transitions, 4469 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:43:31,714 INFO L231 Difference]: Finished difference. Result has 265 places, 290 transitions, 3639 flow [2024-06-04 15:43:31,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3639, PETRI_PLACES=265, PETRI_TRANSITIONS=290} [2024-06-04 15:43:31,715 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-04 15:43:31,715 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 290 transitions, 3639 flow [2024-06-04 15:43:31,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:31,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:31,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:31,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:43:31,715 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:31,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:31,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1978314771, now seen corresponding path program 15 times [2024-06-04 15:43:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:31,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976353519] [2024-06-04 15:43:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:31,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:32,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976353519] [2024-06-04 15:43:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976353519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:32,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:32,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182379109] [2024-06-04 15:43:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:32,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:32,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 290 transitions, 3639 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:32,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:32,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:32,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:33,872 INFO L124 PetriNetUnfolderBase]: 2860/4633 cut-off events. [2024-06-04 15:43:33,872 INFO L125 PetriNetUnfolderBase]: For 409232/409232 co-relation queries the response was YES. [2024-06-04 15:43:33,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38114 conditions, 4633 events. 2860/4633 cut-off events. For 409232/409232 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27988 event pairs, 637 based on Foata normal form. 16/4638 useless extension candidates. Maximal degree in co-relation 37987. Up to 4028 conditions per place. [2024-06-04 15:43:33,925 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 212 selfloop transitions, 107 changer transitions 0/324 dead transitions. [2024-06-04 15:43:33,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 324 transitions, 4413 flow [2024-06-04 15:43:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:33,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-04 15:43:33,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-04 15:43:33,929 INFO L175 Difference]: Start difference. First operand has 265 places, 290 transitions, 3639 flow. Second operand 10 states and 191 transitions. [2024-06-04 15:43:33,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 324 transitions, 4413 flow [2024-06-04 15:43:34,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 324 transitions, 4103 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 15:43:34,622 INFO L231 Difference]: Finished difference. Result has 266 places, 290 transitions, 3550 flow [2024-06-04 15:43:34,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3329, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3550, PETRI_PLACES=266, PETRI_TRANSITIONS=290} [2024-06-04 15:43:34,623 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-04 15:43:34,623 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 290 transitions, 3550 flow [2024-06-04 15:43:34,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:34,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:34,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:34,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:43:34,623 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:34,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash -74979764, now seen corresponding path program 1 times [2024-06-04 15:43:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471994704] [2024-06-04 15:43:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:34,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:35,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471994704] [2024-06-04 15:43:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471994704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:35,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:35,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:43:35,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70119015] [2024-06-04 15:43:35,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:35,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:43:35,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:35,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:43:35,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:43:35,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:43:35,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 290 transitions, 3550 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:35,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:35,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:43:35,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:36,483 INFO L124 PetriNetUnfolderBase]: 2794/4593 cut-off events. [2024-06-04 15:43:36,483 INFO L125 PetriNetUnfolderBase]: For 401868/401882 co-relation queries the response was YES. [2024-06-04 15:43:36,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37747 conditions, 4593 events. 2794/4593 cut-off events. For 401868/401882 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28345 event pairs, 733 based on Foata normal form. 3/4583 useless extension candidates. Maximal degree in co-relation 37621. Up to 4218 conditions per place. [2024-06-04 15:43:36,536 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 258 selfloop transitions, 42 changer transitions 0/322 dead transitions. [2024-06-04 15:43:36,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 322 transitions, 4442 flow [2024-06-04 15:43:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:43:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:43:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 15:43:36,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-04 15:43:36,537 INFO L175 Difference]: Start difference. First operand has 266 places, 290 transitions, 3550 flow. Second operand 9 states and 175 transitions. [2024-06-04 15:43:36,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 322 transitions, 4442 flow [2024-06-04 15:43:37,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 322 transitions, 4205 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:43:37,309 INFO L231 Difference]: Finished difference. Result has 265 places, 296 transitions, 3494 flow [2024-06-04 15:43:37,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3494, PETRI_PLACES=265, PETRI_TRANSITIONS=296} [2024-06-04 15:43:37,309 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-04 15:43:37,310 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 296 transitions, 3494 flow [2024-06-04 15:43:37,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:37,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:37,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:37,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:43:37,310 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:37,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash -71170484, now seen corresponding path program 2 times [2024-06-04 15:43:37,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:37,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807482090] [2024-06-04 15:43:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:38,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:38,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807482090] [2024-06-04 15:43:38,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807482090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:38,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:38,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:43:38,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871089447] [2024-06-04 15:43:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:38,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:43:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:43:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:43:38,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:43:38,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 296 transitions, 3494 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:38,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:38,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:43:38,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:39,205 INFO L124 PetriNetUnfolderBase]: 2795/4598 cut-off events. [2024-06-04 15:43:39,205 INFO L125 PetriNetUnfolderBase]: For 411737/411751 co-relation queries the response was YES. [2024-06-04 15:43:39,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37963 conditions, 4598 events. 2795/4598 cut-off events. For 411737/411751 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 28507 event pairs, 734 based on Foata normal form. 2/4588 useless extension candidates. Maximal degree in co-relation 37837. Up to 4276 conditions per place. [2024-06-04 15:43:39,250 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 265 selfloop transitions, 33 changer transitions 0/320 dead transitions. [2024-06-04 15:43:39,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 320 transitions, 4370 flow [2024-06-04 15:43:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:43:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:43:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 15:43:39,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:43:39,251 INFO L175 Difference]: Start difference. First operand has 265 places, 296 transitions, 3494 flow. Second operand 8 states and 152 transitions. [2024-06-04 15:43:39,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 320 transitions, 4370 flow [2024-06-04 15:43:40,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 320 transitions, 4275 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 15:43:40,072 INFO L231 Difference]: Finished difference. Result has 269 places, 302 transitions, 3594 flow [2024-06-04 15:43:40,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3407, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3594, PETRI_PLACES=269, PETRI_TRANSITIONS=302} [2024-06-04 15:43:40,072 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-04 15:43:40,072 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 302 transitions, 3594 flow [2024-06-04 15:43:40,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:40,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:40,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:40,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:43:40,073 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)] === [2024-06-04 15:43:40,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash -730172946, now seen corresponding path program 3 times [2024-06-04 15:43:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:40,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008101444] [2024-06-04 15:43:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:40,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008101444] [2024-06-04 15:43:40,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008101444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:40,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:40,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:43:40,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623900710] [2024-06-04 15:43:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:40,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:43:40,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:43:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:43:40,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:43:40,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 302 transitions, 3594 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:40,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:40,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:43:40,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:41,972 INFO L124 PetriNetUnfolderBase]: 2793/4595 cut-off events. [2024-06-04 15:43:41,972 INFO L125 PetriNetUnfolderBase]: For 416541/416543 co-relation queries the response was YES. [2024-06-04 15:43:42,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38059 conditions, 4595 events. 2793/4595 cut-off events. For 416541/416543 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28455 event pairs, 734 based on Foata normal form. 4/4587 useless extension candidates. Maximal degree in co-relation 37930. Up to 4249 conditions per place. [2024-06-04 15:43:42,029 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 269 selfloop transitions, 40 changer transitions 0/331 dead transitions. [2024-06-04 15:43:42,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 331 transitions, 4660 flow [2024-06-04 15:43:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:43:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:43:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-04 15:43:42,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2024-06-04 15:43:42,031 INFO L175 Difference]: Start difference. First operand has 269 places, 302 transitions, 3594 flow. Second operand 7 states and 145 transitions. [2024-06-04 15:43:42,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 331 transitions, 4660 flow [2024-06-04 15:43:42,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 331 transitions, 4561 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-04 15:43:42,883 INFO L231 Difference]: Finished difference. Result has 272 places, 308 transitions, 3724 flow [2024-06-04 15:43:42,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3724, PETRI_PLACES=272, PETRI_TRANSITIONS=308} [2024-06-04 15:43:42,884 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-04 15:43:42,884 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 308 transitions, 3724 flow [2024-06-04 15:43:42,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:42,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:42,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:42,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:43:42,885 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)] === [2024-06-04 15:43:42,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1014653934, now seen corresponding path program 1 times [2024-06-04 15:43:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:42,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999006838] [2024-06-04 15:43:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:43,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:43,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999006838] [2024-06-04 15:43:43,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999006838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:43,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:43,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:43:43,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586432912] [2024-06-04 15:43:43,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:43,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:43:43,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:43,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:43:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:43:43,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:43,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 308 transitions, 3724 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:43,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:43,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:43,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:44,594 INFO L124 PetriNetUnfolderBase]: 2885/4686 cut-off events. [2024-06-04 15:43:44,595 INFO L125 PetriNetUnfolderBase]: For 415958/415958 co-relation queries the response was YES. [2024-06-04 15:43:44,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38983 conditions, 4686 events. 2885/4686 cut-off events. For 415958/415958 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28547 event pairs, 788 based on Foata normal form. 1/4685 useless extension candidates. Maximal degree in co-relation 38852. Up to 4478 conditions per place. [2024-06-04 15:43:44,644 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 288 selfloop transitions, 26 changer transitions 0/319 dead transitions. [2024-06-04 15:43:44,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 319 transitions, 4386 flow [2024-06-04 15:43:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:43:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:43:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-04 15:43:44,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-04 15:43:44,645 INFO L175 Difference]: Start difference. First operand has 272 places, 308 transitions, 3724 flow. Second operand 5 states and 101 transitions. [2024-06-04 15:43:44,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 319 transitions, 4386 flow [2024-06-04 15:43:45,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 319 transitions, 4285 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-04 15:43:45,498 INFO L231 Difference]: Finished difference. Result has 274 places, 308 transitions, 3696 flow [2024-06-04 15:43:45,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3696, PETRI_PLACES=274, PETRI_TRANSITIONS=308} [2024-06-04 15:43:45,499 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 231 predicate places. [2024-06-04 15:43:45,499 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 308 transitions, 3696 flow [2024-06-04 15:43:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:45,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:45,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:45,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:43:45,499 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:45,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1745758595, now seen corresponding path program 1 times [2024-06-04 15:43:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:45,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760844532] [2024-06-04 15:43:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:45,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:46,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:46,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760844532] [2024-06-04 15:43:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760844532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:46,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:46,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601458870] [2024-06-04 15:43:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:46,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:46,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:46,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:46,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:46,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:46,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 308 transitions, 3696 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:46,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:46,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:46,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:47,890 INFO L124 PetriNetUnfolderBase]: 2926/4757 cut-off events. [2024-06-04 15:43:47,890 INFO L125 PetriNetUnfolderBase]: For 447626/447626 co-relation queries the response was YES. [2024-06-04 15:43:47,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39564 conditions, 4757 events. 2926/4757 cut-off events. For 447626/447626 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 29106 event pairs, 631 based on Foata normal form. 12/4767 useless extension candidates. Maximal degree in co-relation 39431. Up to 4433 conditions per place. [2024-06-04 15:43:47,943 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 312 selfloop transitions, 29 changer transitions 0/346 dead transitions. [2024-06-04 15:43:47,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 346 transitions, 4538 flow [2024-06-04 15:43:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-04 15:43:47,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-04 15:43:47,945 INFO L175 Difference]: Start difference. First operand has 274 places, 308 transitions, 3696 flow. Second operand 10 states and 187 transitions. [2024-06-04 15:43:47,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 346 transitions, 4538 flow [2024-06-04 15:43:48,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 346 transitions, 4486 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:43:48,817 INFO L231 Difference]: Finished difference. Result has 280 places, 309 transitions, 3742 flow [2024-06-04 15:43:48,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3742, PETRI_PLACES=280, PETRI_TRANSITIONS=309} [2024-06-04 15:43:48,818 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-04 15:43:48,818 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 309 transitions, 3742 flow [2024-06-04 15:43:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:48,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:48,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:43:48,818 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:48,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash -303957505, now seen corresponding path program 2 times [2024-06-04 15:43:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:48,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453598031] [2024-06-04 15:43:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:48,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:50,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:50,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453598031] [2024-06-04 15:43:50,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453598031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:50,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:50,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:50,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060072205] [2024-06-04 15:43:50,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:50,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:50,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:50,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 309 transitions, 3742 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:50,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:50,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:50,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:51,440 INFO L124 PetriNetUnfolderBase]: 2967/4826 cut-off events. [2024-06-04 15:43:51,440 INFO L125 PetriNetUnfolderBase]: For 463289/463289 co-relation queries the response was YES. [2024-06-04 15:43:51,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40333 conditions, 4826 events. 2967/4826 cut-off events. For 463289/463289 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29666 event pairs, 633 based on Foata normal form. 12/4836 useless extension candidates. Maximal degree in co-relation 40199. Up to 4171 conditions per place. [2024-06-04 15:43:51,500 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 291 selfloop transitions, 58 changer transitions 0/354 dead transitions. [2024-06-04 15:43:51,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 354 transitions, 4670 flow [2024-06-04 15:43:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:43:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:43:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-04 15:43:51,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-04 15:43:51,501 INFO L175 Difference]: Start difference. First operand has 280 places, 309 transitions, 3742 flow. Second operand 11 states and 210 transitions. [2024-06-04 15:43:51,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 354 transitions, 4670 flow [2024-06-04 15:43:52,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 354 transitions, 4596 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:43:52,586 INFO L231 Difference]: Finished difference. Result has 283 places, 310 transitions, 3838 flow [2024-06-04 15:43:52,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3838, PETRI_PLACES=283, PETRI_TRANSITIONS=310} [2024-06-04 15:43:52,587 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-04 15:43:52,587 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 310 transitions, 3838 flow [2024-06-04 15:43:52,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:52,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:52,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:52,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:43:52,587 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:52,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 174335699, now seen corresponding path program 3 times [2024-06-04 15:43:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:52,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160175381] [2024-06-04 15:43:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:52,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:53,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:53,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160175381] [2024-06-04 15:43:53,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160175381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:53,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:53,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:53,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412536881] [2024-06-04 15:43:53,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:53,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:53,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:53,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:53,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:53,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:53,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 310 transitions, 3838 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:53,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:53,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:54,906 INFO L124 PetriNetUnfolderBase]: 2947/4796 cut-off events. [2024-06-04 15:43:54,906 INFO L125 PetriNetUnfolderBase]: For 450336/450336 co-relation queries the response was YES. [2024-06-04 15:43:54,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39623 conditions, 4796 events. 2947/4796 cut-off events. For 450336/450336 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29458 event pairs, 632 based on Foata normal form. 12/4806 useless extension candidates. Maximal degree in co-relation 39488. Up to 4472 conditions per place. [2024-06-04 15:43:54,962 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 313 selfloop transitions, 29 changer transitions 0/347 dead transitions. [2024-06-04 15:43:54,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 347 transitions, 4650 flow [2024-06-04 15:43:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-04 15:43:54,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-04 15:43:54,963 INFO L175 Difference]: Start difference. First operand has 283 places, 310 transitions, 3838 flow. Second operand 10 states and 187 transitions. [2024-06-04 15:43:54,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 347 transitions, 4650 flow [2024-06-04 15:43:55,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 347 transitions, 4500 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:43:55,771 INFO L231 Difference]: Finished difference. Result has 284 places, 310 transitions, 3752 flow [2024-06-04 15:43:55,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3752, PETRI_PLACES=284, PETRI_TRANSITIONS=310} [2024-06-04 15:43:55,771 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-04 15:43:55,771 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 310 transitions, 3752 flow [2024-06-04 15:43:55,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:55,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:55,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:55,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:43:55,772 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:55,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1854388735, now seen corresponding path program 4 times [2024-06-04 15:43:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478785232] [2024-06-04 15:43:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:56,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:56,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478785232] [2024-06-04 15:43:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478785232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:56,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:56,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:43:56,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069665387] [2024-06-04 15:43:56,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:56,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:43:56,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:56,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:43:56,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:43:56,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:43:56,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 310 transitions, 3752 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:56,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:56,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:43:56,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:57,980 INFO L124 PetriNetUnfolderBase]: 2988/4867 cut-off events. [2024-06-04 15:43:57,980 INFO L125 PetriNetUnfolderBase]: For 462975/462975 co-relation queries the response was YES. [2024-06-04 15:43:58,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39959 conditions, 4867 events. 2988/4867 cut-off events. For 462975/462975 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29932 event pairs, 542 based on Foata normal form. 12/4877 useless extension candidates. Maximal degree in co-relation 39823. Up to 4492 conditions per place. [2024-06-04 15:43:58,044 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 319 selfloop transitions, 28 changer transitions 0/352 dead transitions. [2024-06-04 15:43:58,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 352 transitions, 4632 flow [2024-06-04 15:43:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:43:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:43:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-04 15:43:58,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-04 15:43:58,046 INFO L175 Difference]: Start difference. First operand has 284 places, 310 transitions, 3752 flow. Second operand 10 states and 188 transitions. [2024-06-04 15:43:58,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 352 transitions, 4632 flow [2024-06-04 15:43:59,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 352 transitions, 4544 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:43:59,144 INFO L231 Difference]: Finished difference. Result has 285 places, 311 transitions, 3776 flow [2024-06-04 15:43:59,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3664, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3776, PETRI_PLACES=285, PETRI_TRANSITIONS=311} [2024-06-04 15:43:59,144 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-04 15:43:59,144 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 311 transitions, 3776 flow [2024-06-04 15:43:59,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:59,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:59,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:59,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:43:59,145 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:43:59,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash 304959999, now seen corresponding path program 5 times [2024-06-04 15:43:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540557604] [2024-06-04 15:43:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540557604] [2024-06-04 15:44:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540557604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:00,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496339946] [2024-06-04 15:44:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:00,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:00,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 311 transitions, 3776 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:00,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:00,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:00,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:01,645 INFO L124 PetriNetUnfolderBase]: 3029/4938 cut-off events. [2024-06-04 15:44:01,646 INFO L125 PetriNetUnfolderBase]: For 479828/479828 co-relation queries the response was YES. [2024-06-04 15:44:01,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40584 conditions, 4938 events. 3029/4938 cut-off events. For 479828/479828 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 30598 event pairs, 634 based on Foata normal form. 12/4948 useless extension candidates. Maximal degree in co-relation 40447. Up to 4541 conditions per place. [2024-06-04 15:44:01,711 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 309 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2024-06-04 15:44:01,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 352 transitions, 4656 flow [2024-06-04 15:44:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:44:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:44:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-04 15:44:01,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:44:01,712 INFO L175 Difference]: Start difference. First operand has 285 places, 311 transitions, 3776 flow. Second operand 10 states and 190 transitions. [2024-06-04 15:44:01,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 352 transitions, 4656 flow [2024-06-04 15:44:02,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 352 transitions, 4570 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:02,899 INFO L231 Difference]: Finished difference. Result has 287 places, 312 transitions, 3824 flow [2024-06-04 15:44:02,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=287, PETRI_TRANSITIONS=312} [2024-06-04 15:44:02,899 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-04 15:44:02,899 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 312 transitions, 3824 flow [2024-06-04 15:44:02,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:02,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:02,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:02,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:44:02,900 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:02,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash 309543969, now seen corresponding path program 6 times [2024-06-04 15:44:02,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:02,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550342206] [2024-06-04 15:44:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:02,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:04,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:04,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550342206] [2024-06-04 15:44:04,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550342206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:04,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:04,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:04,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573205980] [2024-06-04 15:44:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:04,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:04,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:04,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 312 transitions, 3824 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:04,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:04,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:04,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:05,618 INFO L124 PetriNetUnfolderBase]: 3070/5009 cut-off events. [2024-06-04 15:44:05,618 INFO L125 PetriNetUnfolderBase]: For 491850/491850 co-relation queries the response was YES. [2024-06-04 15:44:05,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41182 conditions, 5009 events. 3070/5009 cut-off events. For 491850/491850 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 31039 event pairs, 669 based on Foata normal form. 12/5019 useless extension candidates. Maximal degree in co-relation 41044. Up to 4658 conditions per place. [2024-06-04 15:44:05,672 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 311 selfloop transitions, 36 changer transitions 0/352 dead transitions. [2024-06-04 15:44:05,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 352 transitions, 4704 flow [2024-06-04 15:44:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:44:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:44:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-04 15:44:05,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-04 15:44:05,673 INFO L175 Difference]: Start difference. First operand has 287 places, 312 transitions, 3824 flow. Second operand 10 states and 188 transitions. [2024-06-04 15:44:05,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 352 transitions, 4704 flow [2024-06-04 15:44:06,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 352 transitions, 4596 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:06,892 INFO L231 Difference]: Finished difference. Result has 289 places, 313 transitions, 3848 flow [2024-06-04 15:44:06,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3848, PETRI_PLACES=289, PETRI_TRANSITIONS=313} [2024-06-04 15:44:06,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-04 15:44:06,892 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 313 transitions, 3848 flow [2024-06-04 15:44:06,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:06,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:06,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:06,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:44:06,893 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)] === [2024-06-04 15:44:06,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:06,893 INFO L85 PathProgramCache]: Analyzing trace with hash 679041157, now seen corresponding path program 1 times [2024-06-04 15:44:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:06,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480923895] [2024-06-04 15:44:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:07,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:07,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480923895] [2024-06-04 15:44:07,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480923895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:07,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:07,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:07,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873595129] [2024-06-04 15:44:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:07,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:07,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:07,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:07,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 313 transitions, 3848 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:07,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:07,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:07,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:08,704 INFO L124 PetriNetUnfolderBase]: 3096/5045 cut-off events. [2024-06-04 15:44:08,704 INFO L125 PetriNetUnfolderBase]: For 486239/486239 co-relation queries the response was YES. [2024-06-04 15:44:08,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41707 conditions, 5045 events. 3096/5045 cut-off events. For 486239/486239 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31329 event pairs, 686 based on Foata normal form. 2/5045 useless extension candidates. Maximal degree in co-relation 41568. Up to 4764 conditions per place. [2024-06-04 15:44:08,757 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 300 selfloop transitions, 39 changer transitions 0/344 dead transitions. [2024-06-04 15:44:08,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 344 transitions, 4928 flow [2024-06-04 15:44:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 15:44:08,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 15:44:08,758 INFO L175 Difference]: Start difference. First operand has 289 places, 313 transitions, 3848 flow. Second operand 8 states and 154 transitions. [2024-06-04 15:44:08,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 344 transitions, 4928 flow [2024-06-04 15:44:09,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 344 transitions, 4822 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:09,812 INFO L231 Difference]: Finished difference. Result has 289 places, 319 transitions, 3986 flow [2024-06-04 15:44:09,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3742, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3986, PETRI_PLACES=289, PETRI_TRANSITIONS=319} [2024-06-04 15:44:09,812 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-04 15:44:09,812 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 319 transitions, 3986 flow [2024-06-04 15:44:09,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:09,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:09,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:09,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:44:09,813 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:09,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash 679161127, now seen corresponding path program 2 times [2024-06-04 15:44:09,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:09,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752545956] [2024-06-04 15:44:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:10,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:10,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752545956] [2024-06-04 15:44:10,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752545956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:10,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:10,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:10,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508139744] [2024-06-04 15:44:10,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:10,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:10,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:10,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:10,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 319 transitions, 3986 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:10,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:10,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:10,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:11,707 INFO L124 PetriNetUnfolderBase]: 3116/5077 cut-off events. [2024-06-04 15:44:11,707 INFO L125 PetriNetUnfolderBase]: For 498329/498329 co-relation queries the response was YES. [2024-06-04 15:44:11,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42253 conditions, 5077 events. 3116/5077 cut-off events. For 498329/498329 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31608 event pairs, 687 based on Foata normal form. 2/5077 useless extension candidates. Maximal degree in co-relation 42113. Up to 4828 conditions per place. [2024-06-04 15:44:11,859 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 308 selfloop transitions, 35 changer transitions 0/348 dead transitions. [2024-06-04 15:44:11,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 348 transitions, 4890 flow [2024-06-04 15:44:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 15:44:11,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-04 15:44:11,860 INFO L175 Difference]: Start difference. First operand has 289 places, 319 transitions, 3986 flow. Second operand 8 states and 149 transitions. [2024-06-04 15:44:11,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 348 transitions, 4890 flow [2024-06-04 15:44:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 348 transitions, 4759 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:13,148 INFO L231 Difference]: Finished difference. Result has 293 places, 327 transitions, 4075 flow [2024-06-04 15:44:13,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4075, PETRI_PLACES=293, PETRI_TRANSITIONS=327} [2024-06-04 15:44:13,149 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-04 15:44:13,149 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 327 transitions, 4075 flow [2024-06-04 15:44:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:13,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:13,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:44:13,149 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:13,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash 619572255, now seen corresponding path program 1 times [2024-06-04 15:44:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267235009] [2024-06-04 15:44:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:13,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:13,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267235009] [2024-06-04 15:44:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267235009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:13,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:13,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810871573] [2024-06-04 15:44:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:13,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:13,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:13,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 327 transitions, 4075 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:13,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:13,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:13,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:14,890 INFO L124 PetriNetUnfolderBase]: 3168/5151 cut-off events. [2024-06-04 15:44:14,890 INFO L125 PetriNetUnfolderBase]: For 527698/527698 co-relation queries the response was YES. [2024-06-04 15:44:14,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43244 conditions, 5151 events. 3168/5151 cut-off events. For 527698/527698 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 32047 event pairs, 690 based on Foata normal form. 4/5153 useless extension candidates. Maximal degree in co-relation 43102. Up to 4850 conditions per place. [2024-06-04 15:44:14,955 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 317 selfloop transitions, 41 changer transitions 0/363 dead transitions. [2024-06-04 15:44:14,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 363 transitions, 5218 flow [2024-06-04 15:44:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 15:44:14,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-04 15:44:14,956 INFO L175 Difference]: Start difference. First operand has 293 places, 327 transitions, 4075 flow. Second operand 8 states and 155 transitions. [2024-06-04 15:44:14,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 363 transitions, 5218 flow [2024-06-04 15:44:16,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 363 transitions, 5110 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:16,151 INFO L231 Difference]: Finished difference. Result has 298 places, 338 transitions, 4256 flow [2024-06-04 15:44:16,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4256, PETRI_PLACES=298, PETRI_TRANSITIONS=338} [2024-06-04 15:44:16,152 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-04 15:44:16,152 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 338 transitions, 4256 flow [2024-06-04 15:44:16,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:16,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:16,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:16,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:44:16,152 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:16,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash 796703589, now seen corresponding path program 3 times [2024-06-04 15:44:16,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:16,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212111661] [2024-06-04 15:44:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:16,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:16,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212111661] [2024-06-04 15:44:16,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212111661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:16,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:16,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524749063] [2024-06-04 15:44:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:16,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:16,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:16,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 338 transitions, 4256 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:16,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:16,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:16,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:18,035 INFO L124 PetriNetUnfolderBase]: 3188/5187 cut-off events. [2024-06-04 15:44:18,035 INFO L125 PetriNetUnfolderBase]: For 537967/537967 co-relation queries the response was YES. [2024-06-04 15:44:18,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44262 conditions, 5187 events. 3188/5187 cut-off events. For 537967/537967 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 32415 event pairs, 688 based on Foata normal form. 2/5187 useless extension candidates. Maximal degree in co-relation 44118. Up to 4961 conditions per place. [2024-06-04 15:44:18,101 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 332 selfloop transitions, 28 changer transitions 0/365 dead transitions. [2024-06-04 15:44:18,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 365 transitions, 5198 flow [2024-06-04 15:44:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:18,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 15:44:18,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:44:18,102 INFO L175 Difference]: Start difference. First operand has 298 places, 338 transitions, 4256 flow. Second operand 8 states and 144 transitions. [2024-06-04 15:44:18,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 365 transitions, 5198 flow [2024-06-04 15:44:19,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 365 transitions, 5093 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-04 15:44:19,367 INFO L231 Difference]: Finished difference. Result has 304 places, 347 transitions, 4387 flow [2024-06-04 15:44:19,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4387, PETRI_PLACES=304, PETRI_TRANSITIONS=347} [2024-06-04 15:44:19,368 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-04 15:44:19,368 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 347 transitions, 4387 flow [2024-06-04 15:44:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:19,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:19,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:19,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:44:19,369 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash 796703775, now seen corresponding path program 2 times [2024-06-04 15:44:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147594447] [2024-06-04 15:44:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:19,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:20,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:20,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147594447] [2024-06-04 15:44:20,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147594447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:20,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:20,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:20,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176799509] [2024-06-04 15:44:20,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:20,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:20,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:20,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:20,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 347 transitions, 4387 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:20,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:20,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:20,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:21,140 INFO L124 PetriNetUnfolderBase]: 3240/5265 cut-off events. [2024-06-04 15:44:21,140 INFO L125 PetriNetUnfolderBase]: For 565721/565721 co-relation queries the response was YES. [2024-06-04 15:44:21,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45087 conditions, 5265 events. 3240/5265 cut-off events. For 565721/565721 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 32878 event pairs, 695 based on Foata normal form. 4/5267 useless extension candidates. Maximal degree in co-relation 44940. Up to 4991 conditions per place. [2024-06-04 15:44:21,206 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 334 selfloop transitions, 38 changer transitions 0/377 dead transitions. [2024-06-04 15:44:21,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 377 transitions, 5514 flow [2024-06-04 15:44:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 15:44:21,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-04 15:44:21,208 INFO L175 Difference]: Start difference. First operand has 304 places, 347 transitions, 4387 flow. Second operand 8 states and 151 transitions. [2024-06-04 15:44:21,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 377 transitions, 5514 flow [2024-06-04 15:44:22,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 377 transitions, 5397 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:22,860 INFO L231 Difference]: Finished difference. Result has 308 places, 355 transitions, 4485 flow [2024-06-04 15:44:22,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4485, PETRI_PLACES=308, PETRI_TRANSITIONS=355} [2024-06-04 15:44:22,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-04 15:44:22,860 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 355 transitions, 4485 flow [2024-06-04 15:44:22,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:22,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:22,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:22,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:44:22,861 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:22,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 856529983, now seen corresponding path program 3 times [2024-06-04 15:44:22,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:22,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776675507] [2024-06-04 15:44:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:22,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:23,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776675507] [2024-06-04 15:44:23,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776675507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:23,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:23,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584800878] [2024-06-04 15:44:23,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:23,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:23,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:23,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 355 transitions, 4485 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:23,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:23,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:23,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:24,654 INFO L124 PetriNetUnfolderBase]: 3228/5245 cut-off events. [2024-06-04 15:44:24,654 INFO L125 PetriNetUnfolderBase]: For 564903/564903 co-relation queries the response was YES. [2024-06-04 15:44:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44777 conditions, 5245 events. 3228/5245 cut-off events. For 564903/564903 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 32709 event pairs, 691 based on Foata normal form. 4/5247 useless extension candidates. Maximal degree in co-relation 44629. Up to 5005 conditions per place. [2024-06-04 15:44:24,720 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 337 selfloop transitions, 31 changer transitions 0/373 dead transitions. [2024-06-04 15:44:24,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 373 transitions, 5291 flow [2024-06-04 15:44:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 15:44:24,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-04 15:44:24,721 INFO L175 Difference]: Start difference. First operand has 308 places, 355 transitions, 4485 flow. Second operand 8 states and 146 transitions. [2024-06-04 15:44:24,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 373 transitions, 5291 flow [2024-06-04 15:44:26,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 373 transitions, 5178 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-04 15:44:26,312 INFO L231 Difference]: Finished difference. Result has 313 places, 355 transitions, 4440 flow [2024-06-04 15:44:26,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4372, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4440, PETRI_PLACES=313, PETRI_TRANSITIONS=355} [2024-06-04 15:44:26,313 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-04 15:44:26,313 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 355 transitions, 4440 flow [2024-06-04 15:44:26,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:26,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:26,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:26,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:44:26,313 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)] === [2024-06-04 15:44:26,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash 856538911, now seen corresponding path program 1 times [2024-06-04 15:44:26,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:26,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826448101] [2024-06-04 15:44:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:26,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:27,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:27,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826448101] [2024-06-04 15:44:27,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826448101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:27,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138355224] [2024-06-04 15:44:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:27,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:27,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 355 transitions, 4440 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:44:27,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:27,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:27,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:28,478 INFO L124 PetriNetUnfolderBase]: 3272/5313 cut-off events. [2024-06-04 15:44:28,479 INFO L125 PetriNetUnfolderBase]: For 601139/601139 co-relation queries the response was YES. [2024-06-04 15:44:28,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45181 conditions, 5313 events. 3272/5313 cut-off events. For 601139/601139 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 33179 event pairs, 700 based on Foata normal form. 12/5323 useless extension candidates. Maximal degree in co-relation 45031. Up to 4950 conditions per place. [2024-06-04 15:44:28,545 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 331 selfloop transitions, 45 changer transitions 0/381 dead transitions. [2024-06-04 15:44:28,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 381 transitions, 5364 flow [2024-06-04 15:44:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 15:44:28,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-04 15:44:28,546 INFO L175 Difference]: Start difference. First operand has 313 places, 355 transitions, 4440 flow. Second operand 8 states and 154 transitions. [2024-06-04 15:44:28,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 381 transitions, 5364 flow [2024-06-04 15:44:30,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 381 transitions, 5285 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:44:30,084 INFO L231 Difference]: Finished difference. Result has 314 places, 356 transitions, 4470 flow [2024-06-04 15:44:30,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4470, PETRI_PLACES=314, PETRI_TRANSITIONS=356} [2024-06-04 15:44:30,084 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 271 predicate places. [2024-06-04 15:44:30,084 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 356 transitions, 4470 flow [2024-06-04 15:44:30,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:44:30,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:30,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:30,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:44:30,085 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:30,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:30,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2033835539, now seen corresponding path program 7 times [2024-06-04 15:44:30,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:30,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215971822] [2024-06-04 15:44:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:31,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:31,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215971822] [2024-06-04 15:44:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215971822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:31,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100894812] [2024-06-04 15:44:31,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:31,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:31,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 356 transitions, 4470 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:31,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:31,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:32,576 INFO L124 PetriNetUnfolderBase]: 3252/5282 cut-off events. [2024-06-04 15:44:32,576 INFO L125 PetriNetUnfolderBase]: For 576058/576058 co-relation queries the response was YES. [2024-06-04 15:44:32,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44355 conditions, 5282 events. 3252/5282 cut-off events. For 576058/576058 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 33030 event pairs, 679 based on Foata normal form. 12/5288 useless extension candidates. Maximal degree in co-relation 44204. Up to 4860 conditions per place. [2024-06-04 15:44:32,640 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 335 selfloop transitions, 51 changer transitions 0/391 dead transitions. [2024-06-04 15:44:32,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 391 transitions, 5364 flow [2024-06-04 15:44:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:44:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:44:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-04 15:44:32,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-04 15:44:32,642 INFO L175 Difference]: Start difference. First operand has 314 places, 356 transitions, 4470 flow. Second operand 10 states and 187 transitions. [2024-06-04 15:44:32,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 391 transitions, 5364 flow [2024-06-04 15:44:34,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 391 transitions, 5273 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:34,450 INFO L231 Difference]: Finished difference. Result has 318 places, 356 transitions, 4487 flow [2024-06-04 15:44:34,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4487, PETRI_PLACES=318, PETRI_TRANSITIONS=356} [2024-06-04 15:44:34,451 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-04 15:44:34,451 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 356 transitions, 4487 flow [2024-06-04 15:44:34,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:34,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:34,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:34,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:44:34,451 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:34,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1601257931, now seen corresponding path program 8 times [2024-06-04 15:44:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:34,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499846136] [2024-06-04 15:44:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:34,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:35,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:35,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499846136] [2024-06-04 15:44:35,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499846136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:35,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:35,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:35,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297636986] [2024-06-04 15:44:35,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:35,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:35,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:35,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:35,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:35,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 356 transitions, 4487 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:35,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:35,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:35,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:37,010 INFO L124 PetriNetUnfolderBase]: 3293/5351 cut-off events. [2024-06-04 15:44:37,010 INFO L125 PetriNetUnfolderBase]: For 591291/591291 co-relation queries the response was YES. [2024-06-04 15:44:37,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45005 conditions, 5351 events. 3293/5351 cut-off events. For 591291/591291 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 33552 event pairs, 688 based on Foata normal form. 12/5357 useless extension candidates. Maximal degree in co-relation 44853. Up to 4931 conditions per place. [2024-06-04 15:44:37,083 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 338 selfloop transitions, 49 changer transitions 0/392 dead transitions. [2024-06-04 15:44:37,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 392 transitions, 5424 flow [2024-06-04 15:44:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:44:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:44:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-04 15:44:37,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-04 15:44:37,084 INFO L175 Difference]: Start difference. First operand has 318 places, 356 transitions, 4487 flow. Second operand 10 states and 189 transitions. [2024-06-04 15:44:37,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 392 transitions, 5424 flow [2024-06-04 15:44:38,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 392 transitions, 5258 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-04 15:44:38,720 INFO L231 Difference]: Finished difference. Result has 318 places, 357 transitions, 4468 flow [2024-06-04 15:44:38,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4322, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4468, PETRI_PLACES=318, PETRI_TRANSITIONS=357} [2024-06-04 15:44:38,721 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-04 15:44:38,721 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 357 transitions, 4468 flow [2024-06-04 15:44:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:38,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:38,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:38,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:44:38,721 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:38,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash -282130263, now seen corresponding path program 9 times [2024-06-04 15:44:38,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:38,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134179438] [2024-06-04 15:44:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:38,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:40,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134179438] [2024-06-04 15:44:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134179438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:40,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:40,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516902308] [2024-06-04 15:44:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:40,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:40,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:40,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 357 transitions, 4468 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:40,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:40,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:40,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:41,493 INFO L124 PetriNetUnfolderBase]: 3273/5319 cut-off events. [2024-06-04 15:44:41,493 INFO L125 PetriNetUnfolderBase]: For 569948/569948 co-relation queries the response was YES. [2024-06-04 15:44:41,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43701 conditions, 5319 events. 3273/5319 cut-off events. For 569948/569948 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33310 event pairs, 674 based on Foata normal form. 12/5325 useless extension candidates. Maximal degree in co-relation 43550. Up to 4780 conditions per place. [2024-06-04 15:44:41,559 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 338 selfloop transitions, 60 changer transitions 0/403 dead transitions. [2024-06-04 15:44:41,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 403 transitions, 5462 flow [2024-06-04 15:44:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:44:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:44:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-04 15:44:41,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-04 15:44:41,560 INFO L175 Difference]: Start difference. First operand has 318 places, 357 transitions, 4468 flow. Second operand 12 states and 225 transitions. [2024-06-04 15:44:41,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 403 transitions, 5462 flow [2024-06-04 15:44:43,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 403 transitions, 5326 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:43,089 INFO L231 Difference]: Finished difference. Result has 322 places, 357 transitions, 4458 flow [2024-06-04 15:44:43,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4332, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4458, PETRI_PLACES=322, PETRI_TRANSITIONS=357} [2024-06-04 15:44:43,090 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-04 15:44:43,090 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 357 transitions, 4458 flow [2024-06-04 15:44:43,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:43,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:43,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:43,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:44:43,090 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:43,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash -286714233, now seen corresponding path program 10 times [2024-06-04 15:44:43,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:43,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515690970] [2024-06-04 15:44:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:44,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:44,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515690970] [2024-06-04 15:44:44,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515690970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:44,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:44,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130678717] [2024-06-04 15:44:44,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:44,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:44,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:44,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:44,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:44,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 357 transitions, 4458 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:44,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:44,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:44,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:45,600 INFO L124 PetriNetUnfolderBase]: 3253/5287 cut-off events. [2024-06-04 15:44:45,600 INFO L125 PetriNetUnfolderBase]: For 546223/546223 co-relation queries the response was YES. [2024-06-04 15:44:45,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42522 conditions, 5287 events. 3253/5287 cut-off events. For 546223/546223 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33223 event pairs, 638 based on Foata normal form. 12/5293 useless extension candidates. Maximal degree in co-relation 42370. Up to 4790 conditions per place. [2024-06-04 15:44:45,672 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 330 selfloop transitions, 57 changer transitions 0/392 dead transitions. [2024-06-04 15:44:45,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 392 transitions, 5220 flow [2024-06-04 15:44:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:44:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:44:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-04 15:44:45,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-04 15:44:45,673 INFO L175 Difference]: Start difference. First operand has 322 places, 357 transitions, 4458 flow. Second operand 10 states and 188 transitions. [2024-06-04 15:44:45,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 392 transitions, 5220 flow [2024-06-04 15:44:47,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 392 transitions, 4980 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 15:44:47,153 INFO L231 Difference]: Finished difference. Result has 318 places, 356 transitions, 4200 flow [2024-06-04 15:44:47,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4200, PETRI_PLACES=318, PETRI_TRANSITIONS=356} [2024-06-04 15:44:47,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-04 15:44:47,153 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 356 transitions, 4200 flow [2024-06-04 15:44:47,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:47,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:47,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:47,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:44:47,153 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:47,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1178549313, now seen corresponding path program 4 times [2024-06-04 15:44:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:47,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819283396] [2024-06-04 15:44:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:47,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:47,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819283396] [2024-06-04 15:44:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819283396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:47,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135130704] [2024-06-04 15:44:47,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:47,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:47,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:47,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:47,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 356 transitions, 4200 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:47,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:47,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:47,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:48,971 INFO L124 PetriNetUnfolderBase]: 3287/5334 cut-off events. [2024-06-04 15:44:48,971 INFO L125 PetriNetUnfolderBase]: For 541891/541891 co-relation queries the response was YES. [2024-06-04 15:44:49,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43028 conditions, 5334 events. 3287/5334 cut-off events. For 541891/541891 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 33418 event pairs, 676 based on Foata normal form. 2/5330 useless extension candidates. Maximal degree in co-relation 42876. Up to 4868 conditions per place. [2024-06-04 15:44:49,037 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 310 selfloop transitions, 84 changer transitions 0/399 dead transitions. [2024-06-04 15:44:49,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 399 transitions, 5956 flow [2024-06-04 15:44:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:44:49,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-04 15:44:49,038 INFO L175 Difference]: Start difference. First operand has 318 places, 356 transitions, 4200 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:44:49,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 399 transitions, 5956 flow [2024-06-04 15:44:50,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 399 transitions, 5627 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-04 15:44:50,905 INFO L231 Difference]: Finished difference. Result has 315 places, 372 transitions, 4437 flow [2024-06-04 15:44:50,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4437, PETRI_PLACES=315, PETRI_TRANSITIONS=372} [2024-06-04 15:44:50,905 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-04 15:44:50,905 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 372 transitions, 4437 flow [2024-06-04 15:44:50,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:50,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:50,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:50,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:44:50,906 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:50,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1178429343, now seen corresponding path program 5 times [2024-06-04 15:44:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488961577] [2024-06-04 15:44:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:50,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:51,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488961577] [2024-06-04 15:44:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488961577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:51,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707821733] [2024-06-04 15:44:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:51,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:51,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:51,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:51,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 372 transitions, 4437 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:51,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:51,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:51,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:52,945 INFO L124 PetriNetUnfolderBase]: 3307/5364 cut-off events. [2024-06-04 15:44:52,945 INFO L125 PetriNetUnfolderBase]: For 555959/555959 co-relation queries the response was YES. [2024-06-04 15:44:52,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42924 conditions, 5364 events. 3307/5364 cut-off events. For 555959/555959 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 33684 event pairs, 675 based on Foata normal form. 2/5360 useless extension candidates. Maximal degree in co-relation 42774. Up to 5049 conditions per place. [2024-06-04 15:44:53,005 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 335 selfloop transitions, 59 changer transitions 0/399 dead transitions. [2024-06-04 15:44:53,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 399 transitions, 5435 flow [2024-06-04 15:44:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 15:44:53,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-04 15:44:53,006 INFO L175 Difference]: Start difference. First operand has 315 places, 372 transitions, 4437 flow. Second operand 8 states and 148 transitions. [2024-06-04 15:44:53,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 399 transitions, 5435 flow [2024-06-04 15:44:54,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 399 transitions, 5266 flow, removed 76 selfloop flow, removed 2 redundant places. [2024-06-04 15:44:54,696 INFO L231 Difference]: Finished difference. Result has 321 places, 380 transitions, 4534 flow [2024-06-04 15:44:54,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4534, PETRI_PLACES=321, PETRI_TRANSITIONS=380} [2024-06-04 15:44:54,697 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-04 15:44:54,697 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 380 transitions, 4534 flow [2024-06-04 15:44:54,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:54,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:54,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:44:54,697 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:54,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:54,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1178429157, now seen corresponding path program 4 times [2024-06-04 15:44:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:54,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973913715] [2024-06-04 15:44:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:54,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:55,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:55,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973913715] [2024-06-04 15:44:55,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973913715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:55,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:55,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:55,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832856933] [2024-06-04 15:44:55,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:55,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:55,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:55,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:55,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:55,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 380 transitions, 4534 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:55,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:55,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:55,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:56,525 INFO L124 PetriNetUnfolderBase]: 3351/5433 cut-off events. [2024-06-04 15:44:56,525 INFO L125 PetriNetUnfolderBase]: For 585703/585703 co-relation queries the response was YES. [2024-06-04 15:44:56,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43755 conditions, 5433 events. 3351/5433 cut-off events. For 585703/585703 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 34198 event pairs, 673 based on Foata normal form. 4/5431 useless extension candidates. Maximal degree in co-relation 43603. Up to 4970 conditions per place. [2024-06-04 15:44:56,592 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 330 selfloop transitions, 77 changer transitions 0/412 dead transitions. [2024-06-04 15:44:56,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 412 transitions, 5969 flow [2024-06-04 15:44:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:56,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 15:44:56,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 15:44:56,593 INFO L175 Difference]: Start difference. First operand has 321 places, 380 transitions, 4534 flow. Second operand 8 states and 156 transitions. [2024-06-04 15:44:56,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 412 transitions, 5969 flow [2024-06-04 15:44:58,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 412 transitions, 5816 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:58,581 INFO L231 Difference]: Finished difference. Result has 325 places, 386 transitions, 4692 flow [2024-06-04 15:44:58,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4381, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4692, PETRI_PLACES=325, PETRI_TRANSITIONS=386} [2024-06-04 15:44:58,582 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-04 15:44:58,582 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 386 transitions, 4692 flow [2024-06-04 15:44:58,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:58,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:58,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:58,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:44:58,583 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:44:58,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:58,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1961001891, now seen corresponding path program 6 times [2024-06-04 15:44:58,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423354032] [2024-06-04 15:44:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:59,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:59,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423354032] [2024-06-04 15:44:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423354032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:59,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:59,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054247869] [2024-06-04 15:44:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:59,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:59,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:44:59,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 386 transitions, 4692 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:59,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:59,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:44:59,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:00,418 INFO L124 PetriNetUnfolderBase]: 3361/5447 cut-off events. [2024-06-04 15:45:00,418 INFO L125 PetriNetUnfolderBase]: For 595468/595468 co-relation queries the response was YES. [2024-06-04 15:45:00,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44453 conditions, 5447 events. 3361/5447 cut-off events. For 595468/595468 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 34306 event pairs, 689 based on Foata normal form. 2/5443 useless extension candidates. Maximal degree in co-relation 44300. Up to 4955 conditions per place. [2024-06-04 15:45:00,492 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 307 selfloop transitions, 102 changer transitions 0/414 dead transitions. [2024-06-04 15:45:00,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 414 transitions, 6044 flow [2024-06-04 15:45:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:00,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 15:45:00,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-04 15:45:00,493 INFO L175 Difference]: Start difference. First operand has 325 places, 386 transitions, 4692 flow. Second operand 8 states and 155 transitions. [2024-06-04 15:45:00,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 414 transitions, 6044 flow [2024-06-04 15:45:02,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 414 transitions, 5834 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-04 15:45:02,429 INFO L231 Difference]: Finished difference. Result has 328 places, 389 transitions, 4761 flow [2024-06-04 15:45:02,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4761, PETRI_PLACES=328, PETRI_TRANSITIONS=389} [2024-06-04 15:45:02,429 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-04 15:45:02,429 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 389 transitions, 4761 flow [2024-06-04 15:45:02,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:02,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:02,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:02,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:45:02,430 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:02,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash -909668643, now seen corresponding path program 7 times [2024-06-04 15:45:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:02,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869408398] [2024-06-04 15:45:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869408398] [2024-06-04 15:45:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869408398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:03,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:03,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416931766] [2024-06-04 15:45:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:03,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:03,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:03,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 389 transitions, 4761 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:03,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:03,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:03,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:04,306 INFO L124 PetriNetUnfolderBase]: 3371/5463 cut-off events. [2024-06-04 15:45:04,306 INFO L125 PetriNetUnfolderBase]: For 602259/602259 co-relation queries the response was YES. [2024-06-04 15:45:04,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44303 conditions, 5463 events. 3371/5463 cut-off events. For 602259/602259 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 34428 event pairs, 677 based on Foata normal form. 2/5459 useless extension candidates. Maximal degree in co-relation 44149. Up to 4965 conditions per place. [2024-06-04 15:45:04,377 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 299 selfloop transitions, 110 changer transitions 0/414 dead transitions. [2024-06-04 15:45:04,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 414 transitions, 5958 flow [2024-06-04 15:45:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 15:45:04,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-04 15:45:04,379 INFO L175 Difference]: Start difference. First operand has 328 places, 389 transitions, 4761 flow. Second operand 8 states and 151 transitions. [2024-06-04 15:45:04,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 414 transitions, 5958 flow [2024-06-04 15:45:06,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 414 transitions, 5684 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 15:45:06,690 INFO L231 Difference]: Finished difference. Result has 330 places, 393 transitions, 4812 flow [2024-06-04 15:45:06,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4812, PETRI_PLACES=330, PETRI_TRANSITIONS=393} [2024-06-04 15:45:06,690 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-04 15:45:06,691 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 393 transitions, 4812 flow [2024-06-04 15:45:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:06,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:06,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:45:06,691 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)] === [2024-06-04 15:45:06,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash -794644383, now seen corresponding path program 8 times [2024-06-04 15:45:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:06,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343513340] [2024-06-04 15:45:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:06,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:07,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343513340] [2024-06-04 15:45:07,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343513340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:07,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:07,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:07,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454137827] [2024-06-04 15:45:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:07,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:07,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:07,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:07,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:07,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 393 transitions, 4812 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:07,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:07,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:07,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:08,686 INFO L124 PetriNetUnfolderBase]: 3407/5531 cut-off events. [2024-06-04 15:45:08,686 INFO L125 PetriNetUnfolderBase]: For 623541/623541 co-relation queries the response was YES. [2024-06-04 15:45:08,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44945 conditions, 5531 events. 3407/5531 cut-off events. For 623541/623541 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 34962 event pairs, 683 based on Foata normal form. 2/5527 useless extension candidates. Maximal degree in co-relation 44791. Up to 5156 conditions per place. [2024-06-04 15:45:08,757 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 346 selfloop transitions, 78 changer transitions 0/429 dead transitions. [2024-06-04 15:45:08,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 429 transitions, 6203 flow [2024-06-04 15:45:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:45:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:45:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-04 15:45:08,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-04 15:45:08,758 INFO L175 Difference]: Start difference. First operand has 330 places, 393 transitions, 4812 flow. Second operand 10 states and 177 transitions. [2024-06-04 15:45:08,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 429 transitions, 6203 flow [2024-06-04 15:45:10,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 429 transitions, 5984 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 15:45:10,832 INFO L231 Difference]: Finished difference. Result has 338 places, 406 transitions, 5034 flow [2024-06-04 15:45:10,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4610, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5034, PETRI_PLACES=338, PETRI_TRANSITIONS=406} [2024-06-04 15:45:10,833 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-04 15:45:10,833 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 406 transitions, 5034 flow [2024-06-04 15:45:10,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:10,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:10,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:10,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:45:10,833 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)] === [2024-06-04 15:45:10,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:10,834 INFO L85 PathProgramCache]: Analyzing trace with hash -794644197, now seen corresponding path program 5 times [2024-06-04 15:45:10,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:10,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739654465] [2024-06-04 15:45:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:10,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:11,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:11,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739654465] [2024-06-04 15:45:11,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739654465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:11,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:11,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:11,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721227885] [2024-06-04 15:45:11,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:11,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:11,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:11,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:11,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 406 transitions, 5034 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:11,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:11,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:11,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:12,729 INFO L124 PetriNetUnfolderBase]: 3459/5609 cut-off events. [2024-06-04 15:45:12,729 INFO L125 PetriNetUnfolderBase]: For 661713/661713 co-relation queries the response was YES. [2024-06-04 15:45:12,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45896 conditions, 5609 events. 3459/5609 cut-off events. For 661713/661713 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 35511 event pairs, 683 based on Foata normal form. 4/5607 useless extension candidates. Maximal degree in co-relation 45739. Up to 5080 conditions per place. [2024-06-04 15:45:12,800 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 348 selfloop transitions, 86 changer transitions 0/439 dead transitions. [2024-06-04 15:45:12,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 439 transitions, 6529 flow [2024-06-04 15:45:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 15:45:12,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-04 15:45:12,801 INFO L175 Difference]: Start difference. First operand has 338 places, 406 transitions, 5034 flow. Second operand 8 states and 155 transitions. [2024-06-04 15:45:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 439 transitions, 6529 flow [2024-06-04 15:45:15,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 439 transitions, 6369 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-04 15:45:15,087 INFO L231 Difference]: Finished difference. Result has 343 places, 412 transitions, 5161 flow [2024-06-04 15:45:15,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4874, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5161, PETRI_PLACES=343, PETRI_TRANSITIONS=412} [2024-06-04 15:45:15,087 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-04 15:45:15,087 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 412 transitions, 5161 flow [2024-06-04 15:45:15,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:15,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:15,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:15,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:45:15,087 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)] === [2024-06-04 15:45:15,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:15,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2088851967, now seen corresponding path program 6 times [2024-06-04 15:45:15,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:15,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806587678] [2024-06-04 15:45:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:15,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:15,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806587678] [2024-06-04 15:45:15,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806587678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:15,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:15,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:15,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751843568] [2024-06-04 15:45:15,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:15,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:15,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:15,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:15,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:15,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:15,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 412 transitions, 5161 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:15,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:15,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:15,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:17,120 INFO L124 PetriNetUnfolderBase]: 3447/5598 cut-off events. [2024-06-04 15:45:17,120 INFO L125 PetriNetUnfolderBase]: For 657628/657628 co-relation queries the response was YES. [2024-06-04 15:45:17,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45597 conditions, 5598 events. 3447/5598 cut-off events. For 657628/657628 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 35528 event pairs, 863 based on Foata normal form. 4/5600 useless extension candidates. Maximal degree in co-relation 45439. Up to 5324 conditions per place. [2024-06-04 15:45:17,193 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 398 selfloop transitions, 26 changer transitions 0/429 dead transitions. [2024-06-04 15:45:17,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 429 transitions, 6079 flow [2024-06-04 15:45:17,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 15:45:17,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:45:17,194 INFO L175 Difference]: Start difference. First operand has 343 places, 412 transitions, 5161 flow. Second operand 8 states and 144 transitions. [2024-06-04 15:45:17,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 429 transitions, 6079 flow [2024-06-04 15:45:20,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 429 transitions, 5890 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-04 15:45:20,021 INFO L231 Difference]: Finished difference. Result has 347 places, 412 transitions, 5030 flow [2024-06-04 15:45:20,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5030, PETRI_PLACES=347, PETRI_TRANSITIONS=412} [2024-06-04 15:45:20,022 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-04 15:45:20,022 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 412 transitions, 5030 flow [2024-06-04 15:45:20,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:20,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:20,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:20,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:45:20,022 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:20,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2088673221, now seen corresponding path program 9 times [2024-06-04 15:45:20,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:20,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776734271] [2024-06-04 15:45:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:20,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776734271] [2024-06-04 15:45:20,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776734271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:20,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:20,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:20,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186187460] [2024-06-04 15:45:20,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:20,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:20,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:20,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:20,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:20,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 412 transitions, 5030 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:20,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:20,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:22,118 INFO L124 PetriNetUnfolderBase]: 3441/5579 cut-off events. [2024-06-04 15:45:22,118 INFO L125 PetriNetUnfolderBase]: For 652643/652643 co-relation queries the response was YES. [2024-06-04 15:45:22,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45075 conditions, 5579 events. 3441/5579 cut-off events. For 652643/652643 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 35304 event pairs, 688 based on Foata normal form. 2/5575 useless extension candidates. Maximal degree in co-relation 44916. Up to 5207 conditions per place. [2024-06-04 15:45:22,184 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 348 selfloop transitions, 77 changer transitions 0/430 dead transitions. [2024-06-04 15:45:22,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 430 transitions, 5968 flow [2024-06-04 15:45:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:45:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:45:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 15:45:22,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-04 15:45:22,185 INFO L175 Difference]: Start difference. First operand has 347 places, 412 transitions, 5030 flow. Second operand 8 states and 146 transitions. [2024-06-04 15:45:22,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 430 transitions, 5968 flow [2024-06-04 15:45:24,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 430 transitions, 5834 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:24,991 INFO L231 Difference]: Finished difference. Result has 348 places, 412 transitions, 5056 flow [2024-06-04 15:45:24,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5056, PETRI_PLACES=348, PETRI_TRANSITIONS=412} [2024-06-04 15:45:24,991 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-04 15:45:24,991 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 412 transitions, 5056 flow [2024-06-04 15:45:24,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:24,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:24,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:24,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:45:24,992 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:24,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash 864271653, now seen corresponding path program 7 times [2024-06-04 15:45:24,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:24,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221887434] [2024-06-04 15:45:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:24,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221887434] [2024-06-04 15:45:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221887434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:25,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161687772] [2024-06-04 15:45:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:25,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:25,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:25,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:25,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 412 transitions, 5056 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:25,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:25,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:25,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:26,978 INFO L124 PetriNetUnfolderBase]: 3461/5620 cut-off events. [2024-06-04 15:45:26,978 INFO L125 PetriNetUnfolderBase]: For 675101/675101 co-relation queries the response was YES. [2024-06-04 15:45:27,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45487 conditions, 5620 events. 3461/5620 cut-off events. For 675101/675101 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 35675 event pairs, 684 based on Foata normal form. 4/5622 useless extension candidates. Maximal degree in co-relation 45327. Up to 5223 conditions per place. [2024-06-04 15:45:27,045 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 375 selfloop transitions, 58 changer transitions 0/438 dead transitions. [2024-06-04 15:45:27,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 438 transitions, 6277 flow [2024-06-04 15:45:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-04 15:45:27,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-04 15:45:27,046 INFO L175 Difference]: Start difference. First operand has 348 places, 412 transitions, 5056 flow. Second operand 7 states and 139 transitions. [2024-06-04 15:45:27,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 438 transitions, 6277 flow [2024-06-04 15:45:29,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 438 transitions, 6123 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:29,625 INFO L231 Difference]: Finished difference. Result has 348 places, 415 transitions, 5100 flow [2024-06-04 15:45:29,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5100, PETRI_PLACES=348, PETRI_TRANSITIONS=415} [2024-06-04 15:45:29,626 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-04 15:45:29,626 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 415 transitions, 5100 flow [2024-06-04 15:45:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:29,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:29,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:29,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:45:29,626 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:29,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash 864271467, now seen corresponding path program 10 times [2024-06-04 15:45:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888236074] [2024-06-04 15:45:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888236074] [2024-06-04 15:45:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888236074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:30,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899830565] [2024-06-04 15:45:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:30,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:30,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:30,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:30,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:30,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 415 transitions, 5100 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:30,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:30,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:30,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:31,639 INFO L124 PetriNetUnfolderBase]: 3455/5610 cut-off events. [2024-06-04 15:45:31,640 INFO L125 PetriNetUnfolderBase]: For 670539/670539 co-relation queries the response was YES. [2024-06-04 15:45:31,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45388 conditions, 5610 events. 3455/5610 cut-off events. For 670539/670539 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 35658 event pairs, 681 based on Foata normal form. 2/5610 useless extension candidates. Maximal degree in co-relation 45227. Up to 5278 conditions per place. [2024-06-04 15:45:31,853 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 386 selfloop transitions, 47 changer transitions 0/438 dead transitions. [2024-06-04 15:45:31,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 438 transitions, 6055 flow [2024-06-04 15:45:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-04 15:45:31,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-04 15:45:31,854 INFO L175 Difference]: Start difference. First operand has 348 places, 415 transitions, 5100 flow. Second operand 7 states and 137 transitions. [2024-06-04 15:45:31,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 438 transitions, 6055 flow [2024-06-04 15:45:34,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 438 transitions, 5871 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-04 15:45:34,917 INFO L231 Difference]: Finished difference. Result has 349 places, 415 transitions, 5032 flow [2024-06-04 15:45:34,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4916, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5032, PETRI_PLACES=349, PETRI_TRANSITIONS=415} [2024-06-04 15:45:34,918 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-04 15:45:34,918 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 415 transitions, 5032 flow [2024-06-04 15:45:34,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:34,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:34,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:45:34,919 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:34,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash 864278163, now seen corresponding path program 8 times [2024-06-04 15:45:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213486204] [2024-06-04 15:45:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:34,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213486204] [2024-06-04 15:45:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213486204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:35,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:35,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425827431] [2024-06-04 15:45:35,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:35,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:35,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:35,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 415 transitions, 5032 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:35,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:35,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:35,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:36,810 INFO L124 PetriNetUnfolderBase]: 3475/5640 cut-off events. [2024-06-04 15:45:36,811 INFO L125 PetriNetUnfolderBase]: For 666362/666362 co-relation queries the response was YES. [2024-06-04 15:45:36,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45282 conditions, 5640 events. 3475/5640 cut-off events. For 666362/666362 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 35826 event pairs, 686 based on Foata normal form. 4/5642 useless extension candidates. Maximal degree in co-relation 45122. Up to 5344 conditions per place. [2024-06-04 15:45:36,887 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 397 selfloop transitions, 35 changer transitions 0/437 dead transitions. [2024-06-04 15:45:36,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 437 transitions, 6048 flow [2024-06-04 15:45:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-04 15:45:36,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-04 15:45:36,889 INFO L175 Difference]: Start difference. First operand has 349 places, 415 transitions, 5032 flow. Second operand 7 states and 131 transitions. [2024-06-04 15:45:36,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 437 transitions, 6048 flow [2024-06-04 15:45:39,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 437 transitions, 5941 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:45:39,646 INFO L231 Difference]: Finished difference. Result has 350 places, 420 transitions, 5095 flow [2024-06-04 15:45:39,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5095, PETRI_PLACES=350, PETRI_TRANSITIONS=420} [2024-06-04 15:45:39,646 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 307 predicate places. [2024-06-04 15:45:39,646 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 420 transitions, 5095 flow [2024-06-04 15:45:39,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:39,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:39,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:39,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:45:39,647 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:39,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1164368517, now seen corresponding path program 9 times [2024-06-04 15:45:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:39,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316332751] [2024-06-04 15:45:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:40,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:40,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316332751] [2024-06-04 15:45:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316332751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:40,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965274578] [2024-06-04 15:45:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:40,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:40,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:40,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:40,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 420 transitions, 5095 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:40,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:40,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:40,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:41,518 INFO L124 PetriNetUnfolderBase]: 3495/5667 cut-off events. [2024-06-04 15:45:41,519 INFO L125 PetriNetUnfolderBase]: For 667399/667399 co-relation queries the response was YES. [2024-06-04 15:45:41,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45512 conditions, 5667 events. 3495/5667 cut-off events. For 667399/667399 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 35985 event pairs, 680 based on Foata normal form. 4/5665 useless extension candidates. Maximal degree in co-relation 45351. Up to 5104 conditions per place. [2024-06-04 15:45:41,595 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 343 selfloop transitions, 99 changer transitions 0/447 dead transitions. [2024-06-04 15:45:41,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 447 transitions, 6532 flow [2024-06-04 15:45:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-04 15:45:41,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-04 15:45:41,596 INFO L175 Difference]: Start difference. First operand has 350 places, 420 transitions, 5095 flow. Second operand 7 states and 141 transitions. [2024-06-04 15:45:41,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 447 transitions, 6532 flow [2024-06-04 15:45:43,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 447 transitions, 6437 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-04 15:45:43,902 INFO L231 Difference]: Finished difference. Result has 353 places, 423 transitions, 5276 flow [2024-06-04 15:45:43,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5004, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5276, PETRI_PLACES=353, PETRI_TRANSITIONS=423} [2024-06-04 15:45:43,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-04 15:45:43,903 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 423 transitions, 5276 flow [2024-06-04 15:45:43,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:43,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:43,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:43,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:45:43,903 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:43,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:43,904 INFO L85 PathProgramCache]: Analyzing trace with hash 877021023, now seen corresponding path program 10 times [2024-06-04 15:45:43,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:43,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481788093] [2024-06-04 15:45:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:43,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:44,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:44,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481788093] [2024-06-04 15:45:44,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481788093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:44,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:44,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:44,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416719059] [2024-06-04 15:45:44,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:44,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:44,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:44,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:44,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 423 transitions, 5276 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:44,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:44,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:44,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:45,818 INFO L124 PetriNetUnfolderBase]: 3483/5662 cut-off events. [2024-06-04 15:45:45,819 INFO L125 PetriNetUnfolderBase]: For 650159/650159 co-relation queries the response was YES. [2024-06-04 15:45:45,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45193 conditions, 5662 events. 3483/5662 cut-off events. For 650159/650159 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 36065 event pairs, 686 based on Foata normal form. 4/5664 useless extension candidates. Maximal degree in co-relation 45032. Up to 5333 conditions per place. [2024-06-04 15:45:45,898 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 393 selfloop transitions, 44 changer transitions 0/442 dead transitions. [2024-06-04 15:45:45,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 442 transitions, 6226 flow [2024-06-04 15:45:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:45:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:45:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-04 15:45:45,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-04 15:45:45,899 INFO L175 Difference]: Start difference. First operand has 353 places, 423 transitions, 5276 flow. Second operand 6 states and 122 transitions. [2024-06-04 15:45:45,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 442 transitions, 6226 flow [2024-06-04 15:45:49,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 442 transitions, 5984 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 15:45:49,115 INFO L231 Difference]: Finished difference. Result has 353 places, 423 transitions, 5150 flow [2024-06-04 15:45:49,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5150, PETRI_PLACES=353, PETRI_TRANSITIONS=423} [2024-06-04 15:45:49,115 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-04 15:45:49,115 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 423 transitions, 5150 flow [2024-06-04 15:45:49,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:49,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:49,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:49,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:45:49,116 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:49,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1164368703, now seen corresponding path program 11 times [2024-06-04 15:45:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:49,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672577074] [2024-06-04 15:45:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:49,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:49,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672577074] [2024-06-04 15:45:49,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672577074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:49,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:49,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497004330] [2024-06-04 15:45:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:49,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:49,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 423 transitions, 5150 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:49,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:49,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:49,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:51,046 INFO L124 PetriNetUnfolderBase]: 3477/5657 cut-off events. [2024-06-04 15:45:51,046 INFO L125 PetriNetUnfolderBase]: For 618984/618984 co-relation queries the response was YES. [2024-06-04 15:45:51,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44411 conditions, 5657 events. 3477/5657 cut-off events. For 618984/618984 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 36009 event pairs, 701 based on Foata normal form. 2/5653 useless extension candidates. Maximal degree in co-relation 44251. Up to 5200 conditions per place. [2024-06-04 15:45:51,124 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 365 selfloop transitions, 78 changer transitions 0/448 dead transitions. [2024-06-04 15:45:51,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 448 transitions, 6346 flow [2024-06-04 15:45:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-04 15:45:51,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-04 15:45:51,125 INFO L175 Difference]: Start difference. First operand has 353 places, 423 transitions, 5150 flow. Second operand 7 states and 140 transitions. [2024-06-04 15:45:51,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 448 transitions, 6346 flow [2024-06-04 15:45:53,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 448 transitions, 6194 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-04 15:45:53,185 INFO L231 Difference]: Finished difference. Result has 355 places, 423 transitions, 5171 flow [2024-06-04 15:45:53,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4998, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5171, PETRI_PLACES=355, PETRI_TRANSITIONS=423} [2024-06-04 15:45:53,186 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-04 15:45:53,186 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 423 transitions, 5171 flow [2024-06-04 15:45:53,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:53,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:53,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:53,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:45:53,186 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:53,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash 877200513, now seen corresponding path program 11 times [2024-06-04 15:45:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:53,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797599077] [2024-06-04 15:45:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:53,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:53,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797599077] [2024-06-04 15:45:53,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797599077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:53,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:53,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:53,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583041632] [2024-06-04 15:45:53,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:53,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:53,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:53,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:53,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:53,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 423 transitions, 5171 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:53,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:53,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:53,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:55,145 INFO L124 PetriNetUnfolderBase]: 3507/5708 cut-off events. [2024-06-04 15:45:55,145 INFO L125 PetriNetUnfolderBase]: For 639584/639584 co-relation queries the response was YES. [2024-06-04 15:45:55,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44947 conditions, 5708 events. 3507/5708 cut-off events. For 639584/639584 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 36460 event pairs, 691 based on Foata normal form. 4/5710 useless extension candidates. Maximal degree in co-relation 44786. Up to 5292 conditions per place. [2024-06-04 15:45:55,223 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 373 selfloop transitions, 76 changer transitions 0/454 dead transitions. [2024-06-04 15:45:55,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 454 transitions, 6280 flow [2024-06-04 15:45:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 15:45:55,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-04 15:45:55,224 INFO L175 Difference]: Start difference. First operand has 355 places, 423 transitions, 5171 flow. Second operand 7 states and 144 transitions. [2024-06-04 15:45:55,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 454 transitions, 6280 flow [2024-06-04 15:45:57,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 454 transitions, 6125 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:45:57,561 INFO L231 Difference]: Finished difference. Result has 356 places, 429 transitions, 5348 flow [2024-06-04 15:45:57,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5016, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5348, PETRI_PLACES=356, PETRI_TRANSITIONS=429} [2024-06-04 15:45:57,561 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-06-04 15:45:57,561 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 429 transitions, 5348 flow [2024-06-04 15:45:57,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:57,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:45:57,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:45:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:45:57,562 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:45:57,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:45:57,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1160355171, now seen corresponding path program 12 times [2024-06-04 15:45:57,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:45:57,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321924115] [2024-06-04 15:45:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:45:57,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:45:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:45:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:45:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:45:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321924115] [2024-06-04 15:45:58,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321924115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:45:58,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:45:58,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:45:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240241790] [2024-06-04 15:45:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:45:58,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:45:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:45:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:45:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:45:58,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:45:58,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 429 transitions, 5348 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:45:58,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:45:58,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:45:58,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:45:59,529 INFO L124 PetriNetUnfolderBase]: 3495/5682 cut-off events. [2024-06-04 15:45:59,529 INFO L125 PetriNetUnfolderBase]: For 623503/623503 co-relation queries the response was YES. [2024-06-04 15:45:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44516 conditions, 5682 events. 3495/5682 cut-off events. For 623503/623503 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 36223 event pairs, 863 based on Foata normal form. 4/5684 useless extension candidates. Maximal degree in co-relation 44356. Up to 5374 conditions per place. [2024-06-04 15:45:59,613 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 408 selfloop transitions, 32 changer transitions 0/445 dead transitions. [2024-06-04 15:45:59,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 445 transitions, 6296 flow [2024-06-04 15:45:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:45:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:45:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-04 15:45:59,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-04 15:45:59,614 INFO L175 Difference]: Start difference. First operand has 356 places, 429 transitions, 5348 flow. Second operand 7 states and 130 transitions. [2024-06-04 15:45:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 445 transitions, 6296 flow [2024-06-04 15:46:02,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 445 transitions, 6141 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-04 15:46:02,216 INFO L231 Difference]: Finished difference. Result has 359 places, 429 transitions, 5267 flow [2024-06-04 15:46:02,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5193, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5267, PETRI_PLACES=359, PETRI_TRANSITIONS=429} [2024-06-04 15:46:02,217 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-04 15:46:02,217 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 429 transitions, 5267 flow [2024-06-04 15:46:02,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:02,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:02,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:02,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:46:02,217 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:02,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1811116671, now seen corresponding path program 12 times [2024-06-04 15:46:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:02,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083072086] [2024-06-04 15:46:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:02,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:02,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083072086] [2024-06-04 15:46:02,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083072086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:02,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:02,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:46:02,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995406925] [2024-06-04 15:46:02,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:02,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:46:02,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:46:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:46:02,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:46:02,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 429 transitions, 5267 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:02,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:02,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:46:02,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:04,113 INFO L124 PetriNetUnfolderBase]: 3489/5681 cut-off events. [2024-06-04 15:46:04,113 INFO L125 PetriNetUnfolderBase]: For 617054/617054 co-relation queries the response was YES. [2024-06-04 15:46:04,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44153 conditions, 5681 events. 3489/5681 cut-off events. For 617054/617054 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 36258 event pairs, 696 based on Foata normal form. 2/5677 useless extension candidates. Maximal degree in co-relation 43992. Up to 5221 conditions per place. [2024-06-04 15:46:04,187 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 363 selfloop transitions, 84 changer transitions 0/452 dead transitions. [2024-06-04 15:46:04,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 452 transitions, 6267 flow [2024-06-04 15:46:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:46:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:46:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 15:46:04,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-04 15:46:04,188 INFO L175 Difference]: Start difference. First operand has 359 places, 429 transitions, 5267 flow. Second operand 7 states and 138 transitions. [2024-06-04 15:46:04,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 452 transitions, 6267 flow [2024-06-04 15:46:06,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 452 transitions, 6042 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-04 15:46:06,840 INFO L231 Difference]: Finished difference. Result has 359 places, 429 transitions, 5222 flow [2024-06-04 15:46:06,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5042, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5222, PETRI_PLACES=359, PETRI_TRANSITIONS=429} [2024-06-04 15:46:06,840 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-04 15:46:06,840 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 429 transitions, 5222 flow [2024-06-04 15:46:06,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:06,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:06,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:06,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:46:06,841 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:06,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -939111333, now seen corresponding path program 2 times [2024-06-04 15:46:06,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:06,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134441355] [2024-06-04 15:46:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:06,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:07,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134441355] [2024-06-04 15:46:07,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134441355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:07,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:46:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16844138] [2024-06-04 15:46:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:07,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:46:07,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:46:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:46:07,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:46:07,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 429 transitions, 5222 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:07,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:07,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:46:07,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:09,050 INFO L124 PetriNetUnfolderBase]: 3533/5750 cut-off events. [2024-06-04 15:46:09,050 INFO L125 PetriNetUnfolderBase]: For 660788/660788 co-relation queries the response was YES. [2024-06-04 15:46:09,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44480 conditions, 5750 events. 3533/5750 cut-off events. For 660788/660788 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 36777 event pairs, 591 based on Foata normal form. 12/5760 useless extension candidates. Maximal degree in co-relation 44320. Up to 5303 conditions per place. [2024-06-04 15:46:09,129 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 412 selfloop transitions, 37 changer transitions 0/454 dead transitions. [2024-06-04 15:46:09,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 454 transitions, 6280 flow [2024-06-04 15:46:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:46:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:46:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-04 15:46:09,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-04 15:46:09,130 INFO L175 Difference]: Start difference. First operand has 359 places, 429 transitions, 5222 flow. Second operand 6 states and 127 transitions. [2024-06-04 15:46:09,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 454 transitions, 6280 flow [2024-06-04 15:46:11,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 454 transitions, 6067 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 15:46:11,351 INFO L231 Difference]: Finished difference. Result has 358 places, 430 transitions, 5112 flow [2024-06-04 15:46:11,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5009, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5112, PETRI_PLACES=358, PETRI_TRANSITIONS=430} [2024-06-04 15:46:11,351 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 315 predicate places. [2024-06-04 15:46:11,352 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 430 transitions, 5112 flow [2024-06-04 15:46:11,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:11,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:11,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:11,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:46:11,352 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:11,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1367208003, now seen corresponding path program 3 times [2024-06-04 15:46:11,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451099984] [2024-06-04 15:46:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:11,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:12,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451099984] [2024-06-04 15:46:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451099984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:12,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:46:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847308581] [2024-06-04 15:46:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:12,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:46:12,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:12,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:46:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:46:12,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:46:12,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 430 transitions, 5112 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:12,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:12,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:46:12,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:13,614 INFO L124 PetriNetUnfolderBase]: 3577/5812 cut-off events. [2024-06-04 15:46:13,614 INFO L125 PetriNetUnfolderBase]: For 661338/661338 co-relation queries the response was YES. [2024-06-04 15:46:13,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44832 conditions, 5812 events. 3577/5812 cut-off events. For 661338/661338 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 37130 event pairs, 698 based on Foata normal form. 12/5822 useless extension candidates. Maximal degree in co-relation 44672. Up to 5341 conditions per place. [2024-06-04 15:46:13,690 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 407 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2024-06-04 15:46:13,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 455 transitions, 6188 flow [2024-06-04 15:46:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:46:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:46:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 15:46:13,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-04 15:46:13,692 INFO L175 Difference]: Start difference. First operand has 358 places, 430 transitions, 5112 flow. Second operand 7 states and 138 transitions. [2024-06-04 15:46:13,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 455 transitions, 6188 flow [2024-06-04 15:46:15,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 455 transitions, 6121 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:46:15,918 INFO L231 Difference]: Finished difference. Result has 361 places, 431 transitions, 5157 flow [2024-06-04 15:46:15,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5157, PETRI_PLACES=361, PETRI_TRANSITIONS=431} [2024-06-04 15:46:15,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-04 15:46:15,919 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 431 transitions, 5157 flow [2024-06-04 15:46:15,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:15,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:15,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:15,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:46:15,919 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:15,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash -923874213, now seen corresponding path program 4 times [2024-06-04 15:46:15,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:15,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099264501] [2024-06-04 15:46:15,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:15,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:16,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:16,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099264501] [2024-06-04 15:46:16,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099264501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:16,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:16,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:46:16,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525853862] [2024-06-04 15:46:16,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:16,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:46:16,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:16,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:46:16,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:46:16,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:46:16,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 431 transitions, 5157 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:16,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:16,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:46:16,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:18,110 INFO L124 PetriNetUnfolderBase]: 3579/5830 cut-off events. [2024-06-04 15:46:18,111 INFO L125 PetriNetUnfolderBase]: For 637788/637788 co-relation queries the response was YES. [2024-06-04 15:46:18,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44690 conditions, 5830 events. 3579/5830 cut-off events. For 637788/637788 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 37349 event pairs, 589 based on Foata normal form. 8/5836 useless extension candidates. Maximal degree in co-relation 44529. Up to 5339 conditions per place. [2024-06-04 15:46:18,181 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 416 selfloop transitions, 40 changer transitions 0/461 dead transitions. [2024-06-04 15:46:18,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 461 transitions, 6287 flow [2024-06-04 15:46:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:46:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:46:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 15:46:18,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-04 15:46:18,183 INFO L175 Difference]: Start difference. First operand has 361 places, 431 transitions, 5157 flow. Second operand 7 states and 144 transitions. [2024-06-04 15:46:18,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 461 transitions, 6287 flow [2024-06-04 15:46:20,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 461 transitions, 6195 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:46:20,300 INFO L231 Difference]: Finished difference. Result has 363 places, 432 transitions, 5169 flow [2024-06-04 15:46:20,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5067, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5169, PETRI_PLACES=363, PETRI_TRANSITIONS=432} [2024-06-04 15:46:20,301 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-04 15:46:20,301 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 432 transitions, 5169 flow [2024-06-04 15:46:20,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:20,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:20,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:20,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:46:20,301 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:20,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1970535011, now seen corresponding path program 1 times [2024-06-04 15:46:20,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:20,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833313509] [2024-06-04 15:46:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833313509] [2024-06-04 15:46:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833313509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:21,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:21,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013284352] [2024-06-04 15:46:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:21,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:46:21,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 432 transitions, 5169 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:21,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:21,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:46:21,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:22,633 INFO L124 PetriNetUnfolderBase]: 3552/5831 cut-off events. [2024-06-04 15:46:22,634 INFO L125 PetriNetUnfolderBase]: For 691586/691601 co-relation queries the response was YES. [2024-06-04 15:46:22,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45499 conditions, 5831 events. 3552/5831 cut-off events. For 691586/691601 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 37896 event pairs, 824 based on Foata normal form. 11/5829 useless extension candidates. Maximal degree in co-relation 45337. Up to 5153 conditions per place. [2024-06-04 15:46:22,710 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 358 selfloop transitions, 67 changer transitions 0/471 dead transitions. [2024-06-04 15:46:22,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 471 transitions, 6613 flow [2024-06-04 15:46:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-04 15:46:22,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-04 15:46:22,711 INFO L175 Difference]: Start difference. First operand has 363 places, 432 transitions, 5169 flow. Second operand 9 states and 183 transitions. [2024-06-04 15:46:22,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 471 transitions, 6613 flow [2024-06-04 15:46:24,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 471 transitions, 6525 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 15:46:24,984 INFO L231 Difference]: Finished difference. Result has 367 places, 434 transitions, 5265 flow [2024-06-04 15:46:24,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5081, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5265, PETRI_PLACES=367, PETRI_TRANSITIONS=434} [2024-06-04 15:46:24,985 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-04 15:46:24,985 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 434 transitions, 5265 flow [2024-06-04 15:46:24,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:24,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:24,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:24,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:46:24,985 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:24,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1970595461, now seen corresponding path program 2 times [2024-06-04 15:46:24,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:24,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160188287] [2024-06-04 15:46:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:24,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160188287] [2024-06-04 15:46:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160188287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:25,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482053723] [2024-06-04 15:46:25,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:25,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:25,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:25,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:46:25,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 434 transitions, 5265 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:25,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:25,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:46:25,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:27,351 INFO L124 PetriNetUnfolderBase]: 3599/5904 cut-off events. [2024-06-04 15:46:27,351 INFO L125 PetriNetUnfolderBase]: For 706830/706845 co-relation queries the response was YES. [2024-06-04 15:46:27,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46015 conditions, 5904 events. 3599/5904 cut-off events. For 706830/706845 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 38383 event pairs, 853 based on Foata normal form. 12/5904 useless extension candidates. Maximal degree in co-relation 45852. Up to 5327 conditions per place. [2024-06-04 15:46:27,432 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 354 selfloop transitions, 68 changer transitions 0/468 dead transitions. [2024-06-04 15:46:27,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 468 transitions, 6480 flow [2024-06-04 15:46:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 15:46:27,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-04 15:46:27,433 INFO L175 Difference]: Start difference. First operand has 367 places, 434 transitions, 5265 flow. Second operand 9 states and 177 transitions. [2024-06-04 15:46:27,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 468 transitions, 6480 flow [2024-06-04 15:46:30,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 468 transitions, 6386 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:46:30,110 INFO L231 Difference]: Finished difference. Result has 371 places, 438 transitions, 5359 flow [2024-06-04 15:46:30,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5359, PETRI_PLACES=371, PETRI_TRANSITIONS=438} [2024-06-04 15:46:30,110 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 328 predicate places. [2024-06-04 15:46:30,111 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 438 transitions, 5359 flow [2024-06-04 15:46:30,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:30,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:30,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:30,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:46:30,111 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:30,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1973391971, now seen corresponding path program 3 times [2024-06-04 15:46:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:30,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169828433] [2024-06-04 15:46:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:31,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:31,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169828433] [2024-06-04 15:46:31,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169828433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:31,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214311388] [2024-06-04 15:46:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:31,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:46:31,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 438 transitions, 5359 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:31,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:31,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:46:31,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:32,492 INFO L124 PetriNetUnfolderBase]: 3665/6012 cut-off events. [2024-06-04 15:46:32,492 INFO L125 PetriNetUnfolderBase]: For 769083/769111 co-relation queries the response was YES. [2024-06-04 15:46:32,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47327 conditions, 6012 events. 3665/6012 cut-off events. For 769083/769111 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 39180 event pairs, 871 based on Foata normal form. 21/6017 useless extension candidates. Maximal degree in co-relation 47162. Up to 5448 conditions per place. [2024-06-04 15:46:32,571 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 374 selfloop transitions, 47 changer transitions 0/467 dead transitions. [2024-06-04 15:46:32,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 467 transitions, 6405 flow [2024-06-04 15:46:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-04 15:46:32,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-04 15:46:32,572 INFO L175 Difference]: Start difference. First operand has 371 places, 438 transitions, 5359 flow. Second operand 9 states and 172 transitions. [2024-06-04 15:46:32,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 467 transitions, 6405 flow [2024-06-04 15:46:35,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 467 transitions, 6293 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:46:35,681 INFO L231 Difference]: Finished difference. Result has 375 places, 440 transitions, 5402 flow [2024-06-04 15:46:35,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5247, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5402, PETRI_PLACES=375, PETRI_TRANSITIONS=440} [2024-06-04 15:46:35,681 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-04 15:46:35,681 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 440 transitions, 5402 flow [2024-06-04 15:46:35,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:35,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:35,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:35,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:46:35,681 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:35,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2088683141, now seen corresponding path program 4 times [2024-06-04 15:46:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:35,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415661181] [2024-06-04 15:46:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:35,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:36,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415661181] [2024-06-04 15:46:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415661181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:36,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:36,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:36,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012500976] [2024-06-04 15:46:36,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:36,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:36,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:36,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:46:36,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 440 transitions, 5402 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:36,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:36,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:46:36,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:38,194 INFO L124 PetriNetUnfolderBase]: 3736/6123 cut-off events. [2024-06-04 15:46:38,194 INFO L125 PetriNetUnfolderBase]: For 775752/775756 co-relation queries the response was YES. [2024-06-04 15:46:38,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48215 conditions, 6123 events. 3736/6123 cut-off events. For 775752/775756 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39994 event pairs, 884 based on Foata normal form. 21/6130 useless extension candidates. Maximal degree in co-relation 48049. Up to 5588 conditions per place. [2024-06-04 15:46:38,273 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 385 selfloop transitions, 35 changer transitions 0/466 dead transitions. [2024-06-04 15:46:38,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 466 transitions, 6440 flow [2024-06-04 15:46:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:46:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:46:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 15:46:38,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-04 15:46:38,274 INFO L175 Difference]: Start difference. First operand has 375 places, 440 transitions, 5402 flow. Second operand 9 states and 168 transitions. [2024-06-04 15:46:38,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 466 transitions, 6440 flow [2024-06-04 15:46:41,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 466 transitions, 6314 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:46:41,262 INFO L231 Difference]: Finished difference. Result has 376 places, 442 transitions, 5411 flow [2024-06-04 15:46:41,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5276, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5411, PETRI_PLACES=376, PETRI_TRANSITIONS=442} [2024-06-04 15:46:41,262 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-04 15:46:41,262 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 442 transitions, 5411 flow [2024-06-04 15:46:41,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:41,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:41,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:41,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:46:41,263 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:41,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2088867839, now seen corresponding path program 1 times [2024-06-04 15:46:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:41,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691817719] [2024-06-04 15:46:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:41,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:42,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:42,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691817719] [2024-06-04 15:46:42,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691817719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:42,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:42,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:42,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197583267] [2024-06-04 15:46:42,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:42,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:42,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:42,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:46:42,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 442 transitions, 5411 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:42,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:42,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:46:42,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:43,646 INFO L124 PetriNetUnfolderBase]: 3859/6254 cut-off events. [2024-06-04 15:46:43,646 INFO L125 PetriNetUnfolderBase]: For 696896/696896 co-relation queries the response was YES. [2024-06-04 15:46:43,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49198 conditions, 6254 events. 3859/6254 cut-off events. For 696896/696896 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40256 event pairs, 943 based on Foata normal form. 2/6254 useless extension candidates. Maximal degree in co-relation 49031. Up to 5966 conditions per place. [2024-06-04 15:46:43,732 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 427 selfloop transitions, 28 changer transitions 0/460 dead transitions. [2024-06-04 15:46:43,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 460 transitions, 6421 flow [2024-06-04 15:46:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:46:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:46:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-04 15:46:43,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-04 15:46:43,733 INFO L175 Difference]: Start difference. First operand has 376 places, 442 transitions, 5411 flow. Second operand 8 states and 142 transitions. [2024-06-04 15:46:43,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 460 transitions, 6421 flow [2024-06-04 15:46:47,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 460 transitions, 6342 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:46:47,082 INFO L231 Difference]: Finished difference. Result has 377 places, 444 transitions, 5447 flow [2024-06-04 15:46:47,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5447, PETRI_PLACES=377, PETRI_TRANSITIONS=444} [2024-06-04 15:46:47,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-04 15:46:47,083 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 444 transitions, 5447 flow [2024-06-04 15:46:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:47,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:47,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:47,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:46:47,083 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:47,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1811126591, now seen corresponding path program 5 times [2024-06-04 15:46:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:47,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17008964] [2024-06-04 15:46:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:47,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:47,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:47,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17008964] [2024-06-04 15:46:47,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17008964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:47,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:47,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:47,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718306195] [2024-06-04 15:46:47,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:48,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-04 15:46:48,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 444 transitions, 5447 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:48,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:48,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-04 15:46:48,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:49,504 INFO L124 PetriNetUnfolderBase]: 3725/6112 cut-off events. [2024-06-04 15:46:49,504 INFO L125 PetriNetUnfolderBase]: For 705242/705246 co-relation queries the response was YES. [2024-06-04 15:46:49,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47090 conditions, 6112 events. 3725/6112 cut-off events. For 705242/705246 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39958 event pairs, 861 based on Foata normal form. 13/6111 useless extension candidates. Maximal degree in co-relation 46922. Up to 5545 conditions per place. [2024-06-04 15:46:49,596 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 381 selfloop transitions, 48 changer transitions 0/475 dead transitions. [2024-06-04 15:46:49,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 475 transitions, 6641 flow [2024-06-04 15:46:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:46:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:46:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-04 15:46:49,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-04 15:46:49,597 INFO L175 Difference]: Start difference. First operand has 377 places, 444 transitions, 5447 flow. Second operand 8 states and 165 transitions. [2024-06-04 15:46:49,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 475 transitions, 6641 flow [2024-06-04 15:46:52,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 475 transitions, 6534 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 15:46:52,183 INFO L231 Difference]: Finished difference. Result has 379 places, 444 transitions, 5446 flow [2024-06-04 15:46:52,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5340, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5446, PETRI_PLACES=379, PETRI_TRANSITIONS=444} [2024-06-04 15:46:52,183 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-04 15:46:52,183 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 444 transitions, 5446 flow [2024-06-04 15:46:52,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:52,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:52,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:52,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:46:52,184 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:52,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1817567399, now seen corresponding path program 2 times [2024-06-04 15:46:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:52,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28244719] [2024-06-04 15:46:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:52,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28244719] [2024-06-04 15:46:52,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28244719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:52,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:52,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:46:52,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803251233] [2024-06-04 15:46:52,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:52,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:46:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:46:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:46:53,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:46:53,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 444 transitions, 5446 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:53,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:53,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:46:53,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:54,329 INFO L124 PetriNetUnfolderBase]: 3849/6234 cut-off events. [2024-06-04 15:46:54,329 INFO L125 PetriNetUnfolderBase]: For 659876/659876 co-relation queries the response was YES. [2024-06-04 15:46:54,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48059 conditions, 6234 events. 3849/6234 cut-off events. For 659876/659876 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40146 event pairs, 923 based on Foata normal form. 2/6234 useless extension candidates. Maximal degree in co-relation 47890. Up to 5948 conditions per place. [2024-06-04 15:46:54,421 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 426 selfloop transitions, 28 changer transitions 0/459 dead transitions. [2024-06-04 15:46:54,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 459 transitions, 6448 flow [2024-06-04 15:46:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:46:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:46:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-04 15:46:54,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-04 15:46:54,422 INFO L175 Difference]: Start difference. First operand has 379 places, 444 transitions, 5446 flow. Second operand 6 states and 113 transitions. [2024-06-04 15:46:54,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 459 transitions, 6448 flow [2024-06-04 15:46:57,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 459 transitions, 6370 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 15:46:57,213 INFO L231 Difference]: Finished difference. Result has 380 places, 446 transitions, 5491 flow [2024-06-04 15:46:57,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5491, PETRI_PLACES=380, PETRI_TRANSITIONS=446} [2024-06-04 15:46:57,213 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-04 15:46:57,213 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 446 transitions, 5491 flow [2024-06-04 15:46:57,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 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) [2024-06-04 15:46:57,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:46:57,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:46:57,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:46:57,214 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:46:57,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:46:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash -923867269, now seen corresponding path program 3 times [2024-06-04 15:46:57,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:46:57,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893411829] [2024-06-04 15:46:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:46:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:46:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:46:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:46:58,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:46:58,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893411829] [2024-06-04 15:46:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893411829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:46:58,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:46:58,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:46:58,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75864826] [2024-06-04 15:46:58,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:46:58,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:46:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:46:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:46:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:46:58,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:46:58,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 446 transitions, 5491 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:46:58,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:46:58,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:46:58,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:46:59,399 INFO L124 PetriNetUnfolderBase]: 3857/6258 cut-off events. [2024-06-04 15:46:59,399 INFO L125 PetriNetUnfolderBase]: For 671725/671725 co-relation queries the response was YES. [2024-06-04 15:46:59,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48256 conditions, 6258 events. 3857/6258 cut-off events. For 671725/671725 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 40356 event pairs, 940 based on Foata normal form. 2/6258 useless extension candidates. Maximal degree in co-relation 48086. Up to 5990 conditions per place. [2024-06-04 15:46:59,487 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 438 selfloop transitions, 15 changer transitions 0/458 dead transitions. [2024-06-04 15:46:59,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 458 transitions, 6481 flow [2024-06-04 15:46:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:46:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:46:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-04 15:46:59,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:46:59,488 INFO L175 Difference]: Start difference. First operand has 380 places, 446 transitions, 5491 flow. Second operand 6 states and 108 transitions. [2024-06-04 15:46:59,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 458 transitions, 6481 flow [2024-06-04 15:47:03,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 458 transitions, 6376 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-04 15:47:03,010 INFO L231 Difference]: Finished difference. Result has 382 places, 448 transitions, 5483 flow [2024-06-04 15:47:03,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5483, PETRI_PLACES=382, PETRI_TRANSITIONS=448} [2024-06-04 15:47:03,011 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-04 15:47:03,011 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 448 transitions, 5483 flow [2024-06-04 15:47:03,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:03,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:03,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:03,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:47:03,011 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:03,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash -924164187, now seen corresponding path program 1 times [2024-06-04 15:47:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:03,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405358275] [2024-06-04 15:47:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:03,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:03,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405358275] [2024-06-04 15:47:03,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405358275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:03,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:03,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851032944] [2024-06-04 15:47:03,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:03,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:03,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:03,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 448 transitions, 5483 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:03,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:03,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:03,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:05,292 INFO L124 PetriNetUnfolderBase]: 3842/6219 cut-off events. [2024-06-04 15:47:05,292 INFO L125 PetriNetUnfolderBase]: For 660188/660188 co-relation queries the response was YES. [2024-06-04 15:47:05,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47798 conditions, 6219 events. 3842/6219 cut-off events. For 660188/660188 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40001 event pairs, 944 based on Foata normal form. 1/6218 useless extension candidates. Maximal degree in co-relation 47627. Up to 5923 conditions per place. [2024-06-04 15:47:05,385 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 423 selfloop transitions, 36 changer transitions 0/464 dead transitions. [2024-06-04 15:47:05,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 464 transitions, 6455 flow [2024-06-04 15:47:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:47:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:47:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-04 15:47:05,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-04 15:47:05,385 INFO L175 Difference]: Start difference. First operand has 382 places, 448 transitions, 5483 flow. Second operand 6 states and 120 transitions. [2024-06-04 15:47:05,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 464 transitions, 6455 flow [2024-06-04 15:47:08,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 464 transitions, 6348 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-04 15:47:08,759 INFO L231 Difference]: Finished difference. Result has 384 places, 448 transitions, 5466 flow [2024-06-04 15:47:08,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5466, PETRI_PLACES=384, PETRI_TRANSITIONS=448} [2024-06-04 15:47:08,759 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-04 15:47:08,760 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 448 transitions, 5466 flow [2024-06-04 15:47:08,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:08,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:08,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:08,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:47:08,760 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:08,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:08,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1153852549, now seen corresponding path program 4 times [2024-06-04 15:47:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891941176] [2024-06-04 15:47:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:08,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:09,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:09,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891941176] [2024-06-04 15:47:09,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891941176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:09,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:09,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:09,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887428310] [2024-06-04 15:47:09,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:09,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:09,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:09,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:09,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:09,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:09,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 448 transitions, 5466 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:09,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:09,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:09,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:11,018 INFO L124 PetriNetUnfolderBase]: 3837/6216 cut-off events. [2024-06-04 15:47:11,018 INFO L125 PetriNetUnfolderBase]: For 665808/665808 co-relation queries the response was YES. [2024-06-04 15:47:11,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47603 conditions, 6216 events. 3837/6216 cut-off events. For 665808/665808 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 40002 event pairs, 921 based on Foata normal form. 2/6216 useless extension candidates. Maximal degree in co-relation 47431. Up to 5916 conditions per place. [2024-06-04 15:47:11,122 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 423 selfloop transitions, 35 changer transitions 0/463 dead transitions. [2024-06-04 15:47:11,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 463 transitions, 6480 flow [2024-06-04 15:47:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:47:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:47:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-04 15:47:11,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:47:11,123 INFO L175 Difference]: Start difference. First operand has 384 places, 448 transitions, 5466 flow. Second operand 6 states and 114 transitions. [2024-06-04 15:47:11,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 463 transitions, 6480 flow [2024-06-04 15:47:14,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 463 transitions, 6378 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:47:14,580 INFO L231 Difference]: Finished difference. Result has 383 places, 450 transitions, 5508 flow [2024-06-04 15:47:14,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5508, PETRI_PLACES=383, PETRI_TRANSITIONS=450} [2024-06-04 15:47:14,581 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-04 15:47:14,581 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 450 transitions, 5508 flow [2024-06-04 15:47:14,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:14,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:14,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:47:14,581 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:14,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1542473665, now seen corresponding path program 1 times [2024-06-04 15:47:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491813493] [2024-06-04 15:47:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:14,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:15,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491813493] [2024-06-04 15:47:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491813493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:15,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244925866] [2024-06-04 15:47:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:15,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:15,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 450 transitions, 5508 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:15,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:15,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:15,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:16,958 INFO L124 PetriNetUnfolderBase]: 3863/6260 cut-off events. [2024-06-04 15:47:16,958 INFO L125 PetriNetUnfolderBase]: For 677761/677761 co-relation queries the response was YES. [2024-06-04 15:47:17,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48245 conditions, 6260 events. 3863/6260 cut-off events. For 677761/677761 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 40353 event pairs, 760 based on Foata normal form. 2/6260 useless extension candidates. Maximal degree in co-relation 48073. Up to 5827 conditions per place. [2024-06-04 15:47:17,056 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 410 selfloop transitions, 73 changer transitions 0/488 dead transitions. [2024-06-04 15:47:17,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 488 transitions, 6978 flow [2024-06-04 15:47:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:47:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:47:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-04 15:47:17,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-04 15:47:17,057 INFO L175 Difference]: Start difference. First operand has 383 places, 450 transitions, 5508 flow. Second operand 10 states and 187 transitions. [2024-06-04 15:47:17,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 488 transitions, 6978 flow [2024-06-04 15:47:20,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 488 transitions, 6860 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-04 15:47:20,117 INFO L231 Difference]: Finished difference. Result has 390 places, 458 transitions, 5757 flow [2024-06-04 15:47:20,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5757, PETRI_PLACES=390, PETRI_TRANSITIONS=458} [2024-06-04 15:47:20,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-04 15:47:20,118 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 458 transitions, 5757 flow [2024-06-04 15:47:20,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:20,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:20,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:20,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:47:20,118 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:20,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:20,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1973112906, now seen corresponding path program 1 times [2024-06-04 15:47:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494034840] [2024-06-04 15:47:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:20,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:20,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:20,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494034840] [2024-06-04 15:47:20,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494034840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:20,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586282994] [2024-06-04 15:47:20,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:20,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:20,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:20,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:20,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 458 transitions, 5757 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:20,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:20,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:20,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:22,360 INFO L124 PetriNetUnfolderBase]: 3915/6330 cut-off events. [2024-06-04 15:47:22,360 INFO L125 PetriNetUnfolderBase]: For 721057/721057 co-relation queries the response was YES. [2024-06-04 15:47:22,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50433 conditions, 6330 events. 3915/6330 cut-off events. For 721057/721057 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 40759 event pairs, 762 based on Foata normal form. 4/6332 useless extension candidates. Maximal degree in co-relation 50259. Up to 5756 conditions per place. [2024-06-04 15:47:22,458 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 410 selfloop transitions, 80 changer transitions 0/495 dead transitions. [2024-06-04 15:47:22,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 495 transitions, 7287 flow [2024-06-04 15:47:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 15:47:22,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-04 15:47:22,459 INFO L175 Difference]: Start difference. First operand has 390 places, 458 transitions, 5757 flow. Second operand 9 states and 175 transitions. [2024-06-04 15:47:22,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 495 transitions, 7287 flow [2024-06-04 15:47:25,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 495 transitions, 7107 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-04 15:47:25,268 INFO L231 Difference]: Finished difference. Result has 393 places, 464 transitions, 5921 flow [2024-06-04 15:47:25,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5577, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5921, PETRI_PLACES=393, PETRI_TRANSITIONS=464} [2024-06-04 15:47:25,268 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-04 15:47:25,268 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 464 transitions, 5921 flow [2024-06-04 15:47:25,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:25,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:25,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:25,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:47:25,268 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:25,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -420840570, now seen corresponding path program 2 times [2024-06-04 15:47:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:25,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123958926] [2024-06-04 15:47:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:25,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123958926] [2024-06-04 15:47:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123958926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:26,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146142228] [2024-06-04 15:47:26,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:26,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:26,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:26,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 464 transitions, 5921 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:26,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:26,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:27,762 INFO L124 PetriNetUnfolderBase]: 3967/6400 cut-off events. [2024-06-04 15:47:27,762 INFO L125 PetriNetUnfolderBase]: For 765155/765155 co-relation queries the response was YES. [2024-06-04 15:47:27,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52327 conditions, 6400 events. 3967/6400 cut-off events. For 765155/765155 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41225 event pairs, 758 based on Foata normal form. 4/6402 useless extension candidates. Maximal degree in co-relation 52151. Up to 5933 conditions per place. [2024-06-04 15:47:27,856 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 427 selfloop transitions, 68 changer transitions 0/500 dead transitions. [2024-06-04 15:47:27,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 500 transitions, 7478 flow [2024-06-04 15:47:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 15:47:27,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-04 15:47:27,857 INFO L175 Difference]: Start difference. First operand has 393 places, 464 transitions, 5921 flow. Second operand 9 states and 173 transitions. [2024-06-04 15:47:27,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 500 transitions, 7478 flow [2024-06-04 15:47:31,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 500 transitions, 7258 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-04 15:47:31,674 INFO L231 Difference]: Finished difference. Result has 397 places, 470 transitions, 6033 flow [2024-06-04 15:47:31,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6033, PETRI_PLACES=397, PETRI_TRANSITIONS=470} [2024-06-04 15:47:31,674 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-04 15:47:31,675 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 470 transitions, 6033 flow [2024-06-04 15:47:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:31,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:31,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:31,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:47:31,675 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:31,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -420834990, now seen corresponding path program 3 times [2024-06-04 15:47:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:31,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64131688] [2024-06-04 15:47:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:31,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:32,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:32,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64131688] [2024-06-04 15:47:32,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64131688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:32,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:32,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:32,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811214188] [2024-06-04 15:47:32,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:32,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:32,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:32,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:32,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 470 transitions, 6033 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:32,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:32,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:32,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:34,099 INFO L124 PetriNetUnfolderBase]: 3955/6384 cut-off events. [2024-06-04 15:47:34,099 INFO L125 PetriNetUnfolderBase]: For 752383/752383 co-relation queries the response was YES. [2024-06-04 15:47:34,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51681 conditions, 6384 events. 3955/6384 cut-off events. For 752383/752383 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41176 event pairs, 764 based on Foata normal form. 4/6386 useless extension candidates. Maximal degree in co-relation 51503. Up to 5925 conditions per place. [2024-06-04 15:47:34,194 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 427 selfloop transitions, 70 changer transitions 0/502 dead transitions. [2024-06-04 15:47:34,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 502 transitions, 7222 flow [2024-06-04 15:47:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:47:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:47:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-04 15:47:34,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-04 15:47:34,195 INFO L175 Difference]: Start difference. First operand has 397 places, 470 transitions, 6033 flow. Second operand 11 states and 200 transitions. [2024-06-04 15:47:34,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 502 transitions, 7222 flow [2024-06-04 15:47:38,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 502 transitions, 7044 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-04 15:47:38,039 INFO L231 Difference]: Finished difference. Result has 403 places, 470 transitions, 6001 flow [2024-06-04 15:47:38,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5855, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6001, PETRI_PLACES=403, PETRI_TRANSITIONS=470} [2024-06-04 15:47:38,040 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 360 predicate places. [2024-06-04 15:47:38,040 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 470 transitions, 6001 flow [2024-06-04 15:47:38,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:38,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:38,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:38,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:47:38,041 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:38,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2026865773, now seen corresponding path program 2 times [2024-06-04 15:47:38,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:38,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075008852] [2024-06-04 15:47:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:38,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:38,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075008852] [2024-06-04 15:47:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075008852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:38,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:38,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573751051] [2024-06-04 15:47:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:38,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:39,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:39,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 470 transitions, 6001 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:39,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:39,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:39,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:40,593 INFO L124 PetriNetUnfolderBase]: 3965/6398 cut-off events. [2024-06-04 15:47:40,594 INFO L125 PetriNetUnfolderBase]: For 751682/751682 co-relation queries the response was YES. [2024-06-04 15:47:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51863 conditions, 6398 events. 3965/6398 cut-off events. For 751682/751682 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41208 event pairs, 765 based on Foata normal form. 2/6398 useless extension candidates. Maximal degree in co-relation 51683. Up to 6071 conditions per place. [2024-06-04 15:47:40,697 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 446 selfloop transitions, 45 changer transitions 0/496 dead transitions. [2024-06-04 15:47:40,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 496 transitions, 7148 flow [2024-06-04 15:47:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:47:40,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-04 15:47:40,698 INFO L175 Difference]: Start difference. First operand has 403 places, 470 transitions, 6001 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:47:40,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 496 transitions, 7148 flow [2024-06-04 15:47:44,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 496 transitions, 6993 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:47:44,328 INFO L231 Difference]: Finished difference. Result has 402 places, 474 transitions, 6029 flow [2024-06-04 15:47:44,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5846, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6029, PETRI_PLACES=402, PETRI_TRANSITIONS=474} [2024-06-04 15:47:44,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-04 15:47:44,329 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 474 transitions, 6029 flow [2024-06-04 15:47:44,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:44,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:44,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:44,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:47:44,329 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)] === [2024-06-04 15:47:44,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash 775269254, now seen corresponding path program 4 times [2024-06-04 15:47:44,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:44,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779185908] [2024-06-04 15:47:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:44,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:45,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:45,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779185908] [2024-06-04 15:47:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779185908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:45,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:45,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679740995] [2024-06-04 15:47:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:45,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:45,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:45,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:45,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:45,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:45,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 474 transitions, 6029 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:45,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:45,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:45,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:46,790 INFO L124 PetriNetUnfolderBase]: 4017/6478 cut-off events. [2024-06-04 15:47:46,790 INFO L125 PetriNetUnfolderBase]: For 800872/800872 co-relation queries the response was YES. [2024-06-04 15:47:46,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53046 conditions, 6478 events. 4017/6478 cut-off events. For 800872/800872 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 41794 event pairs, 778 based on Foata normal form. 4/6480 useless extension candidates. Maximal degree in co-relation 52865. Up to 6092 conditions per place. [2024-06-04 15:47:46,896 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 453 selfloop transitions, 47 changer transitions 0/505 dead transitions. [2024-06-04 15:47:46,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 505 transitions, 7534 flow [2024-06-04 15:47:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:47:46,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-04 15:47:46,897 INFO L175 Difference]: Start difference. First operand has 402 places, 474 transitions, 6029 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:47:46,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 505 transitions, 7534 flow [2024-06-04 15:47:50,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 505 transitions, 7391 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 15:47:50,439 INFO L231 Difference]: Finished difference. Result has 404 places, 480 transitions, 6144 flow [2024-06-04 15:47:50,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5886, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6144, PETRI_PLACES=404, PETRI_TRANSITIONS=480} [2024-06-04 15:47:50,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 361 predicate places. [2024-06-04 15:47:50,439 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 480 transitions, 6144 flow [2024-06-04 15:47:50,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:50,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:50,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:50,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:47:50,440 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:50,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1064626657, now seen corresponding path program 1 times [2024-06-04 15:47:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:50,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13770880] [2024-06-04 15:47:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13770880] [2024-06-04 15:47:51,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13770880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:51,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:51,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:51,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237740007] [2024-06-04 15:47:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:51,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:51,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:51,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:51,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 480 transitions, 6144 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:51,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:51,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:51,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:52,910 INFO L124 PetriNetUnfolderBase]: 4027/6486 cut-off events. [2024-06-04 15:47:52,910 INFO L125 PetriNetUnfolderBase]: For 802253/802253 co-relation queries the response was YES. [2024-06-04 15:47:52,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53320 conditions, 6486 events. 4027/6486 cut-off events. For 802253/802253 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 41807 event pairs, 770 based on Foata normal form. 2/6486 useless extension candidates. Maximal degree in co-relation 53138. Up to 6168 conditions per place. [2024-06-04 15:47:53,012 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 461 selfloop transitions, 43 changer transitions 0/509 dead transitions. [2024-06-04 15:47:53,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 509 transitions, 7400 flow [2024-06-04 15:47:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:47:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:47:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 15:47:53,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-04 15:47:53,013 INFO L175 Difference]: Start difference. First operand has 404 places, 480 transitions, 6144 flow. Second operand 8 states and 148 transitions. [2024-06-04 15:47:53,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 509 transitions, 7400 flow [2024-06-04 15:47:57,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 509 transitions, 7274 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-04 15:47:57,101 INFO L231 Difference]: Finished difference. Result has 409 places, 491 transitions, 6338 flow [2024-06-04 15:47:57,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6018, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6338, PETRI_PLACES=409, PETRI_TRANSITIONS=491} [2024-06-04 15:47:57,102 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 366 predicate places. [2024-06-04 15:47:57,102 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 491 transitions, 6338 flow [2024-06-04 15:47:57,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:57,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:47:57,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:47:57,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:47:57,102 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:47:57,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:47:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1071991699, now seen corresponding path program 3 times [2024-06-04 15:47:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:47:57,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966847137] [2024-06-04 15:47:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:47:57,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:47:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:47:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:47:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:47:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966847137] [2024-06-04 15:47:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966847137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:47:58,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:47:58,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:47:58,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637919698] [2024-06-04 15:47:58,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:47:58,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:47:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:47:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:47:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:47:58,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:47:58,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 491 transitions, 6338 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:47:58,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:47:58,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:47:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:47:59,812 INFO L124 PetriNetUnfolderBase]: 4037/6490 cut-off events. [2024-06-04 15:47:59,812 INFO L125 PetriNetUnfolderBase]: For 819331/819331 co-relation queries the response was YES. [2024-06-04 15:47:59,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54292 conditions, 6490 events. 4037/6490 cut-off events. For 819331/819331 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 41704 event pairs, 780 based on Foata normal form. 2/6490 useless extension candidates. Maximal degree in co-relation 54106. Up to 6208 conditions per place. [2024-06-04 15:47:59,911 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 477 selfloop transitions, 32 changer transitions 0/514 dead transitions. [2024-06-04 15:47:59,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 514 transitions, 7523 flow [2024-06-04 15:47:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:47:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:47:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-04 15:47:59,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-04 15:47:59,913 INFO L175 Difference]: Start difference. First operand has 409 places, 491 transitions, 6338 flow. Second operand 9 states and 158 transitions. [2024-06-04 15:47:59,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 514 transitions, 7523 flow [2024-06-04 15:48:04,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 514 transitions, 7377 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-04 15:48:04,257 INFO L231 Difference]: Finished difference. Result has 414 places, 495 transitions, 6357 flow [2024-06-04 15:48:04,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6192, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6357, PETRI_PLACES=414, PETRI_TRANSITIONS=495} [2024-06-04 15:48:04,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 371 predicate places. [2024-06-04 15:48:04,258 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 495 transitions, 6357 flow [2024-06-04 15:48:04,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:04,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:04,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:04,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:48:04,259 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:04,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:04,259 INFO L85 PathProgramCache]: Analyzing trace with hash 782626484, now seen corresponding path program 5 times [2024-06-04 15:48:04,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:04,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394437615] [2024-06-04 15:48:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:04,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:04,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394437615] [2024-06-04 15:48:04,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394437615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:04,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:04,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380650850] [2024-06-04 15:48:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:05,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:05,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 495 transitions, 6357 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:05,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:05,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:05,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:06,717 INFO L124 PetriNetUnfolderBase]: 4057/6516 cut-off events. [2024-06-04 15:48:06,717 INFO L125 PetriNetUnfolderBase]: For 846152/846152 co-relation queries the response was YES. [2024-06-04 15:48:06,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54565 conditions, 6516 events. 4057/6516 cut-off events. For 846152/846152 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41837 event pairs, 775 based on Foata normal form. 4/6518 useless extension candidates. Maximal degree in co-relation 54378. Up to 6210 conditions per place. [2024-06-04 15:48:06,826 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 478 selfloop transitions, 36 changer transitions 0/519 dead transitions. [2024-06-04 15:48:06,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 519 transitions, 7561 flow [2024-06-04 15:48:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-04 15:48:06,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-04 15:48:06,827 INFO L175 Difference]: Start difference. First operand has 414 places, 495 transitions, 6357 flow. Second operand 9 states and 161 transitions. [2024-06-04 15:48:06,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 519 transitions, 7561 flow [2024-06-04 15:48:11,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 519 transitions, 7448 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 15:48:11,288 INFO L231 Difference]: Finished difference. Result has 417 places, 498 transitions, 6394 flow [2024-06-04 15:48:11,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6244, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6394, PETRI_PLACES=417, PETRI_TRANSITIONS=498} [2024-06-04 15:48:11,288 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-04 15:48:11,288 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 498 transitions, 6394 flow [2024-06-04 15:48:11,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:11,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:11,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:11,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:48:11,289 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:11,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash 775274834, now seen corresponding path program 6 times [2024-06-04 15:48:11,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:11,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578266059] [2024-06-04 15:48:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:11,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:12,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:12,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578266059] [2024-06-04 15:48:12,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578266059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:12,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:12,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:12,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238487261] [2024-06-04 15:48:12,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:12,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:12,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:12,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:12,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 498 transitions, 6394 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:12,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:12,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:12,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:13,883 INFO L124 PetriNetUnfolderBase]: 4045/6498 cut-off events. [2024-06-04 15:48:13,883 INFO L125 PetriNetUnfolderBase]: For 835926/835926 co-relation queries the response was YES. [2024-06-04 15:48:13,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54058 conditions, 6498 events. 4045/6498 cut-off events. For 835926/835926 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41721 event pairs, 775 based on Foata normal form. 4/6500 useless extension candidates. Maximal degree in co-relation 53870. Up to 6128 conditions per place. [2024-06-04 15:48:13,975 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 468 selfloop transitions, 49 changer transitions 0/522 dead transitions. [2024-06-04 15:48:13,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 522 transitions, 7575 flow [2024-06-04 15:48:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:48:13,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-04 15:48:13,976 INFO L175 Difference]: Start difference. First operand has 417 places, 498 transitions, 6394 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:48:13,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 522 transitions, 7575 flow [2024-06-04 15:48:18,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 522 transitions, 7421 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-04 15:48:18,866 INFO L231 Difference]: Finished difference. Result has 419 places, 498 transitions, 6344 flow [2024-06-04 15:48:18,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6240, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6344, PETRI_PLACES=419, PETRI_TRANSITIONS=498} [2024-06-04 15:48:18,867 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 376 predicate places. [2024-06-04 15:48:18,867 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 498 transitions, 6344 flow [2024-06-04 15:48:18,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:18,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:18,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:18,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:48:18,867 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:18,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:18,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1766268657, now seen corresponding path program 4 times [2024-06-04 15:48:18,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:18,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786767721] [2024-06-04 15:48:18,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:18,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:19,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:19,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786767721] [2024-06-04 15:48:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786767721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:19,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923293060] [2024-06-04 15:48:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:19,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:19,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:19,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:19,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 498 transitions, 6344 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:19,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:19,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:19,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:21,610 INFO L124 PetriNetUnfolderBase]: 4079/6542 cut-off events. [2024-06-04 15:48:21,610 INFO L125 PetriNetUnfolderBase]: For 857614/857614 co-relation queries the response was YES. [2024-06-04 15:48:21,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54903 conditions, 6542 events. 4079/6542 cut-off events. For 857614/857614 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 42019 event pairs, 786 based on Foata normal form. 2/6533 useless extension candidates. Maximal degree in co-relation 54714. Up to 5691 conditions per place. [2024-06-04 15:48:21,714 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 349 selfloop transitions, 201 changer transitions 0/555 dead transitions. [2024-06-04 15:48:21,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 555 transitions, 8772 flow [2024-06-04 15:48:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:48:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:48:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-04 15:48:21,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45670995670995673 [2024-06-04 15:48:21,716 INFO L175 Difference]: Start difference. First operand has 419 places, 498 transitions, 6344 flow. Second operand 11 states and 211 transitions. [2024-06-04 15:48:21,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 555 transitions, 8772 flow [2024-06-04 15:48:25,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 555 transitions, 8649 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:48:25,792 INFO L231 Difference]: Finished difference. Result has 425 places, 521 transitions, 7315 flow [2024-06-04 15:48:25,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6221, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7315, PETRI_PLACES=425, PETRI_TRANSITIONS=521} [2024-06-04 15:48:25,792 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 382 predicate places. [2024-06-04 15:48:25,793 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 521 transitions, 7315 flow [2024-06-04 15:48:25,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:25,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:25,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:25,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:48:25,793 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:25,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash 958907115, now seen corresponding path program 5 times [2024-06-04 15:48:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836192404] [2024-06-04 15:48:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:26,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:26,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836192404] [2024-06-04 15:48:26,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836192404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:26,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:26,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642690752] [2024-06-04 15:48:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:26,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:26,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:26,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 521 transitions, 7315 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:26,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:26,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:26,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:28,342 INFO L124 PetriNetUnfolderBase]: 4102/6580 cut-off events. [2024-06-04 15:48:28,342 INFO L125 PetriNetUnfolderBase]: For 887511/887511 co-relation queries the response was YES. [2024-06-04 15:48:28,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57629 conditions, 6580 events. 4102/6580 cut-off events. For 887511/887511 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 42287 event pairs, 779 based on Foata normal form. 1/6575 useless extension candidates. Maximal degree in co-relation 57436. Up to 6070 conditions per place. [2024-06-04 15:48:28,450 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 461 selfloop transitions, 129 changer transitions 0/595 dead transitions. [2024-06-04 15:48:28,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 595 transitions, 9883 flow [2024-06-04 15:48:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:48:28,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-04 15:48:28,451 INFO L175 Difference]: Start difference. First operand has 425 places, 521 transitions, 7315 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:48:28,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 595 transitions, 9883 flow [2024-06-04 15:48:32,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 595 transitions, 9401 flow, removed 173 selfloop flow, removed 6 redundant places. [2024-06-04 15:48:32,560 INFO L231 Difference]: Finished difference. Result has 430 places, 572 transitions, 8145 flow [2024-06-04 15:48:32,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8145, PETRI_PLACES=430, PETRI_TRANSITIONS=572} [2024-06-04 15:48:32,560 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-04 15:48:32,560 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 572 transitions, 8145 flow [2024-06-04 15:48:32,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:32,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:32,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:32,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:48:32,561 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:32,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 661517450, now seen corresponding path program 7 times [2024-06-04 15:48:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751669164] [2024-06-04 15:48:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:33,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:33,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751669164] [2024-06-04 15:48:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751669164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:33,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:33,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046281496] [2024-06-04 15:48:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:33,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:33,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:33,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 572 transitions, 8145 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:33,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:33,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:33,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:35,112 INFO L124 PetriNetUnfolderBase]: 4178/6689 cut-off events. [2024-06-04 15:48:35,112 INFO L125 PetriNetUnfolderBase]: For 974016/974016 co-relation queries the response was YES. [2024-06-04 15:48:35,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60234 conditions, 6689 events. 4178/6689 cut-off events. For 974016/974016 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 42953 event pairs, 757 based on Foata normal form. 4/6687 useless extension candidates. Maximal degree in co-relation 60038. Up to 5598 conditions per place. [2024-06-04 15:48:35,226 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 416 selfloop transitions, 193 changer transitions 0/614 dead transitions. [2024-06-04 15:48:35,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 614 transitions, 10409 flow [2024-06-04 15:48:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-04 15:48:35,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-04 15:48:35,227 INFO L175 Difference]: Start difference. First operand has 430 places, 572 transitions, 8145 flow. Second operand 9 states and 178 transitions. [2024-06-04 15:48:35,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 614 transitions, 10409 flow [2024-06-04 15:48:39,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 614 transitions, 10258 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-04 15:48:39,750 INFO L231 Difference]: Finished difference. Result has 437 places, 581 transitions, 8753 flow [2024-06-04 15:48:39,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8054, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8753, PETRI_PLACES=437, PETRI_TRANSITIONS=581} [2024-06-04 15:48:39,751 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-04 15:48:39,751 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 581 transitions, 8753 flow [2024-06-04 15:48:39,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:39,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:39,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:39,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:48:39,751 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:39,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1299845867, now seen corresponding path program 6 times [2024-06-04 15:48:39,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:39,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638631890] [2024-06-04 15:48:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:40,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:40,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638631890] [2024-06-04 15:48:40,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638631890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:40,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:40,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202159628] [2024-06-04 15:48:40,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:40,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:40,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:40,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:40,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 581 transitions, 8753 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:40,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:40,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:40,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:42,682 INFO L124 PetriNetUnfolderBase]: 4175/6687 cut-off events. [2024-06-04 15:48:42,682 INFO L125 PetriNetUnfolderBase]: For 965085/965085 co-relation queries the response was YES. [2024-06-04 15:48:42,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60819 conditions, 6687 events. 4175/6687 cut-off events. For 965085/965085 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 43010 event pairs, 785 based on Foata normal form. 1/6682 useless extension candidates. Maximal degree in co-relation 60621. Up to 6261 conditions per place. [2024-06-04 15:48:42,775 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 517 selfloop transitions, 88 changer transitions 0/610 dead transitions. [2024-06-04 15:48:42,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 610 transitions, 10332 flow [2024-06-04 15:48:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:48:42,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-04 15:48:42,776 INFO L175 Difference]: Start difference. First operand has 437 places, 581 transitions, 8753 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:48:42,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 610 transitions, 10332 flow [2024-06-04 15:48:47,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 610 transitions, 10029 flow, removed 96 selfloop flow, removed 4 redundant places. [2024-06-04 15:48:47,459 INFO L231 Difference]: Finished difference. Result has 443 places, 585 transitions, 8708 flow [2024-06-04 15:48:47,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8464, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8708, PETRI_PLACES=443, PETRI_TRANSITIONS=585} [2024-06-04 15:48:47,460 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-04 15:48:47,460 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 585 transitions, 8708 flow [2024-06-04 15:48:47,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:47,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:47,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:47,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:48:47,460 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:47,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:47,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1045598925, now seen corresponding path program 7 times [2024-06-04 15:48:47,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:47,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300478240] [2024-06-04 15:48:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:47,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:48,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:48,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300478240] [2024-06-04 15:48:48,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300478240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:48,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:48,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:48,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467590636] [2024-06-04 15:48:48,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:48,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:48,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:48,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 585 transitions, 8708 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:48,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:48,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:50,402 INFO L124 PetriNetUnfolderBase]: 4211/6739 cut-off events. [2024-06-04 15:48:50,402 INFO L125 PetriNetUnfolderBase]: For 995136/995136 co-relation queries the response was YES. [2024-06-04 15:48:50,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61446 conditions, 6739 events. 4211/6739 cut-off events. For 995136/995136 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 43361 event pairs, 787 based on Foata normal form. 2/6735 useless extension candidates. Maximal degree in co-relation 61245. Up to 6159 conditions per place. [2024-06-04 15:48:50,519 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 449 selfloop transitions, 174 changer transitions 0/628 dead transitions. [2024-06-04 15:48:50,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 628 transitions, 10644 flow [2024-06-04 15:48:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:48:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:48:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-04 15:48:50,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-04 15:48:50,520 INFO L175 Difference]: Start difference. First operand has 443 places, 585 transitions, 8708 flow. Second operand 10 states and 182 transitions. [2024-06-04 15:48:50,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 628 transitions, 10644 flow [2024-06-04 15:48:55,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 628 transitions, 10435 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 15:48:55,142 INFO L231 Difference]: Finished difference. Result has 449 places, 604 transitions, 9290 flow [2024-06-04 15:48:55,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8516, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9290, PETRI_PLACES=449, PETRI_TRANSITIONS=604} [2024-06-04 15:48:55,143 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-04 15:48:55,143 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 604 transitions, 9290 flow [2024-06-04 15:48:55,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:55,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:48:55,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:48:55,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:48:55,143 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:48:55,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:48:55,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1299936077, now seen corresponding path program 8 times [2024-06-04 15:48:55,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:48:55,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614455667] [2024-06-04 15:48:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:48:55,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:48:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:48:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:48:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:48:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614455667] [2024-06-04 15:48:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614455667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:48:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:48:56,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:48:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319593208] [2024-06-04 15:48:56,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:48:56,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:48:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:48:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:48:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:48:56,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:48:56,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 604 transitions, 9290 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:48:56,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:48:56,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:48:56,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:48:57,890 INFO L124 PetriNetUnfolderBase]: 4205/6733 cut-off events. [2024-06-04 15:48:57,890 INFO L125 PetriNetUnfolderBase]: For 996888/996888 co-relation queries the response was YES. [2024-06-04 15:48:57,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61444 conditions, 6733 events. 4205/6733 cut-off events. For 996888/996888 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 43347 event pairs, 783 based on Foata normal form. 2/6729 useless extension candidates. Maximal degree in co-relation 61242. Up to 6176 conditions per place. [2024-06-04 15:48:58,003 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 479 selfloop transitions, 142 changer transitions 0/626 dead transitions. [2024-06-04 15:48:58,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 626 transitions, 10604 flow [2024-06-04 15:48:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:48:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:48:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:48:58,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-04 15:48:58,004 INFO L175 Difference]: Start difference. First operand has 449 places, 604 transitions, 9290 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:48:58,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 626 transitions, 10604 flow [2024-06-04 15:49:02,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 626 transitions, 10105 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:02,982 INFO L231 Difference]: Finished difference. Result has 451 places, 604 transitions, 9085 flow [2024-06-04 15:49:02,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8791, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9085, PETRI_PLACES=451, PETRI_TRANSITIONS=604} [2024-06-04 15:49:02,982 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-04 15:49:02,982 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 604 transitions, 9085 flow [2024-06-04 15:49:02,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:02,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:02,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:02,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:49:02,982 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:02,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1299936232, now seen corresponding path program 8 times [2024-06-04 15:49:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:02,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767773612] [2024-06-04 15:49:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:02,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:03,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:03,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767773612] [2024-06-04 15:49:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767773612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:03,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:03,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572845055] [2024-06-04 15:49:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:03,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:03,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:03,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:49:03,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 604 transitions, 9085 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:03,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:03,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:49:03,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:05,520 INFO L124 PetriNetUnfolderBase]: 4225/6759 cut-off events. [2024-06-04 15:49:05,520 INFO L125 PetriNetUnfolderBase]: For 1027379/1027379 co-relation queries the response was YES. [2024-06-04 15:49:05,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61714 conditions, 6759 events. 4225/6759 cut-off events. For 1027379/1027379 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 43493 event pairs, 769 based on Foata normal form. 4/6757 useless extension candidates. Maximal degree in co-relation 61511. Up to 5652 conditions per place. [2024-06-04 15:49:05,651 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 452 selfloop transitions, 183 changer transitions 0/640 dead transitions. [2024-06-04 15:49:05,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 640 transitions, 11385 flow [2024-06-04 15:49:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:05,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-04 15:49:05,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-04 15:49:05,652 INFO L175 Difference]: Start difference. First operand has 451 places, 604 transitions, 9085 flow. Second operand 9 states and 180 transitions. [2024-06-04 15:49:05,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 640 transitions, 11385 flow [2024-06-04 15:49:11,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 640 transitions, 11099 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:11,246 INFO L231 Difference]: Finished difference. Result has 453 places, 607 transitions, 9266 flow [2024-06-04 15:49:11,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8799, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9266, PETRI_PLACES=453, PETRI_TRANSITIONS=607} [2024-06-04 15:49:11,247 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 410 predicate places. [2024-06-04 15:49:11,247 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 607 transitions, 9266 flow [2024-06-04 15:49:11,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:11,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:11,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:49:11,247 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:11,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1303660882, now seen corresponding path program 9 times [2024-06-04 15:49:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210619806] [2024-06-04 15:49:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:12,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:12,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210619806] [2024-06-04 15:49:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210619806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:12,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:12,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932294918] [2024-06-04 15:49:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:12,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:49:12,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 607 transitions, 9266 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:12,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:12,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:49:12,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:14,029 INFO L124 PetriNetUnfolderBase]: 4277/6849 cut-off events. [2024-06-04 15:49:14,029 INFO L125 PetriNetUnfolderBase]: For 1078041/1078041 co-relation queries the response was YES. [2024-06-04 15:49:14,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63631 conditions, 6849 events. 4277/6849 cut-off events. For 1078041/1078041 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 44266 event pairs, 757 based on Foata normal form. 4/6847 useless extension candidates. Maximal degree in co-relation 63427. Up to 6198 conditions per place. [2024-06-04 15:49:14,149 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 527 selfloop transitions, 114 changer transitions 0/646 dead transitions. [2024-06-04 15:49:14,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 646 transitions, 11246 flow [2024-06-04 15:49:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:49:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:49:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-04 15:49:14,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2024-06-04 15:49:14,150 INFO L175 Difference]: Start difference. First operand has 453 places, 607 transitions, 9266 flow. Second operand 11 states and 202 transitions. [2024-06-04 15:49:14,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 646 transitions, 11246 flow [2024-06-04 15:49:19,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 646 transitions, 10635 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:19,508 INFO L231 Difference]: Finished difference. Result has 457 places, 613 transitions, 9095 flow [2024-06-04 15:49:19,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9095, PETRI_PLACES=457, PETRI_TRANSITIONS=613} [2024-06-04 15:49:19,509 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 414 predicate places. [2024-06-04 15:49:19,509 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 613 transitions, 9095 flow [2024-06-04 15:49:19,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:19,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:19,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:19,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:49:19,510 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:19,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1303655147, now seen corresponding path program 9 times [2024-06-04 15:49:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:19,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718243964] [2024-06-04 15:49:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:20,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718243964] [2024-06-04 15:49:20,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718243964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:20,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:20,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412952837] [2024-06-04 15:49:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:20,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:20,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:49:20,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 613 transitions, 9095 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:20,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:20,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:49:20,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:22,462 INFO L124 PetriNetUnfolderBase]: 4287/6861 cut-off events. [2024-06-04 15:49:22,462 INFO L125 PetriNetUnfolderBase]: For 1073264/1073264 co-relation queries the response was YES. [2024-06-04 15:49:22,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63087 conditions, 6861 events. 4287/6861 cut-off events. For 1073264/1073264 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 44304 event pairs, 807 based on Foata normal form. 2/6857 useless extension candidates. Maximal degree in co-relation 62882. Up to 6466 conditions per place. [2024-06-04 15:49:22,588 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 561 selfloop transitions, 73 changer transitions 0/639 dead transitions. [2024-06-04 15:49:22,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 639 transitions, 10594 flow [2024-06-04 15:49:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:49:22,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-04 15:49:22,589 INFO L175 Difference]: Start difference. First operand has 457 places, 613 transitions, 9095 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:49:22,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 639 transitions, 10594 flow [2024-06-04 15:49:27,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 639 transitions, 10393 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-04 15:49:27,841 INFO L231 Difference]: Finished difference. Result has 459 places, 619 transitions, 9221 flow [2024-06-04 15:49:27,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8894, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9221, PETRI_PLACES=459, PETRI_TRANSITIONS=619} [2024-06-04 15:49:27,841 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-04 15:49:27,841 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 619 transitions, 9221 flow [2024-06-04 15:49:27,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:27,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:27,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:27,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:49:27,842 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:27,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1045302410, now seen corresponding path program 10 times [2024-06-04 15:49:27,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:27,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403716988] [2024-06-04 15:49:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:27,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:28,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403716988] [2024-06-04 15:49:28,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403716988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:28,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:28,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:28,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161419581] [2024-06-04 15:49:28,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:28,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:28,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:28,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:49:28,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 619 transitions, 9221 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:28,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:28,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:49:28,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:30,632 INFO L124 PetriNetUnfolderBase]: 4339/6933 cut-off events. [2024-06-04 15:49:30,632 INFO L125 PetriNetUnfolderBase]: For 1132185/1132185 co-relation queries the response was YES. [2024-06-04 15:49:30,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64362 conditions, 6933 events. 4339/6933 cut-off events. For 1132185/1132185 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 44777 event pairs, 749 based on Foata normal form. 4/6931 useless extension candidates. Maximal degree in co-relation 64155. Up to 5746 conditions per place. [2024-06-04 15:49:30,749 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 444 selfloop transitions, 210 changer transitions 0/659 dead transitions. [2024-06-04 15:49:30,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 659 transitions, 11419 flow [2024-06-04 15:49:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-04 15:49:30,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-04 15:49:30,750 INFO L175 Difference]: Start difference. First operand has 459 places, 619 transitions, 9221 flow. Second operand 9 states and 177 transitions. [2024-06-04 15:49:30,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 659 transitions, 11419 flow [2024-06-04 15:49:36,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 659 transitions, 11178 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-04 15:49:36,893 INFO L231 Difference]: Finished difference. Result has 462 places, 625 transitions, 9539 flow [2024-06-04 15:49:36,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8980, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9539, PETRI_PLACES=462, PETRI_TRANSITIONS=625} [2024-06-04 15:49:36,893 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 419 predicate places. [2024-06-04 15:49:36,894 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 625 transitions, 9539 flow [2024-06-04 15:49:36,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:36,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:36,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:36,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:49:36,894 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:36,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1303655302, now seen corresponding path program 11 times [2024-06-04 15:49:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:36,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005466456] [2024-06-04 15:49:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:36,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:37,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:37,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005466456] [2024-06-04 15:49:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005466456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:37,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:37,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:37,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625714417] [2024-06-04 15:49:37,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:37,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:37,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:37,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:37,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:37,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:49:37,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 625 transitions, 9539 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:37,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:37,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:49:37,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:39,905 INFO L124 PetriNetUnfolderBase]: 4327/6931 cut-off events. [2024-06-04 15:49:39,905 INFO L125 PetriNetUnfolderBase]: For 1121665/1121665 co-relation queries the response was YES. [2024-06-04 15:49:39,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 6931 events. 4327/6931 cut-off events. For 1121665/1121665 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 44887 event pairs, 759 based on Foata normal form. 4/6929 useless extension candidates. Maximal degree in co-relation 64214. Up to 6276 conditions per place. [2024-06-04 15:49:40,010 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 538 selfloop transitions, 112 changer transitions 0/655 dead transitions. [2024-06-04 15:49:40,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 655 transitions, 11091 flow [2024-06-04 15:49:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 15:49:40,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-04 15:49:40,011 INFO L175 Difference]: Start difference. First operand has 462 places, 625 transitions, 9539 flow. Second operand 9 states and 173 transitions. [2024-06-04 15:49:40,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 655 transitions, 11091 flow [2024-06-04 15:49:45,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 655 transitions, 10701 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-04 15:49:45,694 INFO L231 Difference]: Finished difference. Result has 466 places, 625 transitions, 9380 flow [2024-06-04 15:49:45,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9149, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9380, PETRI_PLACES=466, PETRI_TRANSITIONS=625} [2024-06-04 15:49:45,695 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 423 predicate places. [2024-06-04 15:49:45,695 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 625 transitions, 9380 flow [2024-06-04 15:49:45,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:45,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:45,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:45,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:49:45,695 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:45,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1045747880, now seen corresponding path program 12 times [2024-06-04 15:49:45,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:45,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76459209] [2024-06-04 15:49:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:45,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:46,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:46,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76459209] [2024-06-04 15:49:46,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76459209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:46,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:46,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018189077] [2024-06-04 15:49:46,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:46,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:46,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:46,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:46,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:49:46,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 625 transitions, 9380 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:46,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:46,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:49:46,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:48,477 INFO L124 PetriNetUnfolderBase]: 4315/6910 cut-off events. [2024-06-04 15:49:48,477 INFO L125 PetriNetUnfolderBase]: For 1103774/1103774 co-relation queries the response was YES. [2024-06-04 15:49:48,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63404 conditions, 6910 events. 4315/6910 cut-off events. For 1103774/1103774 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 44776 event pairs, 945 based on Foata normal form. 4/6912 useless extension candidates. Maximal degree in co-relation 63195. Up to 6544 conditions per place. [2024-06-04 15:49:48,592 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 596 selfloop transitions, 46 changer transitions 0/647 dead transitions. [2024-06-04 15:49:48,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 647 transitions, 10766 flow [2024-06-04 15:49:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 15:49:48,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-04 15:49:48,593 INFO L175 Difference]: Start difference. First operand has 466 places, 625 transitions, 9380 flow. Second operand 9 states and 164 transitions. [2024-06-04 15:49:48,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 647 transitions, 10766 flow [2024-06-04 15:49:54,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 647 transitions, 10500 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 15:49:54,443 INFO L231 Difference]: Finished difference. Result has 467 places, 625 transitions, 9212 flow [2024-06-04 15:49:54,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9114, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9212, PETRI_PLACES=467, PETRI_TRANSITIONS=625} [2024-06-04 15:49:54,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-04 15:49:54,444 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 625 transitions, 9212 flow [2024-06-04 15:49:54,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:54,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:49:54,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:49:54,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:49:54,444 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:49:54,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:49:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1914746044, now seen corresponding path program 13 times [2024-06-04 15:49:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:49:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082035637] [2024-06-04 15:49:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:49:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:49:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:49:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:49:55,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:49:55,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082035637] [2024-06-04 15:49:55,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082035637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:49:55,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:49:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:49:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380990059] [2024-06-04 15:49:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:49:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:49:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:49:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:49:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:49:55,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:49:55,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 625 transitions, 9212 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:49:55,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:49:55,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:49:55,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:49:57,390 INFO L124 PetriNetUnfolderBase]: 4345/6948 cut-off events. [2024-06-04 15:49:57,390 INFO L125 PetriNetUnfolderBase]: For 1119219/1119219 co-relation queries the response was YES. [2024-06-04 15:49:57,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63543 conditions, 6948 events. 4345/6948 cut-off events. For 1119219/1119219 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 44976 event pairs, 961 based on Foata normal form. 4/6950 useless extension candidates. Maximal degree in co-relation 63333. Up to 6617 conditions per place. [2024-06-04 15:49:57,520 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 609 selfloop transitions, 37 changer transitions 0/651 dead transitions. [2024-06-04 15:49:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 651 transitions, 10710 flow [2024-06-04 15:49:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:49:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:49:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 15:49:57,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:49:57,521 INFO L175 Difference]: Start difference. First operand has 467 places, 625 transitions, 9212 flow. Second operand 9 states and 162 transitions. [2024-06-04 15:49:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 651 transitions, 10710 flow [2024-06-04 15:50:03,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 651 transitions, 10489 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-04 15:50:03,150 INFO L231 Difference]: Finished difference. Result has 467 places, 631 transitions, 9185 flow [2024-06-04 15:50:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8997, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9185, PETRI_PLACES=467, PETRI_TRANSITIONS=631} [2024-06-04 15:50:03,150 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-04 15:50:03,150 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 631 transitions, 9185 flow [2024-06-04 15:50:03,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:03,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:03,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:03,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:50:03,150 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:03,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:03,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1144103086, now seen corresponding path program 14 times [2024-06-04 15:50:03,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:03,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562698860] [2024-06-04 15:50:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:03,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:03,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:03,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562698860] [2024-06-04 15:50:03,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562698860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:03,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:03,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:03,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269726601] [2024-06-04 15:50:03,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:03,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:03,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:50:03,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 631 transitions, 9185 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:03,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:03,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:50:03,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:05,882 INFO L124 PetriNetUnfolderBase]: 4429/7079 cut-off events. [2024-06-04 15:50:05,882 INFO L125 PetriNetUnfolderBase]: For 1203424/1203424 co-relation queries the response was YES. [2024-06-04 15:50:05,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65834 conditions, 7079 events. 4429/7079 cut-off events. For 1203424/1203424 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 45930 event pairs, 755 based on Foata normal form. 4/7077 useless extension candidates. Maximal degree in co-relation 65623. Up to 6247 conditions per place. [2024-06-04 15:50:06,017 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 523 selfloop transitions, 144 changer transitions 0/672 dead transitions. [2024-06-04 15:50:06,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 672 transitions, 11522 flow [2024-06-04 15:50:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 15:50:06,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-04 15:50:06,018 INFO L175 Difference]: Start difference. First operand has 467 places, 631 transitions, 9185 flow. Second operand 9 states and 173 transitions. [2024-06-04 15:50:06,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 672 transitions, 11522 flow [2024-06-04 15:50:12,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 672 transitions, 11394 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-04 15:50:12,090 INFO L231 Difference]: Finished difference. Result has 471 places, 640 transitions, 9635 flow [2024-06-04 15:50:12,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9057, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9635, PETRI_PLACES=471, PETRI_TRANSITIONS=640} [2024-06-04 15:50:12,091 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 428 predicate places. [2024-06-04 15:50:12,091 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 640 transitions, 9635 flow [2024-06-04 15:50:12,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:12,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:12,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:12,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:50:12,092 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:12,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:12,092 INFO L85 PathProgramCache]: Analyzing trace with hash 316092754, now seen corresponding path program 15 times [2024-06-04 15:50:12,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:12,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085013662] [2024-06-04 15:50:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:12,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:12,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085013662] [2024-06-04 15:50:12,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085013662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:12,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:12,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:12,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429656876] [2024-06-04 15:50:12,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:12,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:50:12,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 640 transitions, 9635 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:12,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:12,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:50:12,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:14,943 INFO L124 PetriNetUnfolderBase]: 4481/7161 cut-off events. [2024-06-04 15:50:14,943 INFO L125 PetriNetUnfolderBase]: For 1257310/1257310 co-relation queries the response was YES. [2024-06-04 15:50:15,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67827 conditions, 7161 events. 4481/7161 cut-off events. For 1257310/1257310 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 46554 event pairs, 761 based on Foata normal form. 4/7159 useless extension candidates. Maximal degree in co-relation 67614. Up to 6287 conditions per place. [2024-06-04 15:50:15,064 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 528 selfloop transitions, 156 changer transitions 0/689 dead transitions. [2024-06-04 15:50:15,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 689 transitions, 12087 flow [2024-06-04 15:50:15,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:50:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:50:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-04 15:50:15,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-04 15:50:15,065 INFO L175 Difference]: Start difference. First operand has 471 places, 640 transitions, 9635 flow. Second operand 12 states and 222 transitions. [2024-06-04 15:50:15,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 689 transitions, 12087 flow [2024-06-04 15:50:22,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 689 transitions, 11889 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-04 15:50:22,079 INFO L231 Difference]: Finished difference. Result has 479 places, 646 transitions, 9927 flow [2024-06-04 15:50:22,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9449, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9927, PETRI_PLACES=479, PETRI_TRANSITIONS=646} [2024-06-04 15:50:22,079 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 436 predicate places. [2024-06-04 15:50:22,079 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 646 transitions, 9927 flow [2024-06-04 15:50:22,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:22,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:22,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:22,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:50:22,080 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:22,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:22,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1144102931, now seen corresponding path program 10 times [2024-06-04 15:50:22,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119689257] [2024-06-04 15:50:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119689257] [2024-06-04 15:50:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119689257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:22,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110622482] [2024-06-04 15:50:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:22,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:22,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:22,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:23,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:50:23,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 646 transitions, 9927 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:23,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:23,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:50:23,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:25,207 INFO L124 PetriNetUnfolderBase]: 4491/7171 cut-off events. [2024-06-04 15:50:25,207 INFO L125 PetriNetUnfolderBase]: For 1258801/1258801 co-relation queries the response was YES. [2024-06-04 15:50:25,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68456 conditions, 7171 events. 4491/7171 cut-off events. For 1258801/1258801 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 46589 event pairs, 845 based on Foata normal form. 2/7167 useless extension candidates. Maximal degree in co-relation 68241. Up to 6725 conditions per place. [2024-06-04 15:50:25,318 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 576 selfloop transitions, 91 changer transitions 0/672 dead transitions. [2024-06-04 15:50:25,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 672 transitions, 11490 flow [2024-06-04 15:50:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-04 15:50:25,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-04 15:50:25,318 INFO L175 Difference]: Start difference. First operand has 479 places, 646 transitions, 9927 flow. Second operand 9 states and 161 transitions. [2024-06-04 15:50:25,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 672 transitions, 11490 flow [2024-06-04 15:50:31,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 672 transitions, 11141 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-04 15:50:31,899 INFO L231 Difference]: Finished difference. Result has 480 places, 652 transitions, 9923 flow [2024-06-04 15:50:31,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9578, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9923, PETRI_PLACES=480, PETRI_TRANSITIONS=652} [2024-06-04 15:50:31,899 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 437 predicate places. [2024-06-04 15:50:31,899 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 652 transitions, 9923 flow [2024-06-04 15:50:31,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:31,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:31,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:31,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:50:31,900 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:31,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:31,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1144399601, now seen corresponding path program 11 times [2024-06-04 15:50:31,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:31,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615589281] [2024-06-04 15:50:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:31,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:32,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615589281] [2024-06-04 15:50:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615589281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:32,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966419193] [2024-06-04 15:50:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:32,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:32,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:32,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:50:32,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 652 transitions, 9923 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:32,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:32,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:50:32,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:34,839 INFO L124 PetriNetUnfolderBase]: 4504/7189 cut-off events. [2024-06-04 15:50:34,839 INFO L125 PetriNetUnfolderBase]: For 1274545/1274545 co-relation queries the response was YES. [2024-06-04 15:50:34,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68388 conditions, 7189 events. 4504/7189 cut-off events. For 1274545/1274545 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 46685 event pairs, 847 based on Foata normal form. 1/7184 useless extension candidates. Maximal degree in co-relation 68172. Up to 6788 conditions per place. [2024-06-04 15:50:34,961 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 600 selfloop transitions, 75 changer transitions 0/680 dead transitions. [2024-06-04 15:50:34,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 680 transitions, 11803 flow [2024-06-04 15:50:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:50:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:50:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-04 15:50:34,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-04 15:50:34,962 INFO L175 Difference]: Start difference. First operand has 480 places, 652 transitions, 9923 flow. Second operand 9 states and 158 transitions. [2024-06-04 15:50:34,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 680 transitions, 11803 flow [2024-06-04 15:50:42,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 680 transitions, 11531 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-04 15:50:42,231 INFO L231 Difference]: Finished difference. Result has 484 places, 664 transitions, 10090 flow [2024-06-04 15:50:42,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9651, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10090, PETRI_PLACES=484, PETRI_TRANSITIONS=664} [2024-06-04 15:50:42,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 441 predicate places. [2024-06-04 15:50:42,232 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 664 transitions, 10090 flow [2024-06-04 15:50:42,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:42,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:42,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:42,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:50:42,232 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:42,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:42,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1149644026, now seen corresponding path program 16 times [2024-06-04 15:50:42,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:42,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899081923] [2024-06-04 15:50:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:43,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:43,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899081923] [2024-06-04 15:50:43,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899081923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:43,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:43,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105460396] [2024-06-04 15:50:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:43,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:50:43,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 664 transitions, 10090 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:43,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:43,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:50:43,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:45,140 INFO L124 PetriNetUnfolderBase]: 4492/7182 cut-off events. [2024-06-04 15:50:45,140 INFO L125 PetriNetUnfolderBase]: For 1282782/1282782 co-relation queries the response was YES. [2024-06-04 15:50:45,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67839 conditions, 7182 events. 4492/7182 cut-off events. For 1282782/1282782 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 46738 event pairs, 983 based on Foata normal form. 4/7184 useless extension candidates. Maximal degree in co-relation 67620. Up to 6761 conditions per place. [2024-06-04 15:50:45,262 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 636 selfloop transitions, 47 changer transitions 0/688 dead transitions. [2024-06-04 15:50:45,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 688 transitions, 11850 flow [2024-06-04 15:50:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:50:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:50:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-04 15:50:45,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2024-06-04 15:50:45,263 INFO L175 Difference]: Start difference. First operand has 484 places, 664 transitions, 10090 flow. Second operand 11 states and 191 transitions. [2024-06-04 15:50:45,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 688 transitions, 11850 flow [2024-06-04 15:50:51,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 688 transitions, 11675 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 15:50:51,686 INFO L231 Difference]: Finished difference. Result has 491 places, 664 transitions, 10015 flow [2024-06-04 15:50:51,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9915, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10015, PETRI_PLACES=491, PETRI_TRANSITIONS=664} [2024-06-04 15:50:51,687 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 448 predicate places. [2024-06-04 15:50:51,687 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 664 transitions, 10015 flow [2024-06-04 15:50:51,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:51,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:50:51,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:50:51,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:50:51,688 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:50:51,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:50:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash 330169234, now seen corresponding path program 17 times [2024-06-04 15:50:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:50:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744296944] [2024-06-04 15:50:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:50:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:50:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:50:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:50:52,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:50:52,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744296944] [2024-06-04 15:50:52,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744296944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:50:52,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:50:52,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:50:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814723269] [2024-06-04 15:50:52,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:50:52,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:50:52,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:50:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:50:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:50:52,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:50:52,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 664 transitions, 10015 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:50:52,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:50:52,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:50:52,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:50:54,624 INFO L124 PetriNetUnfolderBase]: 4480/7166 cut-off events. [2024-06-04 15:50:54,624 INFO L125 PetriNetUnfolderBase]: For 1265650/1265650 co-relation queries the response was YES. [2024-06-04 15:50:54,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67234 conditions, 7166 events. 4480/7166 cut-off events. For 1265650/1265650 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 46699 event pairs, 975 based on Foata normal form. 4/7168 useless extension candidates. Maximal degree in co-relation 67014. Up to 6753 conditions per place. [2024-06-04 15:50:54,744 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 640 selfloop transitions, 47 changer transitions 0/692 dead transitions. [2024-06-04 15:50:54,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 692 transitions, 11567 flow [2024-06-04 15:50:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:50:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:50:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-04 15:50:54,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-04 15:50:54,745 INFO L175 Difference]: Start difference. First operand has 491 places, 664 transitions, 10015 flow. Second operand 13 states and 221 transitions. [2024-06-04 15:50:54,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 692 transitions, 11567 flow [2024-06-04 15:51:02,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 692 transitions, 11356 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-04 15:51:02,570 INFO L231 Difference]: Finished difference. Result has 496 places, 664 transitions, 9904 flow [2024-06-04 15:51:02,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9804, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9904, PETRI_PLACES=496, PETRI_TRANSITIONS=664} [2024-06-04 15:51:02,570 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 453 predicate places. [2024-06-04 15:51:02,570 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 664 transitions, 9904 flow [2024-06-04 15:51:02,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:02,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:02,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:02,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:51:02,571 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:02,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1135828721, now seen corresponding path program 12 times [2024-06-04 15:51:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250121201] [2024-06-04 15:51:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:03,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250121201] [2024-06-04 15:51:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250121201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:03,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:03,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984143281] [2024-06-04 15:51:03,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:03,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:03,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:51:03,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 664 transitions, 9904 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:03,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:03,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:51:03,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:05,711 INFO L124 PetriNetUnfolderBase]: 4482/7176 cut-off events. [2024-06-04 15:51:05,712 INFO L125 PetriNetUnfolderBase]: For 1256207/1256207 co-relation queries the response was YES. [2024-06-04 15:51:05,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67021 conditions, 7176 events. 4482/7176 cut-off events. For 1256207/1256207 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 46748 event pairs, 855 based on Foata normal form. 2/7172 useless extension candidates. Maximal degree in co-relation 66800. Up to 6714 conditions per place. [2024-06-04 15:51:05,835 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 589 selfloop transitions, 92 changer transitions 0/686 dead transitions. [2024-06-04 15:51:05,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 686 transitions, 11421 flow [2024-06-04 15:51:05,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:51:05,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:51:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-04 15:51:05,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2024-06-04 15:51:05,836 INFO L175 Difference]: Start difference. First operand has 496 places, 664 transitions, 9904 flow. Second operand 11 states and 191 transitions. [2024-06-04 15:51:05,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 686 transitions, 11421 flow [2024-06-04 15:51:13,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 686 transitions, 11243 flow, removed 27 selfloop flow, removed 13 redundant places. [2024-06-04 15:51:13,711 INFO L231 Difference]: Finished difference. Result has 494 places, 667 transitions, 10017 flow [2024-06-04 15:51:13,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9726, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10017, PETRI_PLACES=494, PETRI_TRANSITIONS=667} [2024-06-04 15:51:13,711 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 451 predicate places. [2024-06-04 15:51:13,711 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 667 transitions, 10017 flow [2024-06-04 15:51:13,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:13,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:13,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:51:13,712 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:13,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1135828876, now seen corresponding path program 18 times [2024-06-04 15:51:13,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:13,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643199191] [2024-06-04 15:51:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:13,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:14,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:14,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643199191] [2024-06-04 15:51:14,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643199191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:14,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:14,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:14,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753366558] [2024-06-04 15:51:14,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:14,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:14,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:14,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:51:14,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 667 transitions, 10017 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:14,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:14,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:51:14,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:16,549 INFO L124 PetriNetUnfolderBase]: 4470/7146 cut-off events. [2024-06-04 15:51:16,549 INFO L125 PetriNetUnfolderBase]: For 1256439/1256439 co-relation queries the response was YES. [2024-06-04 15:51:16,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66444 conditions, 7146 events. 4470/7146 cut-off events. For 1256439/1256439 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 46456 event pairs, 753 based on Foata normal form. 4/7144 useless extension candidates. Maximal degree in co-relation 66222. Up to 6298 conditions per place. [2024-06-04 15:51:16,667 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 543 selfloop transitions, 152 changer transitions 0/700 dead transitions. [2024-06-04 15:51:16,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 700 transitions, 11723 flow [2024-06-04 15:51:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:51:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:51:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-04 15:51:16,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44372294372294374 [2024-06-04 15:51:16,668 INFO L175 Difference]: Start difference. First operand has 494 places, 667 transitions, 10017 flow. Second operand 11 states and 205 transitions. [2024-06-04 15:51:16,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 700 transitions, 11723 flow [2024-06-04 15:51:23,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 700 transitions, 11434 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-04 15:51:23,757 INFO L231 Difference]: Finished difference. Result has 497 places, 667 transitions, 10039 flow [2024-06-04 15:51:23,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9728, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10039, PETRI_PLACES=497, PETRI_TRANSITIONS=667} [2024-06-04 15:51:23,757 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 454 predicate places. [2024-06-04 15:51:23,757 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 667 transitions, 10039 flow [2024-06-04 15:51:23,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:23,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:23,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:23,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:51:23,757 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:51:23,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash 952043768, now seen corresponding path program 19 times [2024-06-04 15:51:23,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:23,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161898735] [2024-06-04 15:51:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161898735] [2024-06-04 15:51:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161898735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983541695] [2024-06-04 15:51:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:24,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:24,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:24,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:51:24,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 667 transitions, 10039 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:24,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:24,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:51:24,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:26,731 INFO L124 PetriNetUnfolderBase]: 4490/7187 cut-off events. [2024-06-04 15:51:26,731 INFO L125 PetriNetUnfolderBase]: For 1274734/1274734 co-relation queries the response was YES. [2024-06-04 15:51:26,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67118 conditions, 7187 events. 4490/7187 cut-off events. For 1274734/1274734 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 46815 event pairs, 825 based on Foata normal form. 4/7189 useless extension candidates. Maximal degree in co-relation 66895. Up to 6762 conditions per place. [2024-06-04 15:51:26,869 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 641 selfloop transitions, 51 changer transitions 0/697 dead transitions. [2024-06-04 15:51:26,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 697 transitions, 11669 flow [2024-06-04 15:51:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:51:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:51:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-04 15:51:26,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-04 15:51:26,870 INFO L175 Difference]: Start difference. First operand has 497 places, 667 transitions, 10039 flow. Second operand 7 states and 143 transitions. [2024-06-04 15:51:26,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 697 transitions, 11669 flow [2024-06-04 15:51:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 697 transitions, 11310 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-04 15:51:33,594 INFO L231 Difference]: Finished difference. Result has 493 places, 670 transitions, 9899 flow [2024-06-04 15:51:33,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9899, PETRI_PLACES=493, PETRI_TRANSITIONS=670} [2024-06-04 15:51:33,594 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 450 predicate places. [2024-06-04 15:51:33,594 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 670 transitions, 9899 flow [2024-06-04 15:51:33,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:33,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:33,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:33,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:51:33,595 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)] === [2024-06-04 15:51:33,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:33,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1616799066, now seen corresponding path program 20 times [2024-06-04 15:51:33,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:33,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733076864] [2024-06-04 15:51:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:33,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:34,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:34,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733076864] [2024-06-04 15:51:34,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733076864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:34,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:34,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903768096] [2024-06-04 15:51:34,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:34,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:34,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:34,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:51:34,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 670 transitions, 9899 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:34,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:34,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:51:34,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:36,471 INFO L124 PetriNetUnfolderBase]: 4520/7223 cut-off events. [2024-06-04 15:51:36,471 INFO L125 PetriNetUnfolderBase]: For 1292427/1292427 co-relation queries the response was YES. [2024-06-04 15:51:36,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67295 conditions, 7223 events. 4520/7223 cut-off events. For 1292427/1292427 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 47064 event pairs, 1023 based on Foata normal form. 4/7225 useless extension candidates. Maximal degree in co-relation 67071. Up to 6858 conditions per place. [2024-06-04 15:51:36,604 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 657 selfloop transitions, 35 changer transitions 0/697 dead transitions. [2024-06-04 15:51:36,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 697 transitions, 11509 flow [2024-06-04 15:51:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:51:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:51:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 15:51:36,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-04 15:51:36,605 INFO L175 Difference]: Start difference. First operand has 493 places, 670 transitions, 9899 flow. Second operand 8 states and 150 transitions. [2024-06-04 15:51:36,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 697 transitions, 11509 flow [2024-06-04 15:51:44,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 697 transitions, 11333 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-04 15:51:44,051 INFO L231 Difference]: Finished difference. Result has 494 places, 676 transitions, 9931 flow [2024-06-04 15:51:44,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9723, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9931, PETRI_PLACES=494, PETRI_TRANSITIONS=676} [2024-06-04 15:51:44,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 451 predicate places. [2024-06-04 15:51:44,052 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 676 transitions, 9931 flow [2024-06-04 15:51:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:44,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:44,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:44,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:51:44,052 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)] === [2024-06-04 15:51:44,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash 310339441, now seen corresponding path program 13 times [2024-06-04 15:51:44,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:44,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009376528] [2024-06-04 15:51:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009376528] [2024-06-04 15:51:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009376528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:44,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:44,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789633261] [2024-06-04 15:51:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:45,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:51:45,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 676 transitions, 9931 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:45,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:45,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:51:45,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:47,102 INFO L124 PetriNetUnfolderBase]: 4522/7221 cut-off events. [2024-06-04 15:51:47,102 INFO L125 PetriNetUnfolderBase]: For 1282914/1282914 co-relation queries the response was YES. [2024-06-04 15:51:47,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67168 conditions, 7221 events. 4522/7221 cut-off events. For 1282914/1282914 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 47015 event pairs, 839 based on Foata normal form. 2/7217 useless extension candidates. Maximal degree in co-relation 66945. Up to 6598 conditions per place. [2024-06-04 15:51:47,218 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 556 selfloop transitions, 149 changer transitions 0/710 dead transitions. [2024-06-04 15:51:47,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 710 transitions, 11826 flow [2024-06-04 15:51:47,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:51:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:51:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-04 15:51:47,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-04 15:51:47,219 INFO L175 Difference]: Start difference. First operand has 494 places, 676 transitions, 9931 flow. Second operand 9 states and 178 transitions. [2024-06-04 15:51:47,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 710 transitions, 11826 flow [2024-06-04 15:51:54,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 710 transitions, 11608 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-06-04 15:51:54,476 INFO L231 Difference]: Finished difference. Result has 499 places, 679 transitions, 10193 flow [2024-06-04 15:51:54,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9713, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10193, PETRI_PLACES=499, PETRI_TRANSITIONS=679} [2024-06-04 15:51:54,476 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-04 15:51:54,476 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 679 transitions, 10193 flow [2024-06-04 15:51:54,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:54,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:51:54,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:51:54,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:51:54,477 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)] === [2024-06-04 15:51:54,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:51:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1735281252, now seen corresponding path program 21 times [2024-06-04 15:51:54,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:51:54,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704559117] [2024-06-04 15:51:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:51:54,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:51:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:51:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:51:55,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:51:55,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704559117] [2024-06-04 15:51:55,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704559117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:51:55,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:51:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:51:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618786463] [2024-06-04 15:51:55,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:51:55,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:51:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:51:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:51:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:51:55,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:51:55,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 679 transitions, 10193 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:51:55,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:51:55,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:51:55,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:51:57,350 INFO L124 PetriNetUnfolderBase]: 4584/7314 cut-off events. [2024-06-04 15:51:57,350 INFO L125 PetriNetUnfolderBase]: For 1358125/1358125 co-relation queries the response was YES. [2024-06-04 15:51:57,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69059 conditions, 7314 events. 4584/7314 cut-off events. For 1358125/1358125 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 47689 event pairs, 1015 based on Foata normal form. 4/7316 useless extension candidates. Maximal degree in co-relation 68834. Up to 6883 conditions per place. [2024-06-04 15:51:57,479 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 659 selfloop transitions, 44 changer transitions 0/708 dead transitions. [2024-06-04 15:51:57,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 708 transitions, 12210 flow [2024-06-04 15:51:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:51:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:51:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 15:51:57,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-04 15:51:57,480 INFO L175 Difference]: Start difference. First operand has 499 places, 679 transitions, 10193 flow. Second operand 8 states and 150 transitions. [2024-06-04 15:51:57,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 708 transitions, 12210 flow [2024-06-04 15:52:07,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 708 transitions, 11871 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 15:52:07,099 INFO L231 Difference]: Finished difference. Result has 500 places, 688 transitions, 10187 flow [2024-06-04 15:52:07,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9854, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10187, PETRI_PLACES=500, PETRI_TRANSITIONS=688} [2024-06-04 15:52:07,100 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 457 predicate places. [2024-06-04 15:52:07,100 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 688 transitions, 10187 flow [2024-06-04 15:52:07,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:07,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:07,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:07,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:52:07,100 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)] === [2024-06-04 15:52:07,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1616812086, now seen corresponding path program 22 times [2024-06-04 15:52:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800796370] [2024-06-04 15:52:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800796370] [2024-06-04 15:52:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800796370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:07,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:52:07,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844209681] [2024-06-04 15:52:07,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:52:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:52:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:52:07,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:52:07,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 688 transitions, 10187 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:07,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:07,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:52:07,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:09,869 INFO L124 PetriNetUnfolderBase]: 4604/7349 cut-off events. [2024-06-04 15:52:09,869 INFO L125 PetriNetUnfolderBase]: For 1376043/1376043 co-relation queries the response was YES. [2024-06-04 15:52:09,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69329 conditions, 7349 events. 4604/7349 cut-off events. For 1376043/1376043 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 47987 event pairs, 799 based on Foata normal form. 4/7347 useless extension candidates. Maximal degree in co-relation 69103. Up to 6411 conditions per place. [2024-06-04 15:52:09,995 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 563 selfloop transitions, 156 changer transitions 0/724 dead transitions. [2024-06-04 15:52:09,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 724 transitions, 12510 flow [2024-06-04 15:52:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:52:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:52:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 15:52:09,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-04 15:52:09,996 INFO L175 Difference]: Start difference. First operand has 500 places, 688 transitions, 10187 flow. Second operand 8 states and 163 transitions. [2024-06-04 15:52:09,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 724 transitions, 12510 flow [2024-06-04 15:52:18,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 724 transitions, 12372 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-04 15:52:18,149 INFO L231 Difference]: Finished difference. Result has 504 places, 691 transitions, 10461 flow [2024-06-04 15:52:18,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10049, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10461, PETRI_PLACES=504, PETRI_TRANSITIONS=691} [2024-06-04 15:52:18,149 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 461 predicate places. [2024-06-04 15:52:18,149 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 691 transitions, 10461 flow [2024-06-04 15:52:18,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:18,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:18,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:18,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:52:18,150 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)] === [2024-06-04 15:52:18,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:18,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1158697208, now seen corresponding path program 23 times [2024-06-04 15:52:18,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:18,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062681172] [2024-06-04 15:52:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:18,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:18,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:18,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062681172] [2024-06-04 15:52:18,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062681172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:18,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:18,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:52:18,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237853861] [2024-06-04 15:52:18,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:18,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:52:18,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:18,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:52:18,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:52:18,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:52:18,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 691 transitions, 10461 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:18,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:18,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:52:18,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:20,961 INFO L124 PetriNetUnfolderBase]: 4624/7390 cut-off events. [2024-06-04 15:52:20,962 INFO L125 PetriNetUnfolderBase]: For 1397891/1397891 co-relation queries the response was YES. [2024-06-04 15:52:21,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70082 conditions, 7390 events. 4624/7390 cut-off events. For 1397891/1397891 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48440 event pairs, 841 based on Foata normal form. 4/7392 useless extension candidates. Maximal degree in co-relation 69855. Up to 6768 conditions per place. [2024-06-04 15:52:21,087 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 622 selfloop transitions, 103 changer transitions 0/730 dead transitions. [2024-06-04 15:52:21,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 730 transitions, 12512 flow [2024-06-04 15:52:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:52:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:52:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-04 15:52:21,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 15:52:21,087 INFO L175 Difference]: Start difference. First operand has 504 places, 691 transitions, 10461 flow. Second operand 8 states and 168 transitions. [2024-06-04 15:52:21,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 730 transitions, 12512 flow [2024-06-04 15:52:29,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 730 transitions, 11671 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-04 15:52:29,554 INFO L231 Difference]: Finished difference. Result has 502 places, 694 transitions, 9950 flow [2024-06-04 15:52:29,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9638, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9950, PETRI_PLACES=502, PETRI_TRANSITIONS=694} [2024-06-04 15:52:29,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-04 15:52:29,555 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 694 transitions, 9950 flow [2024-06-04 15:52:29,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:29,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:29,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:29,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:52:29,555 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:52:29,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1939896851, now seen corresponding path program 2 times [2024-06-04 15:52:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863946959] [2024-06-04 15:52:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:30,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:30,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863946959] [2024-06-04 15:52:30,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863946959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:30,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:30,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:52:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607828225] [2024-06-04 15:52:30,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:30,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:52:30,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:30,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:52:30,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:52:30,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:52:30,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 694 transitions, 9950 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:30,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:30,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:52:30,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:32,353 INFO L124 PetriNetUnfolderBase]: 4634/7402 cut-off events. [2024-06-04 15:52:32,353 INFO L125 PetriNetUnfolderBase]: For 1392667/1392667 co-relation queries the response was YES. [2024-06-04 15:52:32,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68589 conditions, 7402 events. 4634/7402 cut-off events. For 1392667/1392667 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48395 event pairs, 866 based on Foata normal form. 2/7402 useless extension candidates. Maximal degree in co-relation 68365. Up to 6985 conditions per place. [2024-06-04 15:52:32,487 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 661 selfloop transitions, 51 changer transitions 0/717 dead transitions. [2024-06-04 15:52:32,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 717 transitions, 11566 flow [2024-06-04 15:52:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:52:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:52:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-04 15:52:32,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-04 15:52:32,488 INFO L175 Difference]: Start difference. First operand has 502 places, 694 transitions, 9950 flow. Second operand 6 states and 124 transitions. [2024-06-04 15:52:32,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 717 transitions, 11566 flow [2024-06-04 15:52:40,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 717 transitions, 11328 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-04 15:52:40,621 INFO L231 Difference]: Finished difference. Result has 502 places, 698 transitions, 9976 flow [2024-06-04 15:52:40,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9712, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9976, PETRI_PLACES=502, PETRI_TRANSITIONS=698} [2024-06-04 15:52:40,622 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-04 15:52:40,622 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 698 transitions, 9976 flow [2024-06-04 15:52:40,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:40,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:40,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:40,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:52:40,622 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:52:40,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash 315850776, now seen corresponding path program 24 times [2024-06-04 15:52:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342396754] [2024-06-04 15:52:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342396754] [2024-06-04 15:52:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342396754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:52:41,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336732458] [2024-06-04 15:52:41,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:41,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:52:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:52:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:52:41,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:52:41,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 698 transitions, 9976 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:41,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:41,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:52:41,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:43,852 INFO L124 PetriNetUnfolderBase]: 4622/7378 cut-off events. [2024-06-04 15:52:43,852 INFO L125 PetriNetUnfolderBase]: For 1375840/1375840 co-relation queries the response was YES. [2024-06-04 15:52:43,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67958 conditions, 7378 events. 4622/7378 cut-off events. For 1375840/1375840 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 48241 event pairs, 1019 based on Foata normal form. 4/7380 useless extension candidates. Maximal degree in co-relation 67734. Up to 6945 conditions per place. [2024-06-04 15:52:43,964 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 672 selfloop transitions, 45 changer transitions 0/722 dead transitions. [2024-06-04 15:52:43,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 722 transitions, 11576 flow [2024-06-04 15:52:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:52:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:52:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-04 15:52:43,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:52:43,965 INFO L175 Difference]: Start difference. First operand has 502 places, 698 transitions, 9976 flow. Second operand 10 states and 180 transitions. [2024-06-04 15:52:43,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 722 transitions, 11576 flow [2024-06-04 15:52:52,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 722 transitions, 11392 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-04 15:52:52,227 INFO L231 Difference]: Finished difference. Result has 508 places, 698 transitions, 9888 flow [2024-06-04 15:52:52,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9792, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9888, PETRI_PLACES=508, PETRI_TRANSITIONS=698} [2024-06-04 15:52:52,227 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 465 predicate places. [2024-06-04 15:52:52,227 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 698 transitions, 9888 flow [2024-06-04 15:52:52,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:52,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:52:52,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:52:52,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 15:52:52,228 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:52:52,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:52:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash -128214299, now seen corresponding path program 14 times [2024-06-04 15:52:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:52:52,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872292982] [2024-06-04 15:52:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:52:52,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:52:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:52:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:52:53,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:52:53,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872292982] [2024-06-04 15:52:53,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872292982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:52:53,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:52:53,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:52:53,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595798543] [2024-06-04 15:52:53,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:52:53,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:52:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:52:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:52:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:52:53,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:52:53,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 698 transitions, 9888 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:52:53,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:52:53,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:52:53,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:52:55,247 INFO L124 PetriNetUnfolderBase]: 4616/7383 cut-off events. [2024-06-04 15:52:55,248 INFO L125 PetriNetUnfolderBase]: For 1335490/1335490 co-relation queries the response was YES. [2024-06-04 15:52:55,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67363 conditions, 7383 events. 4616/7383 cut-off events. For 1335490/1335490 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48381 event pairs, 863 based on Foata normal form. 2/7379 useless extension candidates. Maximal degree in co-relation 67139. Up to 6820 conditions per place. [2024-06-04 15:52:55,382 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 618 selfloop transitions, 101 changer transitions 0/724 dead transitions. [2024-06-04 15:52:55,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 724 transitions, 11428 flow [2024-06-04 15:52:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:52:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:52:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 15:52:55,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-04 15:52:55,383 INFO L175 Difference]: Start difference. First operand has 508 places, 698 transitions, 9888 flow. Second operand 8 states and 158 transitions. [2024-06-04 15:52:55,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 724 transitions, 11428 flow [2024-06-04 15:53:04,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 724 transitions, 11320 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 15:53:04,082 INFO L231 Difference]: Finished difference. Result has 510 places, 698 transitions, 10004 flow [2024-06-04 15:53:04,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9780, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10004, PETRI_PLACES=510, PETRI_TRANSITIONS=698} [2024-06-04 15:53:04,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 467 predicate places. [2024-06-04 15:53:04,082 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 698 transitions, 10004 flow [2024-06-04 15:53:04,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:04,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:04,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:04,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 15:53:04,083 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:04,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 509790186, now seen corresponding path program 25 times [2024-06-04 15:53:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640096665] [2024-06-04 15:53:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:04,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:53:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:53:04,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:53:04,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640096665] [2024-06-04 15:53:04,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640096665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:53:04,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:53:04,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:53:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178872065] [2024-06-04 15:53:04,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:53:04,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:53:04,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:53:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:53:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:53:04,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:53:04,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 698 transitions, 10004 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:04,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:53:04,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:53:04,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:53:06,943 INFO L124 PetriNetUnfolderBase]: 4604/7366 cut-off events. [2024-06-04 15:53:06,944 INFO L125 PetriNetUnfolderBase]: For 1333383/1333383 co-relation queries the response was YES. [2024-06-04 15:53:07,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66902 conditions, 7366 events. 4604/7366 cut-off events. For 1333383/1333383 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 48325 event pairs, 837 based on Foata normal form. 4/7368 useless extension candidates. Maximal degree in co-relation 66677. Up to 6750 conditions per place. [2024-06-04 15:53:07,095 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 620 selfloop transitions, 108 changer transitions 0/733 dead transitions. [2024-06-04 15:53:07,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 733 transitions, 11686 flow [2024-06-04 15:53:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:53:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:53:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-04 15:53:07,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-04 15:53:07,096 INFO L175 Difference]: Start difference. First operand has 510 places, 698 transitions, 10004 flow. Second operand 8 states and 166 transitions. [2024-06-04 15:53:07,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 733 transitions, 11686 flow [2024-06-04 15:53:14,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 733 transitions, 11366 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-04 15:53:14,284 INFO L231 Difference]: Finished difference. Result has 510 places, 698 transitions, 9918 flow [2024-06-04 15:53:14,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9684, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9918, PETRI_PLACES=510, PETRI_TRANSITIONS=698} [2024-06-04 15:53:14,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 467 predicate places. [2024-06-04 15:53:14,284 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 698 transitions, 9918 flow [2024-06-04 15:53:14,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:14,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:14,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 15:53:14,285 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:14,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1415673165, now seen corresponding path program 3 times [2024-06-04 15:53:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:14,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390691439] [2024-06-04 15:53:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:53:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:53:15,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:53:15,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390691439] [2024-06-04 15:53:15,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390691439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:53:15,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:53:15,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:53:15,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584551905] [2024-06-04 15:53:15,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:53:15,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:53:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:53:15,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:53:15,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:53:15,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:53:15,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 698 transitions, 9918 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:15,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:53:15,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:53:15,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:53:17,464 INFO L124 PetriNetUnfolderBase]: 4614/7380 cut-off events. [2024-06-04 15:53:17,464 INFO L125 PetriNetUnfolderBase]: For 1298648/1298648 co-relation queries the response was YES. [2024-06-04 15:53:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66864 conditions, 7380 events. 4614/7380 cut-off events. For 1298648/1298648 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48359 event pairs, 836 based on Foata normal form. 2/7380 useless extension candidates. Maximal degree in co-relation 66640. Up to 6875 conditions per place. [2024-06-04 15:53:17,579 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 632 selfloop transitions, 89 changer transitions 0/726 dead transitions. [2024-06-04 15:53:17,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 726 transitions, 11598 flow [2024-06-04 15:53:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:53:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:53:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-04 15:53:17,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-04 15:53:17,580 INFO L175 Difference]: Start difference. First operand has 510 places, 698 transitions, 9918 flow. Second operand 7 states and 146 transitions. [2024-06-04 15:53:17,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 726 transitions, 11598 flow [2024-06-04 15:53:25,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 726 transitions, 11453 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:53:25,862 INFO L231 Difference]: Finished difference. Result has 511 places, 701 transitions, 10088 flow [2024-06-04 15:53:25,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9773, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10088, PETRI_PLACES=511, PETRI_TRANSITIONS=701} [2024-06-04 15:53:25,863 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 468 predicate places. [2024-06-04 15:53:25,863 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 701 transitions, 10088 flow [2024-06-04 15:53:25,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:25,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:25,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:25,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 15:53:25,863 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:25,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1195108144, now seen corresponding path program 26 times [2024-06-04 15:53:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665017491] [2024-06-04 15:53:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:25,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:53:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:53:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:53:26,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665017491] [2024-06-04 15:53:26,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665017491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:53:26,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:53:26,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:53:26,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559426783] [2024-06-04 15:53:26,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:53:26,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:53:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:53:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:53:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:53:26,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:53:26,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 701 transitions, 10088 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:26,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:53:26,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:53:26,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:53:28,731 INFO L124 PetriNetUnfolderBase]: 4634/7409 cut-off events. [2024-06-04 15:53:28,731 INFO L125 PetriNetUnfolderBase]: For 1323766/1323766 co-relation queries the response was YES. [2024-06-04 15:53:28,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67579 conditions, 7409 events. 4634/7409 cut-off events. For 1323766/1323766 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 48558 event pairs, 843 based on Foata normal form. 4/7407 useless extension candidates. Maximal degree in co-relation 67355. Up to 6447 conditions per place. [2024-06-04 15:53:28,859 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 580 selfloop transitions, 149 changer transitions 0/734 dead transitions. [2024-06-04 15:53:28,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 734 transitions, 12419 flow [2024-06-04 15:53:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:53:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:53:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-04 15:53:28,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-04 15:53:28,860 INFO L175 Difference]: Start difference. First operand has 511 places, 701 transitions, 10088 flow. Second operand 8 states and 160 transitions. [2024-06-04 15:53:28,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 734 transitions, 12419 flow [2024-06-04 15:53:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 734 transitions, 12215 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-04 15:53:36,125 INFO L231 Difference]: Finished difference. Result has 514 places, 704 transitions, 10275 flow [2024-06-04 15:53:36,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9888, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10275, PETRI_PLACES=514, PETRI_TRANSITIONS=704} [2024-06-04 15:53:36,126 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 471 predicate places. [2024-06-04 15:53:36,126 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 704 transitions, 10275 flow [2024-06-04 15:53:36,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:36,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:36,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:36,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 15:53:36,126 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:36,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1625086296, now seen corresponding path program 27 times [2024-06-04 15:53:36,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558494256] [2024-06-04 15:53:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:36,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:53:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:53:36,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:53:36,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558494256] [2024-06-04 15:53:36,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558494256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:53:36,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:53:36,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:53:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868711828] [2024-06-04 15:53:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:53:36,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:53:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:53:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:53:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:53:36,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:53:36,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 704 transitions, 10275 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:36,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:53:36,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:53:36,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:53:38,908 INFO L124 PetriNetUnfolderBase]: 4622/7399 cut-off events. [2024-06-04 15:53:38,908 INFO L125 PetriNetUnfolderBase]: For 1285949/1285949 co-relation queries the response was YES. [2024-06-04 15:53:39,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67044 conditions, 7399 events. 4622/7399 cut-off events. For 1285949/1285949 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 48603 event pairs, 829 based on Foata normal form. 4/7397 useless extension candidates. Maximal degree in co-relation 66820. Up to 6439 conditions per place. [2024-06-04 15:53:39,046 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 580 selfloop transitions, 151 changer transitions 0/736 dead transitions. [2024-06-04 15:53:39,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 736 transitions, 12255 flow [2024-06-04 15:53:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:53:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:53:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-04 15:53:39,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-04 15:53:39,047 INFO L175 Difference]: Start difference. First operand has 514 places, 704 transitions, 10275 flow. Second operand 8 states and 163 transitions. [2024-06-04 15:53:39,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 736 transitions, 12255 flow [2024-06-04 15:53:47,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 736 transitions, 11915 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-04 15:53:47,860 INFO L231 Difference]: Finished difference. Result has 518 places, 704 transitions, 10244 flow [2024-06-04 15:53:47,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9935, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10244, PETRI_PLACES=518, PETRI_TRANSITIONS=704} [2024-06-04 15:53:47,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 475 predicate places. [2024-06-04 15:53:47,860 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 704 transitions, 10244 flow [2024-06-04 15:53:47,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:47,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:47,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:47,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 15:53:47,861 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:47,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1029977561, now seen corresponding path program 4 times [2024-06-04 15:53:47,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:47,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116631751] [2024-06-04 15:53:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:47,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:53:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:53:48,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:53:48,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116631751] [2024-06-04 15:53:48,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116631751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:53:48,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:53:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:53:48,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461147500] [2024-06-04 15:53:48,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:53:48,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:53:48,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:53:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:53:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:53:48,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:53:48,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 704 transitions, 10244 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:48,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:53:48,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:53:48,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:53:50,938 INFO L124 PetriNetUnfolderBase]: 4624/7417 cut-off events. [2024-06-04 15:53:50,938 INFO L125 PetriNetUnfolderBase]: For 1271741/1271741 co-relation queries the response was YES. [2024-06-04 15:53:51,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66801 conditions, 7417 events. 4624/7417 cut-off events. For 1271741/1271741 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 48824 event pairs, 850 based on Foata normal form. 2/7417 useless extension candidates. Maximal degree in co-relation 66576. Up to 6985 conditions per place. [2024-06-04 15:53:51,064 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 670 selfloop transitions, 49 changer transitions 0/724 dead transitions. [2024-06-04 15:53:51,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 724 transitions, 11870 flow [2024-06-04 15:53:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:53:51,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:53:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 15:53:51,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-04 15:53:51,065 INFO L175 Difference]: Start difference. First operand has 518 places, 704 transitions, 10244 flow. Second operand 7 states and 134 transitions. [2024-06-04 15:53:51,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 724 transitions, 11870 flow [2024-06-04 15:53:59,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 724 transitions, 11561 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-04 15:53:59,051 INFO L231 Difference]: Finished difference. Result has 519 places, 707 transitions, 10163 flow [2024-06-04 15:53:59,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9935, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10163, PETRI_PLACES=519, PETRI_TRANSITIONS=707} [2024-06-04 15:53:59,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 476 predicate places. [2024-06-04 15:53:59,051 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 707 transitions, 10163 flow [2024-06-04 15:53:59,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:59,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:53:59,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:53:59,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 15:53:59,052 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:53:59,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:53:59,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1029969904, now seen corresponding path program 28 times [2024-06-04 15:53:59,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:53:59,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677500934] [2024-06-04 15:53:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:53:59,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:53:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:53:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:53:59,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:53:59,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677500934] [2024-06-04 15:53:59,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677500934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:53:59,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:53:59,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:53:59,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725768209] [2024-06-04 15:53:59,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:53:59,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:53:59,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:53:59,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:53:59,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:53:59,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:53:59,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 707 transitions, 10163 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:53:59,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:53:59,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:53:59,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:54:01,884 INFO L124 PetriNetUnfolderBase]: 4644/7437 cut-off events. [2024-06-04 15:54:01,884 INFO L125 PetriNetUnfolderBase]: For 1311720/1311720 co-relation queries the response was YES. [2024-06-04 15:54:01,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67218 conditions, 7437 events. 4644/7437 cut-off events. For 1311720/1311720 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 48875 event pairs, 851 based on Foata normal form. 4/7439 useless extension candidates. Maximal degree in co-relation 66992. Up to 6999 conditions per place. [2024-06-04 15:54:02,008 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 684 selfloop transitions, 41 changer transitions 0/730 dead transitions. [2024-06-04 15:54:02,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 730 transitions, 11824 flow [2024-06-04 15:54:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:54:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:54:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:54:02,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-04 15:54:02,009 INFO L175 Difference]: Start difference. First operand has 519 places, 707 transitions, 10163 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:54:02,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 730 transitions, 11824 flow [2024-06-04 15:54:10,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 730 transitions, 11626 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-04 15:54:10,197 INFO L231 Difference]: Finished difference. Result has 519 places, 710 transitions, 10154 flow [2024-06-04 15:54:10,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9965, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10154, PETRI_PLACES=519, PETRI_TRANSITIONS=710} [2024-06-04 15:54:10,197 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 476 predicate places. [2024-06-04 15:54:10,197 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 710 transitions, 10154 flow [2024-06-04 15:54:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:10,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:54:10,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:54:10,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 15:54:10,198 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:54:10,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:54:10,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1244186202, now seen corresponding path program 29 times [2024-06-04 15:54:10,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:54:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678980026] [2024-06-04 15:54:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:54:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:54:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:54:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:54:10,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:54:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678980026] [2024-06-04 15:54:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678980026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:54:10,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:54:10,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:54:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418683474] [2024-06-04 15:54:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:54:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:54:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:54:10,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:54:10,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:54:11,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:54:11,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 710 transitions, 10154 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:11,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:54:11,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:54:11,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:54:13,027 INFO L124 PetriNetUnfolderBase]: 4664/7475 cut-off events. [2024-06-04 15:54:13,027 INFO L125 PetriNetUnfolderBase]: For 1313889/1313889 co-relation queries the response was YES. [2024-06-04 15:54:13,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67445 conditions, 7475 events. 4664/7475 cut-off events. For 1313889/1313889 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 49243 event pairs, 853 based on Foata normal form. 4/7477 useless extension candidates. Maximal degree in co-relation 67220. Up to 6803 conditions per place. [2024-06-04 15:54:13,172 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 648 selfloop transitions, 87 changer transitions 0/740 dead transitions. [2024-06-04 15:54:13,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 740 transitions, 12183 flow [2024-06-04 15:54:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:54:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:54:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:54:13,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-04 15:54:13,173 INFO L175 Difference]: Start difference. First operand has 519 places, 710 transitions, 10154 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:54:13,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 740 transitions, 12183 flow [2024-06-04 15:54:21,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 740 transitions, 12037 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-04 15:54:21,744 INFO L231 Difference]: Finished difference. Result has 520 places, 713 transitions, 10291 flow [2024-06-04 15:54:21,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10010, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10291, PETRI_PLACES=520, PETRI_TRANSITIONS=713} [2024-06-04 15:54:21,745 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 477 predicate places. [2024-06-04 15:54:21,745 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 713 transitions, 10291 flow [2024-06-04 15:54:21,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:21,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:54:21,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:54:21,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 15:54:21,745 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:54:21,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:54:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash 73867566, now seen corresponding path program 30 times [2024-06-04 15:54:21,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:54:21,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31729988] [2024-06-04 15:54:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:54:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:54:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:54:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:54:22,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:54:22,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31729988] [2024-06-04 15:54:22,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31729988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:54:22,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:54:22,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:54:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685325881] [2024-06-04 15:54:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:54:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:54:22,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:54:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:54:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:54:22,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:54:22,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 713 transitions, 10291 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:22,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:54:22,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:54:22,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:54:24,867 INFO L124 PetriNetUnfolderBase]: 4652/7447 cut-off events. [2024-06-04 15:54:24,867 INFO L125 PetriNetUnfolderBase]: For 1272861/1272861 co-relation queries the response was YES. [2024-06-04 15:54:24,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66697 conditions, 7447 events. 4652/7447 cut-off events. For 1272861/1272861 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 48947 event pairs, 825 based on Foata normal form. 4/7449 useless extension candidates. Maximal degree in co-relation 66472. Up to 6795 conditions per place. [2024-06-04 15:54:24,978 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 645 selfloop transitions, 92 changer transitions 0/742 dead transitions. [2024-06-04 15:54:24,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 742 transitions, 11951 flow [2024-06-04 15:54:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:54:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:54:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 15:54:24,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-04 15:54:24,979 INFO L175 Difference]: Start difference. First operand has 520 places, 713 transitions, 10291 flow. Second operand 8 states and 159 transitions. [2024-06-04 15:54:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 742 transitions, 11951 flow [2024-06-04 15:54:33,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 742 transitions, 11578 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-04 15:54:33,310 INFO L231 Difference]: Finished difference. Result has 521 places, 713 transitions, 10114 flow [2024-06-04 15:54:33,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9918, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10114, PETRI_PLACES=521, PETRI_TRANSITIONS=713} [2024-06-04 15:54:33,310 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 478 predicate places. [2024-06-04 15:54:33,310 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 713 transitions, 10114 flow [2024-06-04 15:54:33,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:33,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:54:33,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:54:33,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 15:54:33,310 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:54:33,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:54:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash 558591501, now seen corresponding path program 15 times [2024-06-04 15:54:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:54:33,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108463698] [2024-06-04 15:54:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:54:33,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:54:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:54:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:54:34,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:54:34,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108463698] [2024-06-04 15:54:34,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108463698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:54:34,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:54:34,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:54:34,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400956702] [2024-06-04 15:54:34,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:54:34,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:54:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:54:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:54:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:54:34,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:54:34,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 713 transitions, 10114 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:34,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:54:34,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:54:34,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:54:36,269 INFO L124 PetriNetUnfolderBase]: 4661/7458 cut-off events. [2024-06-04 15:54:36,269 INFO L125 PetriNetUnfolderBase]: For 1247807/1247807 co-relation queries the response was YES. [2024-06-04 15:54:36,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66218 conditions, 7458 events. 4661/7458 cut-off events. For 1247807/1247807 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 49054 event pairs, 873 based on Foata normal form. 4/7460 useless extension candidates. Maximal degree in co-relation 65993. Up to 6878 conditions per place. [2024-06-04 15:54:36,397 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 639 selfloop transitions, 103 changer transitions 0/747 dead transitions. [2024-06-04 15:54:36,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 747 transitions, 11907 flow [2024-06-04 15:54:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:54:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:54:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 15:54:36,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-04 15:54:36,398 INFO L175 Difference]: Start difference. First operand has 521 places, 713 transitions, 10114 flow. Second operand 8 states and 158 transitions. [2024-06-04 15:54:36,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 747 transitions, 11907 flow [2024-06-04 15:54:44,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 747 transitions, 11478 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-04 15:54:44,750 INFO L231 Difference]: Finished difference. Result has 522 places, 722 transitions, 10246 flow [2024-06-04 15:54:44,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9685, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10246, PETRI_PLACES=522, PETRI_TRANSITIONS=722} [2024-06-04 15:54:44,751 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 479 predicate places. [2024-06-04 15:54:44,751 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 722 transitions, 10246 flow [2024-06-04 15:54:44,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:44,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:54:44,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:54:44,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 15:54:44,751 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:54:44,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:54:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1150136058, now seen corresponding path program 1 times [2024-06-04 15:54:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:54:44,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616445176] [2024-06-04 15:54:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:54:44,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:54:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:54:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:54:45,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:54:45,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616445176] [2024-06-04 15:54:45,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616445176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:54:45,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:54:45,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:54:45,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45426521] [2024-06-04 15:54:45,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:54:45,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:54:45,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:54:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:54:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:54:45,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:54:45,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 722 transitions, 10246 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:45,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:54:45,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:54:45,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:54:48,077 INFO L124 PetriNetUnfolderBase]: 4669/7456 cut-off events. [2024-06-04 15:54:48,078 INFO L125 PetriNetUnfolderBase]: For 1245803/1245803 co-relation queries the response was YES. [2024-06-04 15:54:48,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66406 conditions, 7456 events. 4669/7456 cut-off events. For 1245803/1245803 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 48949 event pairs, 990 based on Foata normal form. 2/7456 useless extension candidates. Maximal degree in co-relation 66179. Up to 7069 conditions per place. [2024-06-04 15:54:48,208 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 701 selfloop transitions, 41 changer transitions 0/747 dead transitions. [2024-06-04 15:54:48,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 747 transitions, 11928 flow [2024-06-04 15:54:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:54:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:54:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-04 15:54:48,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-04 15:54:48,213 INFO L175 Difference]: Start difference. First operand has 522 places, 722 transitions, 10246 flow. Second operand 11 states and 186 transitions. [2024-06-04 15:54:48,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 747 transitions, 11928 flow [2024-06-04 15:54:56,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 747 transitions, 11669 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-04 15:54:56,861 INFO L231 Difference]: Finished difference. Result has 526 places, 726 transitions, 10221 flow [2024-06-04 15:54:56,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9987, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10221, PETRI_PLACES=526, PETRI_TRANSITIONS=726} [2024-06-04 15:54:56,861 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 483 predicate places. [2024-06-04 15:54:56,861 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 726 transitions, 10221 flow [2024-06-04 15:54:56,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:56,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:54:56,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:54:56,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 15:54:56,861 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:54:56,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:54:56,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1159181800, now seen corresponding path program 2 times [2024-06-04 15:54:56,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:54:56,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69109949] [2024-06-04 15:54:56,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:54:56,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:54:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:54:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:54:57,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:54:57,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69109949] [2024-06-04 15:54:57,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69109949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:54:57,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:54:57,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:54:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068560191] [2024-06-04 15:54:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:54:57,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:54:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:54:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:54:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:54:57,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:54:57,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 726 transitions, 10221 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:54:57,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:54:57,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:54:57,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:54:59,768 INFO L124 PetriNetUnfolderBase]: 4677/7456 cut-off events. [2024-06-04 15:54:59,768 INFO L125 PetriNetUnfolderBase]: For 1184509/1184509 co-relation queries the response was YES. [2024-06-04 15:54:59,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65961 conditions, 7456 events. 4677/7456 cut-off events. For 1184509/1184509 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 48875 event pairs, 1032 based on Foata normal form. 2/7456 useless extension candidates. Maximal degree in co-relation 65736. Up to 7085 conditions per place. [2024-06-04 15:54:59,899 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 705 selfloop transitions, 36 changer transitions 0/746 dead transitions. [2024-06-04 15:54:59,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 746 transitions, 11837 flow [2024-06-04 15:54:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:54:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:54:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 15:54:59,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-04 15:54:59,900 INFO L175 Difference]: Start difference. First operand has 526 places, 726 transitions, 10221 flow. Second operand 7 states and 133 transitions. [2024-06-04 15:54:59,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 746 transitions, 11837 flow [2024-06-04 15:55:08,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 746 transitions, 11669 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-04 15:55:08,463 INFO L231 Difference]: Finished difference. Result has 526 places, 728 transitions, 10212 flow [2024-06-04 15:55:08,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10053, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10212, PETRI_PLACES=526, PETRI_TRANSITIONS=728} [2024-06-04 15:55:08,464 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 483 predicate places. [2024-06-04 15:55:08,464 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 728 transitions, 10212 flow [2024-06-04 15:55:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:55:08,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:55:08,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:55:08,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 15:55:08,464 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:55:08,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:55:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1159189240, now seen corresponding path program 3 times [2024-06-04 15:55:08,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:55:08,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595430375] [2024-06-04 15:55:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:55:08,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:55:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:55:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:55:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:55:09,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595430375] [2024-06-04 15:55:09,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595430375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:55:09,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:55:09,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:55:09,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406480382] [2024-06-04 15:55:09,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:55:09,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:55:09,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:55:09,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:55:09,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:55:09,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:55:09,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 728 transitions, 10212 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:55:09,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:55:09,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:55:09,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:55:11,502 INFO L124 PetriNetUnfolderBase]: 4685/7462 cut-off events. [2024-06-04 15:55:11,502 INFO L125 PetriNetUnfolderBase]: For 1202790/1202790 co-relation queries the response was YES. [2024-06-04 15:55:11,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66178 conditions, 7462 events. 4685/7462 cut-off events. For 1202790/1202790 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 48802 event pairs, 1036 based on Foata normal form. 2/7462 useless extension candidates. Maximal degree in co-relation 65951. Up to 7081 conditions per place. [2024-06-04 15:55:11,617 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 704 selfloop transitions, 36 changer transitions 0/745 dead transitions. [2024-06-04 15:55:11,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 745 transitions, 11816 flow [2024-06-04 15:55:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:55:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:55:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-04 15:55:11,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-04 15:55:11,618 INFO L175 Difference]: Start difference. First operand has 526 places, 728 transitions, 10212 flow. Second operand 7 states and 129 transitions. [2024-06-04 15:55:11,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 745 transitions, 11816 flow [2024-06-04 15:55:19,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 745 transitions, 11675 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-04 15:55:19,865 INFO L231 Difference]: Finished difference. Result has 528 places, 730 transitions, 10232 flow [2024-06-04 15:55:19,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10071, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10232, PETRI_PLACES=528, PETRI_TRANSITIONS=730} [2024-06-04 15:55:19,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 485 predicate places. [2024-06-04 15:55:19,866 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 730 transitions, 10232 flow [2024-06-04 15:55:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:55:19,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:55:19,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:55:19,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 15:55:19,866 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:55:19,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:55:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1415682310, now seen corresponding path program 4 times [2024-06-04 15:55:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:55:19,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784018700] [2024-06-04 15:55:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:55:19,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:55:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:55:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:55:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:55:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784018700] [2024-06-04 15:55:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784018700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:55:20,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:55:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:55:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239340370] [2024-06-04 15:55:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:55:20,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:55:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:55:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:55:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:55:20,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-04 15:55:20,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 730 transitions, 10232 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:55:20,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:55:20,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-04 15:55:20,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:55:22,870 INFO L124 PetriNetUnfolderBase]: 4693/7474 cut-off events. [2024-06-04 15:55:22,870 INFO L125 PetriNetUnfolderBase]: For 1219341/1219341 co-relation queries the response was YES. [2024-06-04 15:55:22,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66415 conditions, 7474 events. 4693/7474 cut-off events. For 1219341/1219341 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 48861 event pairs, 1037 based on Foata normal form. 2/7474 useless extension candidates. Maximal degree in co-relation 66187. Up to 7094 conditions per place. [2024-06-04 15:55:22,993 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 699 selfloop transitions, 46 changer transitions 0/750 dead transitions. [2024-06-04 15:55:22,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 750 transitions, 11864 flow [2024-06-04 15:55:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:55:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:55:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 15:55:22,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-04 15:55:22,994 INFO L175 Difference]: Start difference. First operand has 528 places, 730 transitions, 10232 flow. Second operand 7 states and 134 transitions. [2024-06-04 15:55:22,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 750 transitions, 11864 flow Killed by 15